#!/usr/bin/perl -w
#
# Nagios plugin to monitor vmware esx servers
#
# License: GPL
# Copyright (c) 2008 op5 AB
# Author: Kostyantyn Hushchyn <dev@op5.com>
# Contributor(s): Patrick Müller, Jeremy Martin, Eric Jonsson, stumpr, John Cavanaugh, Libor Klepac, maikmayers, Steffen Poulsen, Mark Elliott, simeg, sebastien.prudhomme, nitro
#
# For direct contact with any of the op5 developers send a mail to
# dev@op5.com
# Discussions are directed to the mailing list op5-users@op5.com,
# see http://lists.op5.com/mailman/listinfo/op5-users
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

use strict;
use warnings;
use vars qw($PROGNAME $VERSION $output $values $result $timeshift);
use Nagios::Plugin::Functions qw(%STATUS_TEXT);
use Nagios::Plugin;
use File::Basename;
use HTTP::Date;
my $perl_module_instructions="
Download the latest version of Perl Toolkit from VMware support page. 
In this example we use VMware-vSphere-SDK-for-Perl-4.0.0-161974.x86_64.tar.gz,
but the instructions should apply to newer versions as well.
  
Upload the file to your op5 Monitor server's /root dir and execute:

    cd /root
    tar xvzf VMware-vSphere-SDK-for-Perl-4.0.0-161974.x86_64.tar.gz
    cd vmware-vsphere-cli-distrib/
    ./vmware-install.pl
  
Follow the on screen instructions, described below:

  \"Creating a new vSphere CLI installer database using the tar4 format.

  Installing vSphere CLI.

  Installing version 161974 of vSphere CLI

  You must read and accept the vSphere CLI End User License Agreement to
  continue.
  Press enter to display it.\" 
  
    <ENTER>

  \"Read through the License Agreement\" 
  \"Do you accept? (yes/no) 
  
    yes


  \"The following Perl modules were found on the system but may be too old to work
  with VIPerl:
  
  Crypt::SSLeay
  Compress::Zlib\"
  
  \"In which directory do you want to install the executable files? [/usr/bin]\"

    <ENTER>

  \"Please wait while copying vSphere CLI files...

  The installation of vSphere CLI 4.0.0 build-161974 for Linux completed
  successfully. You can decide to remove this software from your system at any
  time by invoking the following command:
  \"/usr/bin/vmware-uninstall-vSphere-CLI.pl\".
  
  This installer has successfully installed both vSphere CLI and the vSphere SDK
  for Perl.
  Enjoy,
  
  --the VMware team\"

Note: \"Crypt::SSLeay\" and \"Compress::Zlib\" are not needed for check_esx3 to work.  
";


eval { 
	require VMware::VIRuntime
} or Nagios::Plugin::Functions::nagios_exit(UNKNOWN, "Missing perl module VMware::VIRuntime. Download and install \'VMware Infrastructure (VI) Perl Toolkit\', available at http://www.vmware.com/download/sdk/\n $perl_module_instructions");

$PROGNAME = basename($0);
$VERSION = '0.6.0';

my $np = Nagios::Plugin->new(
  usage => "Usage: %s -D <data_center> | -H <host_name> [ -N <vm_name> ]\n"
    . "    -u <user> -p <pass> | -f <authfile>\n"
    . "    -l <command> [ -s <subcommand> ] [ -T <timeshift> ]\n"
    . "    [ -x <black_list> ] [ -o <additional_options> ]\n"
    . "    [ -t <timeout> ] [ -w <warn_range> ] [ -c <crit_range> ]\n"
    . '    [ -V ] [ -h ]',
  version => $VERSION,
  plugin  => $PROGNAME,
  shortname => uc($PROGNAME),
  blurb => 'VMWare Infrastructure plugin',
  extra   => "Supported commands(^ means blank or not specified parameter) :\n"
    . "    Common options for VM, Host and DC :\n"
    . "        * cpu - shows cpu info\n"
    . "            + usage - CPU usage in percentage\n"
    . "            + usagemhz - CPU usage in MHz\n"
    . "            ^ all cpu info\n"
    . "        * mem - shows mem info\n"
    . "            + usage - mem usage in percentage\n"
    . "            + usagemb - mem usage in MB\n"
    . "            + swap - swap mem usage in MB\n"
    . "            + overhead - additional mem used by VM Server in MB\n"
    . "            + overall - overall mem used by VM Server in MB\n"
    . "            + memctl - mem used by VM memory control driver(vmmemctl) that controls ballooning\n"
    . "            ^ all mem info\n"
    . "        * net - shows net info\n"
    . "            + usage - overall network usage in KBps(Kilobytes per Second) \n"
    . "            + receive - receive in KBps(Kilobytes per Second) \n"
    . "            + send - send in KBps(Kilobytes per Second) \n"
    . "            ^ all net info\n"
    . "        * io - shows disk io info\n"
    . "            + read - read latency in ms (totalReadLatency.average)\n"
    . "            + write - write latency in ms (totalWriteLatency.average)\n"
    . "            ^ all disk io info\n"
    . "        * runtime - shows runtime info\n"
    . "            + status - overall host status (gray/green/red/yellow)\n"
    . "            + issues - all issues for the host\n"
    . "            ^ all runtime info\n"
    . "    VM specific :\n"
    . "        * cpu - shows cpu info\n"
    . "            + wait - CPU wait time in ms\n"
    . "            + ready - CPU ready time in ms\n"
    . "        * mem - shows mem info\n"
    . "            + swapin - swapin mem usage in MB\n"
    . "            + swapout - swapout mem usage in MB\n"
    . "            + active - active mem usage in MB\n"
    . "        * io - shows disk I/O info\n"
    . "            + usage - overall disk usage in MB/s\n"
    . "        * runtime - shows runtime info\n"
    . "            + con - connection state\n"
    . "            + cpu - allocated CPU in MHz\n"
    . "            + mem - allocated mem in MB\n"
    . "            + state - virtual machine state (UP, DOWN, SUSPENDED)\n"
    . "            + consoleconnections - console connections to VM\n"
    . "            + guest - guest OS status, needs VMware Tools\n"
    . "            + tools - VMWare Tools status\n"
    . "    Host specific :\n"
    . "        * net - shows net info\n"
    . "            + nic - makes sure all active NICs are plugged in\n"
    . "        * io - shows disk io info\n"
    . "            + aborted - aborted commands count\n"
    . "            + resets - bus resets count\n"
    . "            + kernel - kernel latency in ms\n"
    . "            + device - device latency in ms\n"
    . "            + queue - queue latency in ms\n"
    . "        * vmfs - shows Datastore info\n"
    . "            + (name) - free space info for datastore with name (name)\n"
    . "            ^ all datastore info\n"
    . "        * runtime - shows runtime info\n"
    . "            + con - connection state\n"
    . "            + health - checks cpu/storage/memory/sensor status\n"
    . "            + storagehealth - storage status check\n"
    . "            + temperature - temperature sensors\n"
    . "            + maintenance - shows whether host is in maintenance mode\n"
    . "            + list(vm) - list of VMWare machines and their statuses\n"
    . "        * service - shows Host service info\n"
    . "            + (names) - check the state of one or several services specified by (names), syntax for (names):<service1>,<service2>,...,<serviceN>\n"
    . "            ^ show all services\n"
    . "        * storage - shows Host storage info\n"
    . "            + adapter - list bus adapters\n"
    . "            + lun - list SCSI logical units\n"
    . "            + path - list logical unit paths\n"
    . "        * uptime - shows Host uptime\n"
    . "    DC specific :\n"
    . "        * io - shows disk io info\n"
    . "            + aborted - aborted commands count\n"
    . "            + resets - bus resets count\n"
    . "            + kernel - kernel latency in ms\n"
    . "            + device - device latency in ms\n"
    . "            + queue - queue latency in ms\n"
    . "        * vmfs - shows Datastore info\n"
    . "            + (name) - free space info for datastore with name (name)\n"
    . "            ^ all datastore info\n"
    . "        * runtime - shows runtime info\n"
    . "            + list(vm) - list of VMWare machines and their statuses\n"
    . "            + listhost - list of VMWare esx host servers and their statuses\n"
    . "            + tools - VMWare Tools status\n"
    . "        * recommendations - shows recommendations for cluster\n"
    . "            + (name) - recommendations for cluster with name (name)\n"
    . "            ^ all clusters recommendations\n"
    . "\n\nCopyright (c) 2008 op5",
  timeout => 30,
);

$np->add_arg(
  spec => 'host|H=s',
  help => "-H, --host=<hostname>\n"
    . '   ESX or ESXi hostname.',
  required => 0,
);

$np->add_arg(
  spec => 'cluster|C=s',
  help => "-C, --cluster=<clustername>\n"
    . '   ESX or ESXi clustername.',
  required => 0,
);

$np->add_arg(
  spec => 'datacenter|D=s',
  help => "-D, --datacenter=<DCname>\n"
    . '   Datacenter hostname.',
  required => 0,
);

$np->add_arg(
  spec => 'name|N=s',
  help => "-N, --name=<vmname>\n"
    . '   Virtual machine name.',
  required => 0,
);

$np->add_arg(
  spec => 'username|u=s',
  help => "-u, --username=<username>\n"
    . '   Username to connect with.',
  required => 0,
);

$np->add_arg(
  spec => 'password|p=s',
  help => "-p, --password=<password>\n"
    . '   Password to use with the username.',
  required => 0,
);

$np->add_arg(
  spec => 'authfile|f=s',
  help => "-f, --authfile=<path>\n"
    . "   Authentication file with login and password. File syntax :\n"
    . "   username=<login>\n"
    . '   password=<password>',
  required => 0,
);

$np->add_arg(
  spec => 'warning|w=s',
  help => "-w, --warning=THRESHOLD\n"
    . "   Warning threshold. See\n"
    . "   http://nagiosplug.sourceforge.net/developer-guidelines.html#THRESHOLDFORMAT\n"
    . '   for the threshold format.',
  required => 0,
);

$np->add_arg(
  spec => 'critical|c=s',
  help => "-c, --critical=THRESHOLD\n"
    . "   Critical threshold. See\n"
    . "   http://nagiosplug.sourceforge.net/developer-guidelines.html#THRESHOLDFORMAT\n"
    . '   for the threshold format.',
  required => 0,
);

$np->add_arg(
  spec => 'command|l=s',
  help => "-l, --command=COMMAND\n"
    . '   Specify command type (CPU, MEM, NET, IO, VMFS, RUNTIME, ...)',
  required => 1,
);

$np->add_arg(
  spec => 'subcommand|s=s',
  help => "-s, --subcommand=SUBCOMMAND\n"
    . '   Specify subcommand',
  required => 0,
);

$np->add_arg(
  spec => 'sessionfile|S=s',
  help => "-S, --sessionfile=SESSIONFILE\n"
    . '   Specify a filename to store sessions for faster authentication',
  required => 0,
);

$np->add_arg(
  spec => 'exclude|x=s',
  help => "-x, --exclude=<black_list>\n"
    . '   Specify black list',
  required => 0,
);

$np->add_arg(
  spec => 'options|o=s',
  help => "-o, --options=<additional_options> \n"
    . '   Specify additional command options',
  required => 0,
);

$np->add_arg(
  spec => 'timestamp|T=s',
  help => "-T, --timestamp=<timeshift> \n"
    . '   Timeshift in seconds that could fix issues with "Unknown error". Use values like 5, 10, 20, etc',
  required => 0,
);

$np->getopts;

$timeshift = $np->opts->timestamp;
my $host = $np->opts->host;
my $cluster = $np->opts->cluster;
my $datacenter = $np->opts->datacenter;
my $vmname = $np->opts->name;
my $username = $np->opts->username;
my $password = $np->opts->password;
my $authfile = $np->opts->authfile;
my $warning = $np->opts->warning;
my $critical = $np->opts->critical;
my $command = $np->opts->command;
my $subcommand = $np->opts->subcommand;
my $sessionfile = $np->opts->sessionfile;
my $blacklist = $np->opts->exclude;
my $addopts = $np->opts->options;
my $percw;
my $percc;
$output = "Unknown ERROR!";
$result = CRITICAL;

if (defined($subcommand))
{
	$subcommand = undef if ($subcommand eq '');
}

if (defined($critical))
{
	($percc, $critical) = check_percantage($critical);
	$critical = undef if ($critical eq '');
}

if (defined($warning))
{
	($percw, $warning) = check_percantage($warning);
	$warning = undef if ($warning eq '');
}

$np->set_thresholds(critical => $critical, warning => $warning);

eval
{
	die "Provide either Password/Username or Auth file or Session file\n" if ((!defined($password) || !defined($username) || defined($authfile)) && (defined($password) || defined($username) || !defined($authfile)) && (defined($password) || defined($username) || defined($authfile) || !defined($sessionfile)));
	die "Both threshold values must be the same units\n" if (($percw && !$percc && defined($critical)) || (!$percw && $percc && defined($warning)));
	if (defined($authfile))
	{
		open (AUTH_FILE, $authfile) || die "Unable to open auth file \"$authfile\"\n";
		while( <AUTH_FILE> ) {
			if(s/^[ \t]*username[ \t]*=//){
				s/^\s+//;s/\s+$//;
				$username = $_;
			}
			if(s/^[ \t]*password[ \t]*=//){
				s/^\s+//;s/\s+$//;
				$password = $_;
			}
		}
		die "Auth file must contain both username and password\n" if (!(defined($username) && defined($password)));
	}

	my $host_address;

	if (defined($datacenter))
	{
		$host_address = $datacenter;
	}
	elsif (defined($host))
	{
		$host_address = $host;
	}
	else
	{
		$np->nagios_exit(CRITICAL, "No Host or Datacenter specified");
	}

	$host_address .= ":443" if (index($host_address, ":") == -1);
	$host_address = "https://" . $host_address . "/sdk/webService";

	if (defined($sessionfile) and -e $sessionfile)
	{
		Opts::set_option("sessionfile", $sessionfile);
		eval {
			Util::connect($host_address, $username, $password);
			die "Connected host doesn't match reqested once\n" if (Opts::get_option("url") ne $host_address);
		};
		if ($@) {
			Opts::set_option("sessionfile", undef);
			Util::connect($host_address, $username, $password);
		}
	}
	else
	{
		Util::connect($host_address, $username, $password);
	}

	if (defined($sessionfile))
	{
		Vim::save_session(session_file => $sessionfile);
	}
	$command = uc($command);
	if (defined($vmname))
	{
		if ($command eq "CPU")
		{
			($result, $output) = vm_cpu_info($vmname, $np, local_uc($subcommand));
		}
		elsif ($command eq "MEM")
		{
			($result, $output) = vm_mem_info($vmname, $np, local_uc($subcommand));
		}
		elsif ($command eq "NET")
		{
			($result, $output) = vm_net_info($vmname, $np, local_uc($subcommand));
		}
		elsif ($command eq "IO")
		{
			($result, $output) = vm_disk_io_info($vmname, $np, local_uc($subcommand));
		}
		elsif ($command eq "RUNTIME")
		{
			($result, $output) = vm_runtime_info($vmname, $np, local_uc($subcommand));
		}
		else
		{
			$output = "Unknown HOST-VM command\n" . $np->opts->_help;
			$result = CRITICAL;
		}
	}
	elsif (defined($host))
	{
		my $esx;
		$esx = {name => $host} if (defined($datacenter));
		if ($command eq "CPU")
		{
			($result, $output) = host_cpu_info($esx, $np, local_uc($subcommand), $addopts);
		}
		elsif ($command eq "MEM")
		{
			($result, $output) = host_mem_info($esx, $np, local_uc($subcommand), $addopts);
		}
		elsif ($command eq "NET")
		{
			($result, $output) = host_net_info($esx, $np, local_uc($subcommand));
		}
		elsif ($command eq "IO")
		{
			($result, $output) = host_disk_io_info($esx, $np, local_uc($subcommand));
		}
		elsif ($command eq "VMFS")
		{
			($result, $output) = host_list_vm_volumes_info($esx, $np, $subcommand, $blacklist, $percc || $percw, $addopts);
		}
		elsif ($command eq "RUNTIME")
		{
			($result, $output) = host_runtime_info($esx, $np, local_uc($subcommand), $blacklist, $addopts);
		}
		elsif ($command eq "SERVICE")
		{
			($result, $output) = host_service_info($esx, $np, $subcommand);
		}
		elsif ($command eq "STORAGE")
		{
			($result, $output) = host_storage_info($esx, $np, local_uc($subcommand), $blacklist);
		}
		elsif ($command eq "UPTIME")
		{
			($result, $output) = host_uptime_info($esx, $np, $addopts);
		}
		else
		{
			$output = "Unknown HOST command\n" . $np->opts->_help;
			$result = CRITICAL;
		}
	}
	elsif (defined($cluster))
	{
		if ($command eq "CPU")
		{
			($result, $output) = cluster_cpu_info($cluster, $np, local_uc($subcommand));
		}
		elsif ($command eq "MEM")
		{
			($result, $output) = cluster_mem_info($cluster, $np, local_uc($subcommand), $addopts);
		}
		elsif ($command eq "CLUSTER")
		{
			($result, $output) = cluster_cluster_info($cluster, $np, local_uc($subcommand));
		}
		elsif ($command eq "VMFS")
		{
			($result, $output) = cluster_list_vm_volumes_info($cluster, $np, $subcommand, $blacklist, $percc || $percw, $addopts);
		}
		elsif ($command eq "RUNTIME")
		{
			($result, $output) = cluster_runtime_info($cluster, $np, local_uc($subcommand), $blacklist);
		}
		else
		{
			$output = "Unknown CLUSTER command\n" . $np->opts->_help;
			$result = CRITICAL;
		}
	}
	else
	{
		if ($command eq "RECOMMENDATIONS")
		{
			my $cluster_name;
			$cluster_name = {name => $subcommand} if (defined($subcommand));
			($result, $output) = return_cluster_DRS_recommendations($np, $cluster_name);
		}
		elsif ($command eq "CPU")
		{
			($result, $output) = dc_cpu_info($np, local_uc($subcommand), $addopts);
		}
		elsif ($command eq "MEM")
		{
			($result, $output) = dc_mem_info($np, local_uc($subcommand), $addopts);
		}
		elsif ($command eq "NET")
		{
			($result, $output) = dc_net_info($np, local_uc($subcommand));
		}
		elsif ($command eq "IO")
		{
			($result, $output) = dc_disk_io_info($np, local_uc($subcommand));
		}
		elsif ($command eq "VMFS")
		{
			($result, $output) = dc_list_vm_volumes_info($np, $subcommand, $blacklist, $percc || $percw, $addopts);
		}
		elsif ($command eq "RUNTIME")
		{
			($result, $output) = dc_runtime_info($np, local_uc($subcommand), $blacklist);
		}
		else
		{
			$output = "Unknown HOST command\n" . $np->opts->_help;
			$result = CRITICAL;
		}		
	}
};
if ($@)
{
	if (uc(ref($@)) eq "HASH")
	{
		$output = $@->{msg};
		$result = $@->{code};
	}
	else
	{
		$output = $@ . "";
		$result = CRITICAL;
	}
}

Util::disconnect();
$np->nagios_exit($result, $output);

#######################################################################################################################################################################

sub get_key_metrices {
	my ($perfmgr_view, $group, @names) = @_;

	my $perfCounterInfo = $perfmgr_view->perfCounter;
	my @counters;

	die "Insufficient rights to access perfcounters\n" if (!defined($perfCounterInfo));

	foreach (@$perfCounterInfo) {
		if ($_->groupInfo->key eq $group) {
			my $cur_name = $_->nameInfo->key . "." . $_->rollupType->val;
			foreach my $index (0..@names-1)
			{

				if ($names[$index] =~ /$cur_name/)
				{
					$names[$index] =~ /(\w+).(\w+):*(.*)/;
					$counters[$index] = PerfMetricId->new(counterId => $_->key, instance => $3);
				}
			}
		}
	}

	return \@counters;
}

sub generic_performance_values {
	my ($views, $timestamp, $group, @list) = @_;
	my $counter = 0;
	my @values = ();
	my $amount = @list;
	my $perfMgr = Vim::get_view(mo_ref => Vim::get_service_content()->perfManager, properties => [ 'perfCounter' ]);
	my $metrices = get_key_metrices($perfMgr, $group, @list);

	my @perf_query_spec = ();
	if (defined($timestamp)) {
		push(@perf_query_spec, PerfQuerySpec->new(entity => $_, metricId => $metrices, format => 'csv', intervalId => 20, maxSample => 1, startTime => $timestamp)) foreach (@$views);
	} else {
		push(@perf_query_spec, PerfQuerySpec->new(entity => $_, metricId => $metrices, format => 'csv', intervalId => 20, maxSample => 1)) foreach (@$views);
	}
	my $perf_data = $perfMgr->QueryPerf(querySpec => \@perf_query_spec);
	$amount *= @$perf_data;

	while (@$perf_data)
	{
		my $unsorted = shift(@$perf_data)->value;
		my @host_values = ();

		foreach my $id (@$unsorted)
		{
			foreach my $index (0..@$metrices-1)
			{
				if ($id->id->counterId == $$metrices[$index]->counterId)
				{
					$counter++ if (!defined($host_values[$index]));
					$host_values[$index] = $id;
				}
			}
		}
		push(@values, \@host_values);
	}
	return undef if ($counter != $amount || $counter == 0);
	return \@values;
}

sub return_host_performance_values {
	my $values;
	my $host_name = shift(@_);
	my $host_view = Vim::find_entity_views(view_type => 'HostSystem', filter => $host_name, properties => ($timeshift ? [ 'name', 'runtime.inMaintenanceMode', 'configManager.dateTimeSystem' ] : [ 'name', 'runtime.inMaintenanceMode']) ); # Added properties named argument.
	die "Runtime error\n" if (!defined($host_view));
	die "Host \"" . $$host_name{"name"} . "\" does not exist\n" if (!@$host_view);
	die {msg => ("NOTICE: \"" . $$host_view[0]->name . "\" is in maintenance mode, check skipped\n"), code => OK} if (uc($$host_view[0]->get_property('runtime.inMaintenanceMode')) eq "TRUE");
	# Timestamp is required for some Hosts in vCenter(Datacenter), this could fix 'Unknown error' type of issues
	my $timestamp = undef;
	if (defined($timeshift)) {
		$timestamp = Vim::get_view(mo_ref => $$host_view[0]->get_property('configManager.dateTimeSystem'))->QueryDateTime();
		my $unixtime = str2time($timestamp);
		my($sec,$min,$hour,$mday,$mon,$year) = gmtime($unixtime - $timeshift);
		$timestamp = sprintf("%04d-%02d-%02dT%02d:%02d:%02dZ", $year+1900, $mon+1, $mday, $hour, $min, $sec);
	}
	$values = generic_performance_values($host_view, $timestamp, @_);

	return undef if ($@);
	return ($host_view, $values);
}

sub return_host_vmware_performance_values {
	my $values;
	my $vmname = shift(@_);
	my $vm_view = Vim::find_entity_views(view_type => 'VirtualMachine', filter => {name => "$vmname"}, properties => [ 'name', 'runtime.powerState' ]);
	die "Runtime error\n" if (!defined($vm_view));
	die "VMware machine \"" . $vmname . "\" does not exist\n" if (!@$vm_view);
	die "VMware machine \"" . $vmname . "\" is not running. Current state is \"" . $$vm_view[0]->get_property('runtime.powerState')->val . "\"\n" if ($$vm_view[0]->get_property('runtime.powerState')->val ne "poweredOn");
	$values = generic_performance_values($vm_view, undef, @_);

	return $@ if ($@);
	return ($vm_view, $values);
}

sub return_dc_performance_values {
	my $values;
	my $host_views = Vim::find_entity_views(view_type => 'HostSystem', properties => [ 'name' ]);
	die "Runtime error\n" if (!defined($host_views));
	die "Datacenter does not contain any hosts\n" if (!@$host_views);
	$values = generic_performance_values($host_views, undef, @_);

	return undef if ($@);
	return ($host_views, $values);
}

sub return_cluster_performance_values {
	my $values;
	my $cluster_name = shift(@_);
	my $cluster_view = Vim::find_entity_views(view_type => 'ClusterComputeResource', filter => { name => "$cluster_name" }, properties => [ 'name' ]); # Added properties named argument.
	die "Runtime error\n" if (!defined($cluster_view));
	die "Cluster \"" . $cluster_name . "\" does not exist\n" if (!@$cluster_view);
	$values = generic_performance_values($cluster_view, undef, @_);

	return undef if ($@);
	return $values;
}

# Temporary solution to overcome zeros in network output
sub return_host_temporary_vc_4_1_network_performance_values {
	my @values;
	my ($host_name, @list) = @_;

	my $host_view = Vim::find_entity_views(view_type => 'HostSystem', filter => $host_name, properties => [ 'name', 'runtime.inMaintenanceMode', 'summary.config.product.version', 'configManager.dateTimeSystem' ]); # Added properties named argument.
	die "Runtime error\n" if (!defined($host_view));
	die "Host \"" . $$host_name{"name"} . "\" does not exist\n" if (!@$host_view);
	die {msg => ("NOTICE: \"" . $$host_view[0]->name . "\" is in maintenance mode, check skipped\n"), code => OK} if (uc($$host_view[0]->get_property('runtime.inMaintenanceMode')) eq "TRUE");
	my $software_version = $$host_view[0]->get_property('summary.config.product.version');
	return undef if (substr($software_version, 0, 4) ne '4.1.');

	my $timestamp = undef;
	if (defined($timeshift)) {
		$timestamp = Vim::get_view(mo_ref => $$host_view[0]->get_property('configManager.dateTimeSystem'))->QueryDateTime();
		my $unixtime = str2time($timestamp);
		my($sec,$min,$hour,$mday,$mon,$year) = gmtime($unixtime - $timeshift);
		$timestamp = sprintf("%04d-%02d-%02dT%02d:%02d:%02dZ", $year+1900, $mon+1, $mday, $hour, $min, $sec);
	}

	my $perfMgr = Vim::get_view(mo_ref => Vim::get_service_content()->perfManager, properties => [ 'perfCounter' ]);
	my $metrices = get_key_metrices($perfMgr, 'net', @list);

	my $amount = @list;
	my @perf_query_spec = ();

	if (defined($timestamp)) {
		push(@perf_query_spec, PerfQuerySpec->new(entity => $_, metricId => $metrices, format => 'csv', intervalId => 20, maxSample => 1, startTime => $timestamp)) foreach (@$host_view);
	} else {
		push(@perf_query_spec, PerfQuerySpec->new(entity => $_, metricId => $metrices, format => 'csv', intervalId => 20, maxSample => 1)) foreach (@$host_view);
	}
	my $perf_data = $perfMgr->QueryPerf(querySpec => \@perf_query_spec);
	$amount *= @$perf_data;

	my $counter = 0;
	while (@$perf_data)
	{
		my $unsorted = shift(@$perf_data)->value;
		my @host_values = ();

		foreach my $id (@$unsorted)
		{
			foreach my $index (0..@$metrices-1)
			{
				if ($id->id->counterId == $$metrices[$index]->counterId)
				{
					if (!defined($host_values[$index]))
					{
						$counter++;
						$host_values[$index] = bless({ 'value' => '0' }, "PerfMetricSeriesCSV");
					}
					$host_values[$index]{"value"} += convert_number($id->value) if ($id->id->instance ne '');
				}
			}
		}
		push(@values, \@host_values);
	}

	return undef if ($counter != $amount || $counter == 0 || $@);
	return ($host_view, \@values);
}
# Remove as soon as possible

sub local_uc
{
	my ($val) = shift(@_);
	return defined($val)?uc($val):undef;
}

sub simplify_number
{
	my ($number, $cnt) = @_;
	$cnt = 2 if (!defined($cnt));
	return sprintf("%.${cnt}f", "$number");
}

sub convert_number
{
	my @vals = split(/,/, shift(@_));
	return shift(@vals) if ($vals[-1] < 0);
	return pop(@vals);
}

sub check_percantage
{
	my ($number) = shift(@_);
	my $perc = $number =~ s/\%//;
	return ($perc, $number);
}

sub check_health_state
{
	my ($state) = shift(@_);
	my $res = UNKNOWN;

	if (uc($state) eq "GREEN") {
		$res = OK
	} elsif (uc($state) eq "YELLOW") {
		$res = WARNING;
	} elsif (uc($state) eq "RED") {
		$res = CRITICAL;
	}
	
	return $res;
}

sub format_issue {
	my ($issue) = shift(@_);

	my $output = '';

	if (defined($issue->datacenter))
	{
		$output .= 'Datacenter "' . $issue->datacenter->name . '", ';
	}
	if (defined($issue->host))
	{
		$output .= 'Host "' . $issue->host->name . '", ';
	}
	if (defined($issue->vm))
	{
		$output .= 'VM "' . $issue->vm->name . '", ';
	}
	if (defined($issue->computeResource))
	{
		$output .= 'Compute Resource "' . $issue->computeResource->name . '", ';
	}
	if (exists($issue->{dvs}) && defined($issue->dvs))
	{
		# Since vSphere API 4.0
		$output .= 'Virtual Switch "' . $issue->dvs->name . '", ';
	}
	if (exists($issue->{ds}) && defined($issue->ds))
	{
		# Since vSphere API 4.0
		$output .= 'Datastore "' . $issue->ds->name . '", ';
	}
	if (exists($issue->{net}) && defined($issue->net))
	{
		# Since vSphere API 4.0
		$output .= 'Network "' . $issue->net->name . '" ';
	}

	$output =~ s/, $/ /;
	$output .= ": " . $issue->fullFormattedMessage;
	$output .= "(caused by " . $issue->userName . ")" if ($issue->userName ne "");

	return $output;
}

sub datastore_volumes_info
{
	my ($datastore, $np, $subcommand, $blacklist, $perc, $addopts) = @_;

	my $res = OK;
	my $output = '';

	my $usedflag;
	my $briefflag;
	my $regexpflag;
	my $blackregexpflag;
	$usedflag = $addopts =~ m/(^|\s|\t|,)\Qused\E($|\s|\t|,)/ if (defined($addopts));
	$briefflag = $addopts =~ m/(^|\s|\t|,)\Qbrief\E($|\s|\t|,)/ if (defined($addopts));
	$regexpflag = $addopts =~ m/(^|\s|\t|,)\Qregexp\E($|\s|\t|,)/ if (defined($addopts));
	$blackregexpflag = $addopts =~ m/(^|\s|\t|,)\Qblacklistregexp\E($|\s|\t|,)/ if (defined($addopts));

	die "Blacklist is supported only in generic check or regexp subcheck\n" if (defined($subcommand) && defined($blacklist) && !defined($regexpflag));

	if (defined($regexpflag) && defined($subcommand))
	{
		eval
		{
			qr{$subcommand};
		};
		if ($@)
		{
			$@ =~ s/ at.*line.*\.//;
			die $@;
		}
	}

	my $state;
	foreach my $ref_store (@{$datastore})
	{
		my $store = Vim::get_view(mo_ref => $ref_store, properties => ['summary', 'info']);
		my $name = $store->summary->name;
		if (!defined($subcommand) || ($name eq $subcommand) || (defined($regexpflag) && $name =~ /$subcommand/))
		{
			if (defined($blacklist))
			{
				next if ($blackregexpflag?$name =~ /$blacklist/:$blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/);
			}

			if ($store->summary->accessible)
			{
				my $value1 = simplify_number(convert_number($store->summary->freeSpace) / 1024 / 1024);
				my $value2 = convert_number($store->summary->capacity);
				$value2 = simplify_number(convert_number($store->info->freeSpace) / $value2 * 100) if ($value2 > 0);

				if ($usedflag)
				{
					$value1 = simplify_number(convert_number($store->summary->capacity) / 1024 / 1024) - $value1;
					$value2 = 100 - $value2;
				}

				$state = $np->check_threshold(check => $perc?$value2:$value1);
				$res = Nagios::Plugin::Functions::max_state($res, $state);
				$np->add_perfdata(label => $name, value => $perc?$value2:$value1, uom => $perc?'%':'MB', threshold => $np->threshold);
				$output .= "'$name'" . ($usedflag ? "(used)" : "(free)") . "=". $value1 . " MB (" . $value2 . "%), " if (!$briefflag || $state != OK);
			}
			else
			{
				$res = CRITICAL;
				$output .= "'$name' is not accessible, ";
			}
			last if (!$regexpflag && defined($subcommand) && ($name eq $subcommand));
			$blacklist .= $blackregexpflag?"|^$name\$":",$name";
		}
	}

	if ($output)
	{
		chop($output);
		chop($output);
		$output = "Storages : " . $output;
	}
	else
	{
		if ($briefflag)
		{
			$output = "There are no alerts";
		}
		else
		{
			$res = WARNING;
			$output = defined($subcommand)?$regexpflag? "No matching volumes for regexp \"$subcommand\" found":"No volume named \"$subcommand\" found":"There are no volumes";
		}
	}

	return ($res, $output);
}

#=====================================================================| HOST |============================================================================#

sub host_cpu_info
{
	my ($host, $np, $subcommand, $addopts) = @_;

	my $res = CRITICAL;
	my $output = 'HOST CPU Unknown error';

	my $quickStats;
	$quickStats = $addopts =~ m/(^|\s|\t|,)\Qquickstats\E($|\s|\t|,)/ if (defined($addopts));

	if (defined($subcommand))
	{
		if ($subcommand eq "USAGE")
		{
			my $value;
			if (defined($quickStats))
			{
				my $host_view = Vim::find_entity_view(view_type => 'HostSystem', filter => $host, properties => ['name', 'runtime.inMaintenanceMode', 'summary.hardware', 'summary.quickStats']);
				die "Host \"" . $$host{"name"} . "\" does not exist\n" if (!defined($host_view));
				die {msg => ("NOTICE: \"" . $host_view->name . "\" is in maintenance mode, check skipped\n"), code => OK} if (uc($host_view->get_property('runtime.inMaintenanceMode')) eq "TRUE");
				$values = $host_view->get_property('summary.quickStats');
				my $hardinfo = $host_view->get_property('summary.hardware');
				$value = simplify_number($values->overallCpuUsage / ($hardinfo->numCpuCores * $hardinfo->cpuMhz) * 100) if exists($values->{overallCpuUsage}) && defined($hardinfo);
			}
			else
			{
				$values = return_host_performance_values($host, 'cpu', ('usage.average'));
				$value = simplify_number(convert_number($$values[0][0]->value) * 0.01) if (defined($values));
			}
			if (defined($value))
			{
				$np->add_perfdata(label => "cpu_usage", value => $value, uom => '%', threshold => $np->threshold);
				$output = "cpu usage=" . $value . " %"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "USAGEMHZ")
		{
			my $value;
			if (defined($quickStats))
			{
				my $host_view = Vim::find_entity_view(view_type => 'HostSystem', filter => $host, properties => ['name', 'runtime.inMaintenanceMode', 'summary.quickStats']);
				die "Host \"" . $$host{"name"} . "\" does not exist\n" if (!defined($host_view));
				die {msg => ("NOTICE: \"" . $host_view->name . "\" is in maintenance mode, check skipped\n"), code => OK} if (uc($host_view->get_property('runtime.inMaintenanceMode')) eq "TRUE");
				$values = $host_view->get_property('summary.quickStats');
				$value = simplify_number($values->overallCpuUsage) if exists($values->{overallCpuUsage});
			}
			else
			{
				$values = return_host_performance_values($host, 'cpu', ('usagemhz.average'));
				$value = simplify_number(convert_number($$values[0][0]->value)) if (defined($values));
			}
			if (defined($value))
			{
				$np->add_perfdata(label => "cpu_usagemhz", value => $value, uom => 'Mhz', threshold => $np->threshold);
				$output = "cpu usagemhz=" . $value . " MHz";
				$res = $np->check_threshold(check => $value);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "HOST CPU - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		my $value1;
		my $value2;
		if (defined($quickStats))
		{
			my $host_view = Vim::find_entity_view(view_type => 'HostSystem', filter => $host, properties => ['name', 'runtime.inMaintenanceMode', 'summary.hardware', 'summary.quickStats']);
			die "Host \"" . $$host{"name"} . "\" does not exist\n" if (!defined($host_view));
			die {msg => ("NOTICE: \"" . $host_view->name . "\" is in maintenance mode, check skipped\n"), code => OK} if (uc($host_view->get_property('runtime.inMaintenanceMode')) eq "TRUE");
			$values = $host_view->get_property('summary.quickStats');
			my $hardinfo = $host_view->get_property('summary.hardware');
			if (exists($values->{overallCpuUsage}) && defined($hardinfo))
			{
				$value1 = simplify_number($values->overallCpuUsage);
				$value2 = simplify_number($values->overallCpuUsage / ($hardinfo->numCpuCores * $hardinfo->cpuMhz) * 100);
			}
		}
		else
		{
			$values = return_host_performance_values($host, 'cpu', ('usagemhz.average', 'usage.average'));
			if ($values) {
				$value1 = simplify_number(convert_number($$values[0][0]->value));
				$value2 = simplify_number(convert_number($$values[0][1]->value) * 0.01);
			}
		}
		if (defined($value1) && defined($value2))
		{
			$np->add_perfdata(label => "cpu_usagemhz", value => $value1, uom => 'Mhz', threshold => $np->threshold);
			$np->add_perfdata(label => "cpu_usage", value => $value2, uom => '%', threshold => $np->threshold);
			$res = OK;
			$output = "cpu usage=" . $value1 . " MHz (" . $value2 . "%)";
		}
	}

	return ($res, $output);
}

sub host_mem_info
{
	my ($host, $np, $subcommand, $addopts) = @_;

	my $res = CRITICAL;
	my $output = 'HOST MEM Unknown error';

	my $quickStats;
	my $outputlist;
	$quickStats = $addopts =~ m/(^|\s|\t|,)\Qquickstats\E($|\s|\t|,)/ if (defined($addopts));
	$outputlist = $addopts =~ m/(^|\s|\t|,)\Qlistvm\E($|\s|\t|,)/ if (defined($addopts));

	if (defined($subcommand))
	{
		if ($subcommand eq "USAGE")
		{
			my $value;
			if (defined($quickStats))
			{
				my $host_view = Vim::find_entity_view(view_type => 'HostSystem', filter => $host, properties => ['name', 'runtime.inMaintenanceMode', 'summary.hardware', 'summary.quickStats']);
				die "Host \"" . $$host{"name"} . "\" does not exist\n" if (!defined($host_view));
				die {msg => ("NOTICE: \"" . $host_view->name . "\" is in maintenance mode, check skipped\n"), code => OK} if (uc($host_view->get_property('runtime.inMaintenanceMode')) eq "TRUE");
				$values = $host_view->get_property('summary.quickStats');
				my $hardinfo = $host_view->get_property('summary.hardware');
				$value = simplify_number($values->overallMemoryUsage / ($hardinfo->memorySize / 1024 / 1024) * 100) if exists($values->{overallMemoryUsage}) && defined($hardinfo);
			}
			else
			{
				$values = return_host_performance_values($host, 'mem', ('usage.average'));
				$value = simplify_number(convert_number($$values[0][0]->value) * 0.01) if (defined($values));
			}
			if (defined($value))
			{
				$np->add_perfdata(label => "mem_usage", value => $value, uom => '%', threshold => $np->threshold);
				$output = "mem usage=" . $value . " %"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "USAGEMB")
		{
			my $value;
			if (defined($quickStats))
			{
				my $host_view = Vim::find_entity_view(view_type => 'HostSystem', filter => $host, properties => ['name', 'runtime.inMaintenanceMode', 'summary.quickStats']);
				die "Host \"" . $$host{"name"} . "\" does not exist\n" if (!defined($host_view));
				die {msg => ("NOTICE: \"" . $host_view->name . "\" is in maintenance mode, check skipped\n"), code => OK} if (uc($host_view->get_property('runtime.inMaintenanceMode')) eq "TRUE");
				$values = $host_view->get_property('summary.quickStats');
				$value = simplify_number($values->overallMemoryUsage) if exists($values->{overallMemoryUsage});
			}
			else
			{
				$values = return_host_performance_values($host, 'mem', ('consumed.average'));
				$value = simplify_number(convert_number($$values[0][0]->value) / 1024) if (defined($values));
			}
			if (defined($value))
			{
				$np->add_perfdata(label => "mem_usagemb", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "mem usage=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "SWAP")
		{
			my $host_view;
			($host_view, $values) = return_host_performance_values($host, 'mem', ('swapused.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "mem_swap", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "swap usage=" . $value . " MB: ";
				$res = $np->check_threshold(check => $value);
				if ($res != OK && $outputlist)
				{
					my $vm_views = Vim::find_entity_views(view_type => 'VirtualMachine', begin_entity => $$host_view[0], properties => ['name', 'runtime.powerState']);
					die "Runtime error\n" if (!defined($vm_views));
					die "There are no VMs.\n" if (!@$vm_views);
					my @vms = ();
					foreach my $vm (@$vm_views)
					{
						push(@vms, $vm) if ($vm->get_property('runtime.powerState')->val eq "poweredOn");
					}
					$values = generic_performance_values(\@vms, undef, 'mem', ('swapped.average'));
					if (defined($values))
					{
						foreach my $index (0..@vms-1) {
							my $value = simplify_number(convert_number($$values[$index][0]->value) / 1024);
							$output .= $vms[$index]->name . " (" . $value . "MB), " if ($value > 0);
						}
					}
				}
				chop($output);
				chop($output);
			}
		}
		elsif ($subcommand eq "OVERHEAD")
		{
			$values = return_host_performance_values($host, 'mem', ('overhead.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "mem_overhead", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "overhead=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "OVERALL")
		{
			$values = return_host_performance_values($host, 'mem', ('consumed.average', 'overhead.average'));
			if (defined($values))
			{
				my $value = simplify_number((convert_number($$values[0][0]->value) + convert_number($$values[0][1]->value)) / 1024);
				$np->add_perfdata(label => "mem_overhead", value =>  $value, uom => 'MB', threshold => $np->threshold);
				$output = "overall=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "MEMCTL")
		{
			my $host_view;
			($host_view, $values) = return_host_performance_values($host, 'mem', ('vmmemctl.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "mem_memctl", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "memctl=" . $value . " MB: ";
				$res = $np->check_threshold(check => $value);
				if ($res != OK && $outputlist)
				{
					my $vm_views = Vim::find_entity_views(view_type => 'VirtualMachine', begin_entity => $$host_view[0], properties => ['name', 'runtime.powerState']);
					die "Runtime error\n" if (!defined($vm_views));
					die "There are no VMs.\n" if (!@$vm_views);
					my @vms = ();
					foreach my $vm (@$vm_views)
					{
						push(@vms, $vm) if ($vm->get_property('runtime.powerState')->val eq "poweredOn");
					}
					$values = generic_performance_values(\@vms, undef, 'mem', ('vmmemctl.average'));
					if (defined($values))
					{
						foreach my $index (0..@vms-1) {
							my $value = simplify_number(convert_number($$values[$index][0]->value) / 1024);
							$output .= $vms[$index]->name . " (" . $value . "MB), " if ($value > 0);
						}
					}
				}
				chop($output);
				chop($output);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "HOST MEM - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		$values = return_host_performance_values($host, 'mem', ('consumed.average', 'usage.average', 'overhead.average', 'swapused.average', 'vmmemctl.average'));
		if (defined($values))
		{
			my $value1 = simplify_number(convert_number($$values[0][0]->value) / 1024);
			my $value2 = simplify_number(convert_number($$values[0][1]->value) * 0.01);
			my $value3 = simplify_number(convert_number($$values[0][2]->value) / 1024);
			my $value4 = simplify_number(convert_number($$values[0][3]->value) / 1024);
			my $value5 = simplify_number(convert_number($$values[0][4]->value) / 1024);
			$np->add_perfdata(label => "mem_usagemb", value => $value1, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_usage", value => $value2, uom => '%', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_overhead", value => $value3, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_swap", value => $value4, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_memctl", value => $value5, uom => 'MB', threshold => $np->threshold);
			$res = OK;
			$output = "mem usage=" . $value1 . " MB (" . $value2 . "%), overhead=" . $value3 . " MB, swapped=" . $value4 . " MB, memctl=" . $value5 . " MB";
		}
	}

	return ($res, $output);
}

sub host_net_info
{
	my ($host, $np, $subcommand) = @_;

	my $res = CRITICAL;
	my $output = 'HOST NET Unknown error';
	
	if (defined($subcommand))
	{
		if ($subcommand eq "USAGE")
		{
			$values = return_host_temporary_vc_4_1_network_performance_values($host, ('received.average:*', 'transmitted.average:*'));
			if ($values)
			{
				$$values[0][0]{"value"} += $$values[0][1]{"value"};
			}
			else
			{
				$values = return_host_performance_values($host, 'net', ('usage.average'));
			}
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value));
				$np->add_perfdata(label => "net_usage", value => $value, uom => 'KBps', threshold => $np->threshold);
				$output = "net usage=" . $value . " KBps";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "RECEIVE")
		{
			$values = return_host_temporary_vc_4_1_network_performance_values($host, ('received.average:*'));
			$values = return_host_performance_values($host, 'net', ('received.average')) if (!$values);
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value));
				$np->add_perfdata(label => "net_receive", value => $value, uom => 'KBps', threshold => $np->threshold);
				$output = "net receive=" . $value . " KBps";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "SEND")
		{
			$values = return_host_temporary_vc_4_1_network_performance_values($host, ('transmitted.average:*'));
			$values = return_host_performance_values($host, 'net', ('transmitted.average')) if (!$values);
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value));
				$np->add_perfdata(label => "net_send", value => $value, uom => 'KBps', threshold => $np->threshold);
				$output = "net send=" . $value . " KBps";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "NIC")
		{
			my $host_view = Vim::find_entity_view(view_type => 'HostSystem', filter => $host, properties => ['name', 'configManager.networkSystem', 'runtime.inMaintenanceMode']);
			die "Host \"" . $$host{"name"} . "\" does not exist\n" if (!defined($host_view));
			die {msg => ("NOTICE: \"" . $host_view->name . "\" is in maintenance mode, check skipped\n"), code => OK} if (uc($host_view->get_property('runtime.inMaintenanceMode')) eq "TRUE");
			my $network_system = Vim::get_view(mo_ref => $host_view->get_property('configManager.networkSystem') , properties => ['networkInfo']);
			$network_system->update_view_data(['networkInfo']);
			my $network_config = $network_system->networkInfo;
			die "Host \"" . $$host{"name"} . "\" has no network info in the API.\n" if (!defined($network_config));

			$output = "";
			$res = OK;
			my $OKCount = 0;
			my $BadCount = 0;
			my @switches = ();

			# create a hash of NIC info to facilitate easy lookups
			my %NIC = ();
			foreach (@{$network_config->pnic})
			{
				$NIC{$_->key} = $_;
			}

			push(@switches, $network_config->vswitch) if (exists($network_config->{vswitch}));
			push(@switches, $network_config->proxySwitch) if (exists($network_config->{proxySwitch}));

			# see which NICs are actively part of a switch
			foreach my $switch (@switches)
			{
				foreach (@{$switch})
				{
					# get list of physical nics
					if (defined($_->pnic)){
						foreach my $nic_key (@{$_->pnic})
						{
							if (!defined($NIC{$nic_key}->linkSpeed))
							{
								$output .= ", " if ($output);
								$output .= $NIC{$nic_key}->device . " is unplugged";
								$res = CRITICAL;
								$BadCount++;
							}
							else
							{
								$OKCount++;
							}
						}
					}
				}
			}

			if (!$BadCount)
			{
				$output = "All $OKCount NICs are connected";
			}
			else
			{
				$output = $BadCount ."/" . ($BadCount + $OKCount) . " NICs are disconnected: " . $output;
			}
			$np->add_perfdata(label => "OK_NICs", value => $OKCount);
			$np->add_perfdata(label => "Bad_NICs", value => $BadCount);
		}
		else
		{
			$res = CRITICAL;
			$output = "HOST NET - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		my $host_view;
		($host_view, $values) = return_host_performance_values($host, 'net', ('received.average', 'transmitted.average'));
		$output = '';
		if (defined($values))
		{
			my $value1 = simplify_number(convert_number($$values[0][0]->value));
			my $value2 = simplify_number(convert_number($$values[0][1]->value));
			$np->add_perfdata(label => "net_receive", value => $value1, uom => 'KBps', threshold => $np->threshold);
			$np->add_perfdata(label => "net_send", value => $value2, uom => 'KBps', threshold => $np->threshold);
			$res = OK;
			$output = "net receive=" . $value1 . " KBps, send=" . $value2 . " KBps, ";
		}
		$host_view = $$host_view[0];
		$host_view->update_view_data(['configManager.networkSystem']);
		my $network_system = Vim::get_view(mo_ref => $host_view->get_property('configManager.networkSystem') , properties => ['networkInfo']);
		$network_system->update_view_data(['networkInfo']);
		my $network_config = $network_system->networkInfo;
		if (defined($network_config))
		{
			my $OKCount = 0;
			my $BadCount = 0;

			# create a hash of NIC info to facilitate easy lookups
			my %NIC = ();
			foreach (@{$network_config->pnic})
			{
				$NIC{$_->key} = $_;
			}

			my $nic_output = '';
			my @switches = ();

			push(@switches, $network_config->vswitch) if (exists($network_config->{vswitch}));
			push(@switches, $network_config->proxySwitch) if (exists($network_config->{proxySwitch}));

			# see which NICs are actively part of a switch
			foreach my $switch (@switches)
			{
				foreach (@{$switch})
				{
					# get list of physical nics
					if (defined($_->pnic)){
						foreach my $nic_key (@{$_->pnic})
						{
							if (!defined($NIC{$nic_key}->linkSpeed))
							{
								$nic_output .= ", " if ($output);
								$nic_output .= $NIC{$nic_key}->device . " is unplugged";
								$res = CRITICAL;
								$BadCount++;
							}
							else
							{
								$OKCount++;
							}
						}
					}
				}
			}

			if (!$BadCount)
			{
				$output .= "all $OKCount NICs are connected";
			}
			else
			{
				$output .= $BadCount ."/" . ($BadCount + $OKCount) . " NICs are disconnected: " . $nic_output;
			}
			$np->add_perfdata(label => "OK_NICs", value => $OKCount);
			$np->add_perfdata(label => "Bad_NICs", value => $BadCount);
		}
	}

	return ($res, $output);
}

sub host_disk_io_info
{
	my ($host, $np, $subcommand) = @_;

	my $res = CRITICAL;
	my $output = 'HOST IO Unknown error';

	if (defined($subcommand))
	{
		if ($subcommand eq "ABORTED")
		{
			$values = return_host_performance_values($host, 'disk', ('commandsAborted.summation:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value), 0);
				$np->add_perfdata(label => "io_aborted", value => $value, threshold => $np->threshold);
				$output = "io commands aborted=" . $value;
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "RESETS")
		{
			$values = return_host_performance_values($host, 'disk', ('busResets.summation:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value), 0);
				$np->add_perfdata(label => "io_busresets", value => $value, threshold => $np->threshold);
				$output = "io bus resets=" . $value;
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "READ")
		{
			$values = return_host_performance_values($host, 'disk', ('totalReadLatency.average:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value), 0);
				$np->add_perfdata(label => "io_read", value => $value, uom => 'ms', threshold => $np->threshold);
				$output = "io read latency=" . $value . " ms";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "WRITE")
		{
			$values = return_host_performance_values($host, 'disk', ('totalWriteLatency.average:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value), 0);
				$np->add_perfdata(label => "io_write", value => $value, uom => 'ms', threshold => $np->threshold);
				$output = "io write latency=" . $value . " ms";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "KERNEL")
		{
			$values = return_host_performance_values($host, 'disk', ('kernelLatency.average:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value), 0);
				$np->add_perfdata(label => "io_kernel", value => $value, uom => 'ms', threshold => $np->threshold);
				$output = "io kernel latency=" . $value . " ms";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "DEVICE")
		{
			$values = return_host_performance_values($host, 'disk', ('deviceLatency.average:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value), 0);
				$np->add_perfdata(label => "io_device", value => $value, uom => 'ms', threshold => $np->threshold);
				$output = "io device latency=" . $value . " ms";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "QUEUE")
		{
			$values = return_host_performance_values($host, 'disk', ('queueLatency.average:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value), 0);
				$np->add_perfdata(label => "io_queue", value => $value, uom => 'ms', threshold => $np->threshold);
				$output = "io queue latency=" . $value . " ms";
				$res = $np->check_threshold(check => $value);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "HOST IO - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		$values = return_host_performance_values($host, 'disk', ('commandsAborted.summation:*', 'busResets.summation:*', 'totalReadLatency.average:*', 'totalWriteLatency.average:*', 'kernelLatency.average:*', 'deviceLatency.average:*', 'queueLatency.average:*'));
		if (defined($values))
		{
			my $value1 = simplify_number(convert_number($$values[0][0]->value), 0);
			my $value2 = simplify_number(convert_number($$values[0][1]->value), 0);
			my $value3 = simplify_number(convert_number($$values[0][2]->value), 0);
			my $value4 = simplify_number(convert_number($$values[0][3]->value), 0);
			my $value5 = simplify_number(convert_number($$values[0][4]->value), 0);
			my $value6 = simplify_number(convert_number($$values[0][5]->value), 0);
			my $value7 = simplify_number(convert_number($$values[0][6]->value), 0);
			$np->add_perfdata(label => "io_aborted", value => $value1, threshold => $np->threshold);
			$np->add_perfdata(label => "io_busresets", value => $value2, threshold => $np->threshold);
			$np->add_perfdata(label => "io_read", value => $value3, uom => 'ms', threshold => $np->threshold);
			$np->add_perfdata(label => "io_write", value => $value4, uom => 'ms', threshold => $np->threshold);
			$np->add_perfdata(label => "io_kernel", value => $value5, uom => 'ms', threshold => $np->threshold);
			$np->add_perfdata(label => "io_device", value => $value6, uom => 'ms', threshold => $np->threshold);
			$np->add_perfdata(label => "io_queue", value => $value7, uom => 'ms', threshold => $np->threshold);
			$res = OK;
			$output = "io commands aborted=" . $value1 . ", io bus resets=" . $value2 . ", io read latency=" . $value3 . " ms, write latency=" . $value4 . " ms, kernel latency=" . $value5 . " ms, device latency=" . $value6 . " ms, queue latency=" . $value7 ." ms";
		}
	}

	return ($res, $output);
}

sub host_list_vm_volumes_info
{
	my ($host, $np, $subcommand, $blacklist, $perc, $addopts) = @_;

	my $host_view = Vim::find_entity_view(view_type => 'HostSystem', filter => $host, properties => ['name', 'datastore', 'runtime.inMaintenanceMode']);
	die "Host \"" . $$host{"name"} . "\" does not exist\n" if (!defined($host_view));
	die {msg => ("NOTICE: \"" . $host_view->name . "\" is in maintenance mode, check skipped\n"), code => OK} if (uc($host_view->get_property('runtime.inMaintenanceMode')) eq "TRUE");
	die "Insufficient rights to access Datastores on the Host\n" if (!defined($host_view->datastore));

	return datastore_volumes_info($host_view->datastore, $np, $subcommand, $blacklist, $perc, $addopts);
}

sub host_runtime_info
{
	my ($host, $np, $subcommand, $blacklist, $addopts) = @_;

	my $res = CRITICAL;
	my $output = 'HOST RUNTIME Unknown error';
	my $runtime;
	my $host_view = Vim::find_entity_view(view_type => 'HostSystem', filter => $host, properties => ['name', 'runtime', 'overallStatus', 'configIssue']);
	die "Host \"" . $$host{"name"} . "\" does not exist\n" if (!defined($host_view));
	$host_view->update_view_data(['name', 'runtime', 'overallStatus', 'configIssue']);
	$runtime = $host_view->runtime;
	die {msg => ("NOTICE: \"" . $host_view->name . "\" is in maintenance mode, check skipped\n"), code => OK} if ($runtime->inMaintenanceMode);

	my %base_units = (
		'Degrees C' => 'C',
		'Degrees F' => 'F',
		'Degrees K' => 'K',
		'Volts' => 'V',
		'Amps' => 'A',
		'Watts' => 'W',
		'Percentage' => 'Pct'
	);
	my $blackregexpflag;
	my $listitems;
	$blackregexpflag = $addopts =~ m/(^|\s|\t|,)\Qblacklistregexp\E($|\s|\t|,)/ if (defined($addopts));
	$listitems = $addopts =~ m/(^|\s|\t|,)\Qlistitems\E($|\s|\t|,)/ if (defined($addopts));

	if (defined($subcommand))
	{
		if ($subcommand eq "CON")
		{
			$output = "connection state=" . $runtime->connectionState->val;
			$res = OK if (uc($runtime->connectionState->val) eq "CONNECTED");
		}
		elsif ($subcommand eq "HEALTH")
		{
			my $OKCount = 0;
			my $AlertCount = 0;
			my ($cpuStatusInfo, $storageStatusInfo, $memoryStatusInfo, $numericSensorInfo);
			my $components = {};

			$res = UNKNOWN;

			if(defined($runtime->healthSystemRuntime))
			{
				$cpuStatusInfo = $runtime->healthSystemRuntime->hardwareStatusInfo->cpuStatusInfo;
				$storageStatusInfo = $runtime->healthSystemRuntime->hardwareStatusInfo->storageStatusInfo;
				$memoryStatusInfo = $runtime->healthSystemRuntime->hardwareStatusInfo->memoryStatusInfo;
				$numericSensorInfo = $runtime->healthSystemRuntime->systemHealthInfo->numericSensorInfo;

				$output = '';

				if (defined($cpuStatusInfo))
				{
					foreach (@$cpuStatusInfo)
					{
						# print "CPU Name = ". $_->name .", Label = ". $_->status->label . ", Summary = ". $_->status->summary . ", Key = ". $_->status->key . "\n";
						if (defined($blacklist))
						{
							my $name = $_->name;
							next if ($blackregexpflag?$name =~ /$blacklist/:$blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/);
						}
						my $state = check_health_state($_->status->key);
						my $itemref = {
							name => $_->name,
							summary => $_->status->summary
						};
						push(@{$components->{$state}{CPU}}, $itemref);
						if ($state != OK) {
							$res = Nagios::Plugin::Functions::max_state($res, $state);
							$AlertCount++;
						} else {
							$OKCount++;
						}
					}
				}

				if (defined($storageStatusInfo))
				{
					foreach (@$storageStatusInfo)
					{
						# print "Storage Name = ". $_->name .", Label = ". $_->status->label . ", Summary = ". $_->status->summary . ", Key = ". $_->status->key . "\n";
						if (defined($blacklist))
						{
							my $name = $_->name;
							next if ($blackregexpflag?$name =~ /$blacklist/:$blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/);
						}
						my $state = check_health_state($_->status->key);
						my $itemref = {
							name => $_->name,
							summary => $_->status->summary
						};
						push(@{$components->{$state}{Storage}}, $itemref);
						if ($state != OK) {
							$res = Nagios::Plugin::Functions::max_state($res, $state);
							$AlertCount++;
						} else {
							$OKCount++;
						}
					}
				}

				if (defined($memoryStatusInfo))
				{
					foreach (@$memoryStatusInfo)
					{
						# print "Memory Name = ". $_->name .", Label = ". $_->status->label . ", Summary = ". $_->status->summary . ", Key = ". $_->status->key . "\n";
						if (defined($blacklist))
						{
							my $name = $_->name;
							next if ($blackregexpflag?$name =~ /$blacklist/:$blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/);
						}
						my $state = check_health_state($_->status->key);
						my $itemref = {
							name => $_->name,
							summary => $_->status->summary
						};
						push(@{$components->{$state}{Memory}}, $itemref);
						if ($state != OK) {
							$res = Nagios::Plugin::Functions::max_state($res, $state);
							$AlertCount++;
						} else {
							$OKCount++;
						}
					}
				}

				if (defined($numericSensorInfo))
				{
					foreach (@$numericSensorInfo)
					{
						# print "Sensor Name = ". $_->name .", Type = ". $_->sensorType . ", Label = ". $_->healthState->label . ", Summary = ". $_->healthState->summary . ", Key = " . $_->healthState->key . "\n";
						if (defined($blacklist))
						{
							my $name = $_->name;
							next if ($blackregexpflag?$name =~ /$blacklist/:$blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/);
						}
						my $state = check_health_state($_->healthState->key);
						my $itemref = {
							name => $_->name,
							summary => $_->healthState->summary
						};
						push(@{$components->{$state}{$_->sensorType}}, $itemref);
						if ($state != OK) {
							$res = Nagios::Plugin::Functions::max_state($res, $state);
							$AlertCount++;
						} else {
							$OKCount++;
						}
					}
				}

				if ($listitems) {
					foreach my $fstate (reverse(sort(keys(%$components)))) {
						foreach my $state_ref ($components->{$fstate}) {
							foreach my $type (keys(%$state_ref)) {
								foreach my $item_ref (@{$state_ref->{$type}}) {
									$output .=  "($STATUS_TEXT{$fstate})  \[$type\]  |  $item_ref->{name}  |  $item_ref->{summary}\n";
								}
							}
						}
					}
				} else {
					if ($AlertCount > 0) {
						$output = "$AlertCount health issue(s) found in " . ($AlertCount + $OKCount) . " checks:\n";
						my $AlertIndex = 0;
						foreach my $fstate (reverse(sort(keys(%$components)))) {
							next if ($fstate == 0);
							foreach my $state_ref ( $components->{$fstate}) {
								foreach my $type ( keys(%$state_ref)) {
									foreach my $item_ref (@{$state_ref->{$type}}) {
										$output .=  ++$AlertIndex . ") $STATUS_TEXT{$fstate}\[$type\] Status of $item_ref->{name}: $item_ref->{summary}\n";
									}
								}
							}
						}
					} else {
						$output = "All $OKCount health checks are GREEN:";
						foreach my $type (keys(%{$components->{0}})) {
							$output .= " " . $type . " (" . (scalar(@{$components->{0}{$type}})) . "x);";
						}					
					}
					$res = OK;
				}
			}
			else
			{
				$output = "System health status unavailable";
			}

			$np->add_perfdata(label => "Alerts", value => $AlertCount);
		}
		elsif ($subcommand eq "STORAGEHEALTH")
		{
			my $OKCount = 0;
			my $AlertCount = 0;
			my $storageStatusInfo;
			my $components = {};
			$res = UNKNOWN;

			if(defined($runtime->healthSystemRuntime) && defined($runtime->healthSystemRuntime->hardwareStatusInfo->storageStatusInfo))
			{
				$storageStatusInfo = $runtime->healthSystemRuntime->hardwareStatusInfo->storageStatusInfo;
				$output = '';
				foreach (@$storageStatusInfo)
				{
					if (defined($blacklist))
					{
						my $name = $_->name;
						next if ($blackregexpflag?$name =~ /$blacklist/:$blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/);
					}
					my $state = check_health_state($_->status->key);
					$components->{$state}{"Storage"}{$_->name} = $_->status->summary;
					if ($state != OK)
					{
						$res = Nagios::Plugin::Functions::max_state($res, $state);
						$AlertCount++;
					} else {
						$OKCount++;
					}
				}

				foreach my $fstate (reverse(sort(keys(%$components)))) {
					foreach my $state_ref ($components->{$fstate}) {
						foreach my $type (keys(%$state_ref)) {
							foreach my $name (keys(%{$state_ref->{$type}})) {
								$output .=  "$STATUS_TEXT{$fstate}: Status of $name: $state_ref->{$type}{$name}\n";
							}
						}
					}
				}

				if ($AlertCount > 0) {
					$output = "$AlertCount health issue(s) found: \n" . $output;
				} else {
					$output = "All $OKCount Storage health checks are GREEN: \n" . $output;
					$res = OK;
				}
			}
			else
			{
				$res = UNKNOWN;
				$output = "Storage health status unavailable";
			}
			$np->add_perfdata(label => "Alerts", value => $AlertCount);
		}
		elsif ($subcommand eq "TEMPERATURE")
		{
			my $OKCount = 0;
			my $AlertCount = 0;
			my $numericSensorInfo;
			my $components = {};
			$res = UNKNOWN;

			if(defined($runtime->healthSystemRuntime))
			{
				$numericSensorInfo = $runtime->healthSystemRuntime->systemHealthInfo->numericSensorInfo;
				$output = '';

				if (defined($numericSensorInfo))
				{
					foreach (@$numericSensorInfo)
					{
						# print "Sensor Name = ". $_->name .", Type = ". $_->sensorType . ", Label = ". $_->healthState->label . ", Summary = ". $_->healthState->summary . ", Key = " . $_->healthState->key . "\n";
						next if (uc($_->sensorType) ne 'TEMPERATURE');
						if (defined($blacklist))
						{
							my $name = $_->name;
							next if ($blackregexpflag?$name =~ /$blacklist/:$blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/);
						}

						my $state = check_health_state($_->healthState->key);
						$_->name =~ m/(.*?)\sTemp\s+-.+/;
						my $itemref = {
							name => $1,
							power10 => $_->unitModifier,
							state => $_->healthState->key,
							value => $_->currentReading,
							unit => $_->baseUnits,
						};
						push(@{$components->{$state}}, $itemref);
						if ($state != OK)
						{
							$res = Nagios::Plugin::Functions::max_state($res, $state);
							$AlertCount++;
						}
						else
						{
							$OKCount++;
						}
						if (exists($base_units{$itemref->{unit}}))
						{
							$np->add_perfdata(label => $itemref->{name}, value => ($itemref->{value} * 10 ** $itemref->{power10}), uom => $base_units{$itemref->{unit}});
						}
						else
						{
							$np->add_perfdata(label => $itemref->{name}, value => ($itemref->{value} * 10 ** $itemref->{power10}));
						}
					}
				}

				foreach my $curstate (reverse(sort(keys(%$components))))
				{
					foreach my $itemref (@{$components->{$curstate}})
					{
						my $value = $itemref->{value} * 10 ** $itemref->{power10};
						my $unit = exists($base_units{$itemref->{unit}}) ? $base_units{$itemref->{unit}} : '';
						my $name = $itemref->{name};
						$output .= ", " if ($output);
						$output .=  "$STATUS_TEXT{$curstate} : $name = $value $unit";
					}
				}

				if ($AlertCount > 0)
				{
					$output = "$AlertCount temperature issue(s) found:" . $output;
				}
				else
				{
					$output = "All $OKCount temperature checks are GREEN: " . $output;
					$res = OK;
				}                               
			}
			else
			{
				$output = "Temperature status unavailable";
			}
		}
		elsif ($subcommand eq "MAINTENANCE")
		{
			my %host_maintenance_state = (0 => "no", 1 => "yes");
			$output = "maintenance=" . $host_maintenance_state{$runtime->inMaintenanceMode};
			$res = OK;
		}
		elsif (($subcommand eq "LIST") || ($subcommand eq "LISTVM"))
		{
			my %vm_state_strings = ("poweredOn" => "UP", "poweredOff" => "DOWN", "suspended" => "SUSPENDED");
			my $vm_views = Vim::find_entity_views(view_type => 'VirtualMachine', begin_entity => $host_view, properties => ['name', 'runtime']);
			die "Runtime error\n" if (!defined($vm_views));
			die "There are no VMs.\n" if (!@$vm_views);
			my $up = 0;
			$output = '';

			foreach my $vm (@$vm_views)
			{
				my $vm_state = $vm_state_strings{$vm->runtime->powerState->val};
				if ($vm_state eq "UP")
				{
					$up++;
					$output .= $vm->name . "(OK), ";
				}
				else
				{
					$output = $vm->name . "(" . $vm_state . "), " . $output;
				}
			}

			chop($output);
			chop($output);
			$res = OK;
			$output = $up . "/" . @$vm_views . " VMs up: " . $output;
			$np->add_perfdata(label => "vmcount", value => $up, uom => 'units', threshold => $np->threshold);
			$res = $np->check_threshold(check => $up) if (defined($np->threshold));
		}
		elsif ($subcommand eq "STATUS")
		{
			my $status = $host_view->overallStatus->val;
			$output = "overall status=" . $status;
			$res = check_health_state($status);
		}
		elsif ($subcommand eq "ISSUES")
		{
			my $issues = $host_view->configIssue;

			$output = '';
			if (defined($issues))
			{
				foreach (@$issues)
				{
					if (defined($blacklist))
					{
						my $name = ref($_);
						next if ($blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/);
					}
					$output .= format_issue($_) . "; ";
				}
			}

			if ($output eq '')
			{
				$res = OK;
				$output = 'No config issues';
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "HOST RUNTIME - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		my %host_maintenance_state = (0 => "no", 1 => "yes");
		my $vm_views = Vim::find_entity_views(view_type => 'VirtualMachine', begin_entity => $host_view, properties => ['name', 'runtime']);
		my $up = 0;

		die "Runtime error\n" if (!defined($vm_views));
		if (@$vm_views)
		{
			foreach my $vm (@$vm_views)
			{
				$up += $vm->runtime->powerState->val eq "poweredOn";
			}
			$output = $up . "/" . @$vm_views . " VMs up";
		}
		else
		{
			$output = "No VMs installed";
		}
		$np->add_perfdata(label => "vmcount", value => $up, uom => 'units', threshold => $np->threshold);

		my $AlertCount = 0;
		my $SensorCount = 0;
		my ($cpuStatusInfo, $storageStatusInfo, $memoryStatusInfo, $numericSensorInfo);
		if(defined($runtime->healthSystemRuntime))
		{
			$cpuStatusInfo = $runtime->healthSystemRuntime->hardwareStatusInfo->cpuStatusInfo;
			$storageStatusInfo = $runtime->healthSystemRuntime->hardwareStatusInfo->storageStatusInfo;
			$memoryStatusInfo = $runtime->healthSystemRuntime->hardwareStatusInfo->memoryStatusInfo;
			$numericSensorInfo = $runtime->healthSystemRuntime->systemHealthInfo->numericSensorInfo;
		}

		if (defined($cpuStatusInfo))
		{
			foreach (@$cpuStatusInfo)
			{
				$SensorCount++;
				$AlertCount++ if (check_health_state($_->status->key) != OK);
			}
		}

		if (defined($storageStatusInfo))
		{
			foreach (@$storageStatusInfo)
			{
				$SensorCount++;
				$AlertCount++ if (check_health_state($_->status->key) != OK);
			}
		}

		if (defined($memoryStatusInfo))
		{
			foreach (@$memoryStatusInfo)
			{
				$SensorCount++;
				$AlertCount++ if (check_health_state($_->status->key) != OK);
			}
		}

		if (defined($numericSensorInfo))
		{
			foreach (@$numericSensorInfo)
			{
				$SensorCount++;
				$AlertCount++ if (check_health_state($_->healthState->key) != OK);
			}
		}

		$res = OK;
		$output .= ", overall status=" . $host_view->overallStatus->val . ", connection state=" . $runtime->connectionState->val . ", maintenance=" . $host_maintenance_state{$runtime->inMaintenanceMode} . ", ";

		if ($AlertCount)
		{
			$output .= "$AlertCount health issue(s), ";
		}
		else
		{
			$output .= "All $SensorCount health checks are Green, ";
		}
		$np->add_perfdata(label => "health_issues", value => $AlertCount);

		my $issues = $host_view->configIssue;
		if (defined($issues))
		{
			$output .= @$issues . " config issue(s)";
			$np->add_perfdata(label => "config_issues", value => "" . @$issues);
		}
		else
		{
			$output .= "no config issues";
			$np->add_perfdata(label => "config_issues", value => 0);
		}
	}

	return ($res, $output);
}

sub host_service_info
{
	my ($host, $np, $subcommand) = @_;

	my $res = CRITICAL;
	my $output = 'HOST RUNTIME Unknown error';
	my $host_view = Vim::find_entity_view(view_type => 'HostSystem', filter => $host, properties => ['name', 'configManager', 'runtime.inMaintenanceMode']);
	die "Host \"" . $$host{"name"} . "\" does not exist\n" if (!defined($host_view));
	die {msg => ("NOTICE: \"" . $host_view->name . "\" is in maintenance mode, check skipped\n"), code => OK} if (uc($host_view->get_property('runtime.inMaintenanceMode')) eq "TRUE");

	my $services = Vim::get_view(mo_ref => $host_view->configManager->serviceSystem, properties => ['serviceInfo'])->serviceInfo->service;

	if (defined($subcommand))
	{
		$subcommand = ',' . $subcommand . ',';
		$output = '';
		foreach (@$services)
		{
			my $srvname = $_->key;
			if ($subcommand =~ s/,$srvname,/,/g)
			{
				while ($subcommand =~ s/,$srvname,/,/g){};
				$output .= $srvname . ", " if (!$_->running);
			}
		}
		$subcommand =~ s/^,//;
		chop($subcommand);

		if ($subcommand ne '')
		{
			$res = UNKNOWN;
			$output = "unknown services : $subcommand";
		}
		elsif ($output eq '')
		{
			$res = OK;
			$output = "All services are in their apropriate state.";
		}
		else
		{
			chop($output);
			chop($output);
			$output .= " are down";
		}
	}
	else
	{
		my %service_state = (0 => "down", 1 => "up");
		$res = OK;
		$output = "services : ";
		$output .= $_->key . " (" . $service_state{$_->running} . "), " foreach (@$services);
		chop($output);
		chop($output);
	}

	return ($res, $output);
}

sub host_storage_info
{
	my ($host, $np, $subcommand, $blacklist) = @_;

	my $count = 0;
	my $res = CRITICAL;
	my $output = 'HOST RUNTIME Unknown error';
	my $host_view = Vim::find_entity_view(view_type => 'HostSystem', filter => $host, properties => ['name', 'configManager', 'runtime.inMaintenanceMode']);
	die "Host \"" . $$host{"name"} . "\" does not exist\n" if (!defined($host_view));
	die {msg => ("NOTICE: \"" . $host_view->name . "\" is in maintenance mode, check skipped\n"), code => OK} if (uc($host_view->get_property('runtime.inMaintenanceMode')) eq "TRUE");

	my $storage = Vim::get_view(mo_ref => $host_view->configManager->storageSystem, properties => ['storageDeviceInfo']);

	if (defined($subcommand))
	{
		if ($subcommand eq "ADAPTER")
		{
			$output = "";
			$res = OK;
			foreach my $dev (@{$storage->storageDeviceInfo->hostBusAdapter})
			{
				my $name = $dev->device;
				my $status = $dev->status;
				if (defined($blacklist))
				{
					my $key = $dev->key;
					if (($blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/) || ($blacklist =~ m/(^|\s|\t|,)\Q$key\E($|\s|\t|,)/))
					{
						$count++;
						$status = "ignored";
					}
				}
				$count ++ if (uc($status) eq "ONLINE");
				$res = UNKNOWN if (uc($status) eq "UNKNOWN");
				$output .= $name . " (" . $status . "); ";
			}
			my $state = $np->check_threshold(check => $count);
			$res = $state if ($state != OK);
			$np->add_perfdata(label => "adapters", value => $count, uom => 'units', threshold => $np->threshold);
		}
		elsif ($subcommand eq "LUN")
		{
			$output = "";
			$res = OK;
			my $state = OK; # For unkonwn or other statuses
			foreach my $scsi (@{$storage->storageDeviceInfo->scsiLun})
			{
				my $name = "";
				if (exists($scsi->{displayName}))
				{
					$name = $scsi->displayName;
				}
				elsif (exists($scsi->{canonicalName}))
				{
					$name = $scsi->canonicalName;
				}
				else
				{
					$name = $scsi->deviceName;
				}
				$state = OK;

				my $operationState;
				if (defined($blacklist) && ($blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/))
				{
					$operationState = "ignored";
				}
				else
				{
					$operationState = join("-", @{$scsi->operationalState});
					foreach (@{$scsi->operationalState})
					{
						if (uc($_) eq "OK")
						{
							# $state = OK;
						}
						elsif (uc($_) eq "UNKNOWN")
						{
							$res = UNKNOWN;
						}
						elsif (uc($_) eq "UNKNOWNSTATE")
						{
							$res = UNKNOWN;
						}
						else
						{
							$state = CRITICAL;
						}
					}
				}

				$count++ if ($state == OK);
				$output .= $name . " <" . $operationState . ">; ";
			}
			$np->add_perfdata(label => "LUNs", value => $count, uom => 'units', threshold => $np->threshold);
			$state = $np->check_threshold(check => $count);
			$res = $state if ($state != OK);
		}
		elsif ($subcommand eq "PATH")
		{
			if (exists($storage->storageDeviceInfo->{multipathInfo}))
			{
				$output = "";
				$res = OK;
				foreach my $lun (@{$storage->storageDeviceInfo->multipathInfo->lun})
				{
					foreach my $path (@{$lun->path})
					{
						my $status = UNKNOWN; # For unknown or other statuses
						my $pathState = "unknown";
						my $name = $path->name;

						if (exists($path->{state}))
						{
							$pathState = $path->state;
						}
						else
						{
							$pathState = $path->pathState;
						}

						if (defined($blacklist) && ($blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/))
						{
							$pathState = "ignored";
							$count++;
						}

						$count++ if (uc($pathState) eq "ACTIVE");
						$res = UNKNOWN if (uc($pathState) eq "UNKNOWN");
						$output .= $name . " <" . $pathState . ">; ";
					}
				}
				$np->add_perfdata(label => "paths", value => $count, uom => 'units', threshold => $np->threshold);
				my $state = $np->check_threshold(check => $count);
				$res = $state if ($state != OK);
			}
			else
			{
				$output = "path info is unavailable on this host";
				$res = UNKNOWN;
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "HOST STORAGE - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		my $status = UNKNOWN;
		my $state = OK;
		$output = "";
		$res = OK;
		foreach my $dev (@{$storage->storageDeviceInfo->hostBusAdapter})
		{
			$status = UNKNOWN;
			if (uc($dev->status) eq "ONLINE")
			{
				$status = OK;
				$count++;
			}
			elsif (uc($dev->status) eq "OFFLINE")
			{
				$status = CRITICAL;
			}
			elsif (uc($dev->status) eq "FAULT")
			{
				$status = CRITICAL;
			}
			else
			{
				$res = UNKNOWN;
			}
			$state = Nagios::Plugin::Functions::max_state($state, $status);
		}
		$np->add_perfdata(label => "adapters", value => $count, uom => 'units', threshold => $np->threshold);
		$output .= $count . "/" . @{$storage->storageDeviceInfo->hostBusAdapter} . " adapters online, ";

		$count = 0;
		foreach my $scsi (@{$storage->storageDeviceInfo->scsiLun})
		{
			$status = UNKNOWN;
			foreach (@{$scsi->operationalState})
			{
				if (uc($_) eq "OK")
				{
					$status = OK;
					$count++;
				}
				elsif (uc($_) eq "ERROR")
				{
					$status = CRITICAL;
				}
				elsif (uc($_) eq "UNKNOWNSTATE")
				{
					$status = UNKNOWN;
				}
				elsif (uc($_) eq "OFF")
				{
					$status = CRITICAL;
				}
				elsif (uc($_) eq "QUIESCED")
				{
					$status = WARNING;
				}
				elsif (uc($_) eq "DEGRADED")
				{
					$status = WARNING;
				}
				elsif (uc($_) eq "LOSTCOMMUNICATION")
				{
					$status = CRITICAL;
				}
				else
				{
					$res = UNKNOWN;
					$status = UNKNOWN;
				}
				$state = Nagios::Plugin::Functions::max_state($state, $status);
			}
		}
		$np->add_perfdata(label => "LUNs", value => $count, uom => 'units', threshold => $np->threshold);
		$output .= $count . "/" . @{$storage->storageDeviceInfo->scsiLun} . " LUNs ok, ";

		if (exists($storage->storageDeviceInfo->{multipathInfo}))
		{
			$count = 0;
			my $amount = 0;
			foreach my $lun (@{$storage->storageDeviceInfo->multipathInfo->lun})
			{
				foreach my $path (@{$lun->path})
				{
					my $status = UNKNOWN; # For unkonwn or other statuses
					my $pathState = "unknown";
					if (exists($path->{state}))
					{
						$pathState = $path->state;
					}
					else
					{
						$pathState = $path->pathState;
					}

					$status = UNKNOWN;
					if (uc($pathState) eq "ACTIVE")
					{
						$status = OK;
						$count++;
					}
					elsif (uc($pathState) eq "DISABLED")
					{
						$status = WARNING;
					}
					elsif (uc($pathState) eq "STANDBY")
					{
						$status = WARNING;
					}
					elsif (uc($pathState) eq "DEAD")
					{
						$status = CRITICAL;
					}
					else
					{
						$res = UNKNOWN;
						$status = UNKNOWN;
					}
					$state = Nagios::Plugin::Functions::max_state($state, $status);
					$amount++;
				}
			}
			$np->add_perfdata(label => "paths", value => $count, uom => 'units', threshold => $np->threshold);
			$output .= $count . "/" . $amount . " paths active";
		}
		else
		{
			$output .= "no path info";
		}

		$res = $state if ($state != OK);
	}

	return ($res, $output);
}

sub format_uptime {
	my($uptime) = @_;

	my $days = $uptime / (60 * 60 * 24);
	$uptime %= (60 * 60 * 24);

	my $hours = $uptime / (60 * 60);
	$uptime %= (60 * 60);

	my $minutes = $uptime / 60;
	my $seconds = $uptime % 60;

	if ($days == 0)
	{
		$output = sprintf("%d:%02d:%02d", $hours, $minutes, $seconds); 
	}
	elsif ($days == 1)
	{
		$output = sprintf("1 day, %d:%02d:%02d", $hours, $minutes, $seconds);
	}
	else {
		$output = sprintf("%d days, %d:%02d:%02d", $days, $hours, $minutes, $seconds);
	}

	return $output;
}

sub host_uptime_info
{
	my ($host, $np, $addopts) = @_;

	my $res = CRITICAL;
	my $output = 'HOST UPTIME Unknown error';

	my $quickStats;
	$quickStats = $addopts =~ m/(^|\s|\t|,)\Qquickstats\E($|\s|\t|,)/ if (defined($addopts));

	my $value;
	if (defined($quickStats))
	{
		my $host_view = Vim::find_entity_view(view_type => 'HostSystem', filter => $host, properties => ['name', 'runtime.inMaintenanceMode', 'summary.quickStats']);
		die "Host \"" . $$host{"name"} . "\" does not exist\n" if (!defined($host_view));
		die {msg => ("NOTICE: \"" . $host_view->name . "\" is in maintenance mode, check skipped\n"), code => OK} if (uc($host_view->get_property('runtime.inMaintenanceMode')) eq "TRUE");
		$values = $host_view->get_property('summary.quickStats');
		$value = simplify_number($values->uptime, 0) if exists($values->{uptime});
	}
	else
	{
		$values = return_host_performance_values($host, 'sys', ('uptime.latest'));
		$value = simplify_number(convert_number($$values[0][0]->value), 0) if (defined($values));
	}
	if (defined($value))
	{
		$np->add_perfdata(label => "uptime", value => $value, uom => 's', threshold => $np->threshold);
		$output = "uptime=" . format_uptime($value);
		$res = $np->check_threshold(check => $value);
		}

	return ($res, $output);
}
#==========================================================================| VM |============================================================================#

sub vm_cpu_info
{
	my ($vmname, $np, $subcommand) = @_;

	my $res = CRITICAL;
	my $output = 'HOST-VM CPU Unknown error';

	if (defined($subcommand))
	{
		if ($subcommand eq "USAGE")
		{
			$values = return_host_vmware_performance_values($vmname, 'cpu', ('usage.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) * 0.01);
				$np->add_perfdata(label => "cpu_usage", value => $value, uom => '%', threshold => $np->threshold);
				$output = "\"$vmname\" cpu usage=" . $value . " %"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "USAGEMHZ")
		{
			$values = return_host_vmware_performance_values($vmname, 'cpu', ('usagemhz.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value));
				$np->add_perfdata(label => "cpu_usagemhz", value => $value, uom => 'Mhz', threshold => $np->threshold);
				$output = "\"$vmname\" cpu usage=" . $value . " MHz";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "WAIT")
		{
			$values = return_host_vmware_performance_values($vmname, 'cpu', ('wait.summation:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value));
				$np->add_perfdata(label => "cpu_wait", value => $value, uom => 'ms', threshold => $np->threshold);
				$output = "\"$vmname\" cpu wait=" . $value . " ms";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "READY")
		{
			$values = return_host_vmware_performance_values($vmname, 'cpu', ('ready.summation:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value));
				$np->add_perfdata(label => "cpu_ready", value => $value, uom => 'ms', threshold => $np->threshold);
				$output = "\"$vmname\" cpu ready=" . $value . " ms";
				$res = $np->check_threshold(check => $value);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "HOST-VM CPU - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		$values = return_host_vmware_performance_values($vmname, 'cpu', ('usagemhz.average', 'usage.average', 'wait.summation:*', 'ready.summation:*'));
		if (defined($values))
		{
			my $value1 = simplify_number(convert_number($$values[0][0]->value));
			my $value2 = simplify_number(convert_number($$values[0][1]->value) * 0.01);
			my $value3 = simplify_number(convert_number($$values[0][2]->value));
			my $value4 = simplify_number(convert_number($$values[0][3]->value));
			$np->add_perfdata(label => "cpu_usagemhz", value => $value1, uom => 'Mhz', threshold => $np->threshold);
			$np->add_perfdata(label => "cpu_usage", value => $value2, uom => '%', threshold => $np->threshold);
			$np->add_perfdata(label => "cpu_wait", value => $value3, uom => 'ms', threshold => $np->threshold);
			$np->add_perfdata(label => "cpu_ready", value => $value4, uom => 'ms', threshold => $np->threshold);
			$res = OK;
			$output = "\"$vmname\" cpu usage=" . $value1 . " MHz(" . $value2 . "%), wait=" . $value3 . " ms, ready=" . $value4 . " ms";
		}
	}

	return ($res, $output);
}

sub vm_mem_info
{
	my ($vmname, $np, $subcommand) = @_;

	my $res = CRITICAL;
	my $output = 'HOST-VM MEM Unknown error';

	if (defined($subcommand))
	{
		if ($subcommand eq "USAGE")
		{
			$values = return_host_vmware_performance_values($vmname, 'mem', ('usage.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) * 0.01);
				$np->add_perfdata(label => "mem_usage", value => $value, uom => '%', threshold => $np->threshold);
				$output = "\"$vmname\" mem usage=" . $value . " %"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "USAGEMB")
		{
			$values = return_host_vmware_performance_values($vmname, 'mem', ('consumed.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "mem_usagemb", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "\"$vmname\" mem usage=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "SWAP")
		{
			$values = return_host_vmware_performance_values($vmname, 'mem', ('swapped.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "mem_swap", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "\"$vmname\" swap usage=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "SWAPIN")
		{
			$values = return_host_vmware_performance_values($vmname, 'mem', ('swapin.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "mem_swapin", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "\"$vmname\" swapin=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "SWAPOUT")
		{
			$values = return_host_vmware_performance_values($vmname, 'mem', ('swapout.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "mem_swapout", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "\"$vmname\" swapout=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "OVERHEAD")
		{
			$values = return_host_vmware_performance_values($vmname, 'mem', ('overhead.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "mem_overhead", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "\"$vmname\" mem overhead=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "OVERALL")
		{
			$values = return_host_vmware_performance_values($vmname, 'mem', ('consumed.average', 'overhead.average'));
			if (defined($values))
			{
				my $value = simplify_number((convert_number($$values[0][0]->value) + convert_number($$values[0][1]->value)) / 1024);
				$np->add_perfdata(label => "mem_overall", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "\"$vmname\" mem overall=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "ACTIVE")
		{
			$values = return_host_vmware_performance_values($vmname, 'mem', ('active.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "mem_active", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "\"$vmname\" mem active=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "MEMCTL")
		{
			$values = return_host_vmware_performance_values($vmname, 'mem', ('vmmemctl.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "mem_memctl", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "\"$vmname\" mem memctl=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "HOST-VM MEM - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		$values = return_host_vmware_performance_values($vmname, 'mem', ('consumed.average', 'usage.average', 'overhead.average', 'active.average', 'swapped.average', 'swapin.average', 'swapout.average', 'vmmemctl.average'));
		if (defined($values))
		{
			my $value1 = simplify_number(convert_number($$values[0][0]->value) / 1024);
			my $value2 = simplify_number(convert_number($$values[0][1]->value) * 0.01);
			my $value3 = simplify_number(convert_number($$values[0][2]->value) / 1024);
			my $value4 = simplify_number(convert_number($$values[0][3]->value) / 1024);
			my $value5 = simplify_number(convert_number($$values[0][4]->value) / 1024);
			my $value6 = simplify_number(convert_number($$values[0][5]->value) / 1024);
			my $value7 = simplify_number(convert_number($$values[0][6]->value) / 1024);
			my $value8 = simplify_number(convert_number($$values[0][7]->value) / 1024);
			$np->add_perfdata(label => "mem_usagemb", value => $value1, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_usage", value => $value2, uom => '%', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_overhead", value => $value3, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_active", value => $value4, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_swap", value => $value5, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_swapin", value => $value6, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_swapout", value => $value7, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_memctl", value => $value8, uom => 'MB', threshold => $np->threshold);
			$res = OK;
			$output = "\"$vmname\" mem usage=" . $value1 . " MB(" . $value2 . "%), overhead=" . $value3 . " MB, active=" . $value4 . " MB, swapped=" . $value5 . " MB, swapin=" . $value6 . " MB, swapout=" . $value7 . " MB, memctl=" . $value8 . " MB";
		}
	}

	return ($res, $output);
}

sub vm_net_info
{
	my ($vmname, $np, $subcommand) = @_;

	my $res = CRITICAL;
	my $output = 'HOST-VM NET Unknown error';

	if (defined($subcommand))
	{
		if ($subcommand eq "USAGE")
		{
			$values = return_host_vmware_performance_values($vmname, 'net', ('usage.average:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value));
				$np->add_perfdata(label => "net_usage", value => $value, uom => 'KBps', threshold => $np->threshold);
				$output = "\"$vmname\" net usage=" . $value . " KBps"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "RECEIVE")
		{
			$values = return_host_vmware_performance_values($vmname, 'net', ('received.average:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value));
				$np->add_perfdata(label => "net_receive", value => $value, uom => 'KBps', threshold => $np->threshold);
				$output = "\"$vmname\" net receive=" . $value . " KBps"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "SEND")
		{
			$values = return_host_vmware_performance_values($vmname, 'net', ('transmitted.average:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value));
				$np->add_perfdata(label => "net_send", value => $value, uom => 'KBps', threshold => $np->threshold);
				$output = "\"$vmname\" net send=" . $value . " KBps"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "HOST-VM NET - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		$values = return_host_vmware_performance_values($vmname, 'net', ('received.average:*', 'transmitted.average:*'));
		if (defined($values))
		{
			my $value1 = simplify_number(convert_number($$values[0][0]->value));
			my $value2 = simplify_number(convert_number($$values[0][1]->value));
			$np->add_perfdata(label => "net_receive", value => $value1, uom => 'KBps', threshold => $np->threshold);
			$np->add_perfdata(label => "net_send", value => $value2, uom => 'KBps', threshold => $np->threshold);
			$res = OK;
			$output = "\"$vmname\" net receive=" . $value1 . " KBps, send=" . $value2 . " KBps";
		}
	}

	return ($res, $output);
}

sub vm_disk_io_info
{
	my ($vmname, $np, $subcommand) = @_;

	my $res = CRITICAL;
	my $output = 'HOST-VM IO Unknown error';

	if (defined($subcommand))
	{
		if ($subcommand eq "USAGE")
		{
			$values = return_host_vmware_performance_values($vmname, 'disk', ('usage.average:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "io_usage", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "\"$vmname\" io usage=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "READ")
		{
			$values = return_host_vmware_performance_values($vmname, 'disk', ('read.average:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "io_read", value => $value, uom => 'MB/s', threshold => $np->threshold);
				$output = "\"$vmname\" io read=" . $value . " MB/s";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "WRITE")
		{
			$values = return_host_vmware_performance_values($vmname, 'disk', ('write.average:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "io_write", value => $value, uom => 'MB/s', threshold => $np->threshold);
				$output = "\"$vmname\" io write=" . $value . " MB/s";
				$res = $np->check_threshold(check => $value);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "HOST IO - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		$values = return_host_vmware_performance_values($vmname, 'disk', ('usage.average:*', 'read.average:*', 'write.average:*'));
		if (defined($values))
		{
			my $value1 = simplify_number(convert_number($$values[0][0]->value) / 1024);
			my $value2 = simplify_number(convert_number($$values[0][1]->value) / 1024);
			my $value3 = simplify_number(convert_number($$values[0][2]->value) / 1024);
			$np->add_perfdata(label => "io_usage", value => $value1, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "io_read", value => $value2, uom => 'MB/s', threshold => $np->threshold);
			$np->add_perfdata(label => "io_write", value => $value3, uom => 'MB/s', threshold => $np->threshold);
			$res = OK;
			$output = "\"$vmname\" io usage=" . $value1 . " MB, read=" . $value2 . " MB/s, write=" . $value3 . " MB/s";
		}
	}

	return ($res, $output);
}

sub vm_runtime_info
{
	my ($vmname, $np, $subcommand) = @_;

	my $res = CRITICAL;
	my $output = 'HOST-VM RUNTIME Unknown error';
	my $runtime;
	my $vm_view = Vim::find_entity_view(view_type => 'VirtualMachine', filter => {name => $vmname}, properties => ['name', 'runtime', 'overallStatus', 'guest', 'configIssue']);
	die "VMware machine \"" . $vmname . "\" does not exist\n" if (!defined($vm_view));
	$runtime = $vm_view->runtime;

	if (defined($subcommand))
	{
		if ($subcommand eq "CON")
		{
			$output = "\"$vmname\" connection state=" . $runtime->connectionState->val;
			$res = OK if ($runtime->connectionState->val eq "connected");
		}
		elsif ($subcommand eq "CPU")
		{
			$output = "\"$vmname\" max cpu=" . $runtime->maxCpuUsage . " MHz";
			$res = OK;
		}
		elsif ($subcommand eq "MEM")
		{
			$output = "\"$vmname\" max mem=" . $runtime->maxMemoryUsage . " MB";
			$res = OK;
		}
		elsif ($subcommand eq "STATE")
		{
			my %vm_state_strings = ("poweredOn" => "UP", "poweredOff" => "DOWN", "suspended" => "SUSPENDED");
			my $state = $vm_state_strings{$runtime->powerState->val};
			$output = "\"$vmname\" run state=" . $state;
			$res = OK if ($state eq "UP");
		}
		elsif ($subcommand eq "STATUS")
		{
			my $status = $vm_view->overallStatus->val;
			$output = "\"$vmname\" overall status=" . $status;
			$res = check_health_state($status);
		}
		elsif ($subcommand eq "CONSOLECONNECTIONS")
		{
			$output = "\"$vmname\" console connections=" . $runtime->numMksConnections;
			$res = $np->check_threshold(check => $runtime->numMksConnections);
		}
		elsif ($subcommand eq "GUEST")
		{
			my %vm_guest_state = ("running" => "Running", "notRunning" => "Not running", "shuttingDown" => "Shutting down", "resetting" => "Resetting", "standby" => "Standby", "unknown" => "Unknown");
			my $state = $vm_guest_state{$vm_view->guest->guestState};
			$output = "\"$vmname\" guest state=" . $state;
			$res = OK if ($state eq "Running");
		}
		elsif ($subcommand eq "TOOLS")
		{
			my $tools_status;
			my $tools_runstate;
			my $tools_version;
			$tools_runstate = $vm_view->guest->toolsRunningStatus if (exists($vm_view->guest->{toolsRunningStatus}) && defined($vm_view->guest->toolsRunningStatus));
			$tools_version = $vm_view->guest->toolsVersionStatus if (exists($vm_view->guest->{toolsVersionStatus}) && defined($vm_view->guest->toolsVersionStatus));

			if (defined($tools_runstate) || defined($tools_version))
			{
				my %vm_tools_strings = ("guestToolsCurrent" => "Newest", "guestToolsNeedUpgrade" => "Old", "guestToolsNotInstalled" => "Not installed", "guestToolsUnmanaged" => "Unmanaged", "guestToolsExecutingScripts" => "Starting", "guestToolsNotRunning" => "Not running", "guestToolsRunning" => "Running");
				$tools_status = $vm_tools_strings{$tools_runstate} . "-" if (defined($tools_runstate));
				$tools_status .= $vm_tools_strings{$tools_version} . "-" if (defined($tools_version));
				chop($tools_status);
				$res = OK if (($tools_status eq "Running-Newest") || ($tools_status eq "Running-Unmanaged"));
			}
			else
			{
				my %vm_tools_strings = ("toolsNotInstalled" => "Not installed", "toolsNotRunning" => "Not running", "toolsOk" => "OK", "toolsOld" => "Old", "notDefined" => "Not defined");
				$tools_status = $vm_view->guest->toolsStatus;
				if (defined($tools_status))
				{
					$tools_status = $vm_tools_strings{$tools_status->val};
				}
				else
				{
					$tools_status = $vm_tools_strings{"notDefined"};
				}
				$res = OK if ($tools_status eq "OK");
			}
			$output = "\"$vmname\" tools status=" . $tools_status;
		}
		elsif ($subcommand eq "ISSUES")
		{
			my $issues = $vm_view->configIssue;

			if (defined($issues))
			{
				$output = "\"$vmname\": ";
				foreach (@$issues)
				{
					$output .= $_->fullFormattedMessage . "(caused by " . $_->userName . "); ";
				}
			}
			else
			{
				$res = OK;
				$output = "\"$vmname\" has no config issues";
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "HOST-VM RUNTIME - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		my %vm_state_strings = ("poweredOn" => "UP", "poweredOff" => "DOWN", "suspended" => "SUSPENDED");
		my %vm_tools_status = ("toolsNotInstalled" => "Not installed", "toolsNotRunning" => "Not running", "toolsOk" => "OK", "toolsOld" => "Old");
		my %vm_guest_state = ("running" => "Running", "notRunning" => "Not running", "shuttingDown" => "Shutting down", "resetting" => "Resetting", "standby" => "Standby", "unknown" => "Unknown");
		$res = OK;
		$output = "\"$vmname\" status=" . $vm_view->overallStatus->val . ", run state=" . $vm_state_strings{$runtime->powerState->val} . ", guest state=" . $vm_guest_state{$vm_view->guest->guestState} . ", max cpu=" . $runtime->maxCpuUsage . " MHz, max mem=" . $runtime->maxMemoryUsage . " MB, console connections=" . $runtime->numMksConnections . ", tools status=" . $vm_tools_status{$vm_view->guest->toolsStatus->val} . ", ";
		my $issues = $vm_view->configIssue;
		if (defined($issues))
		{
			$output .= @$issues . " config issue(s)";
		}
		else
		{
			$output .= "has no config issues";
		}
	}

	return ($res, $output);
}

#==========================================================================| DC |============================================================================#

sub return_cluster_DRS_recommendations {
	my ($np, $cluster_name) = @_;
	my $res = OK;
	my $output;
	my @clusters;

	if (defined($cluster_name))
	{
		my $cluster = Vim::find_entity_view(view_type => 'ClusterComputeResource', filter => $cluster_name, properties => ['name', 'recommendation']);
		die "cluster \"" . $$cluster_name{"name"} . "\" does not exist\n" if (!defined($cluster));
		push(@clusters, $cluster);
	}
	else
	{
		my $cluster = Vim::find_entity_views(view_type => 'ClusterComputeResource', properties => ['name', 'recommendation']);
		die "Runtime error\n" if (!defined($cluster));
		die "There are no clusters\n" if (!@$cluster);
		@clusters = @$cluster;
	}

	my $rec_count = 0;
	foreach my $cluster_view (@clusters)
	{
		my ($recommends) = $cluster_view->recommendation;
		if (defined($recommends))
		{
			my $value = 0;
			foreach my $recommend (@$recommends)
			{
				$value = $recommend->rating if ($recommend->rating > $value);
				$output .= "(" . $recommend->rating . ") " . $recommend->reason . " : " . $recommend->reasonText . "; ";
			}
			$rec_count += @$recommends;
			$res = $np->check_threshold(check => $value);
		}
	}

	if (defined($output))
	{
		$output = "Recommendations:" . $output;
	}
	else
	{
		$output = "No recommendations";
	}

	$np->add_perfdata(label => "recommendations", value => $rec_count);

	return ($res, $output);
}

sub dc_cpu_info
{
	my ($np, $subcommand, $addopts) = @_;

	my $res = CRITICAL;
	my $output = 'DC CPU Unknown error';

	my $quickStats;
	$quickStats = $addopts =~ m/(^|\s|\t|,)\Qquickstats\E($|\s|\t|,)/ if (defined($addopts));

	if (defined($subcommand))
	{
		if ($subcommand eq "USAGE")
		{
			my $value;
			if (defined($quickStats))
			{
				my $host_views = Vim::find_entity_views(view_type => 'HostSystem', properties => ['name', 'summary.hardware', 'summary.quickStats']);
				die "Runtime error\n" if (!defined($host_views));
				die "Datacenter does not contain any hosts\n" if (!@$host_views);
				foreach my $host_view (@$host_views)
				{
					$values = $host_view->get_property('summary.quickStats');
					my $hardinfo = $host_view->get_property('summary.hardware');
					die "Can not retrieve required information from Host '" . $host_view->name . "'\n" if !(exists($values->{overallCpuUsage}) && defined($hardinfo));
					$value += $values->overallCpuUsage / ($hardinfo->numCpuCores * $hardinfo->cpuMhz) * 100;
				}
				$value = simplify_number($value / @$host_views);
			}
			else
			{
				$values = return_dc_performance_values('cpu', ('usage.average'));
				grep($value += convert_number($$_[0]->value) * 0.01, @$values) if (defined($values));
				$value = simplify_number($value / @$values) if (defined($value));
			}
			if (defined($value))
			{
				$np->add_perfdata(label => "cpu_usage", value => $value, uom => '%', threshold => $np->threshold);
				$output = "cpu usage=" . $value . " %"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "USAGEMHZ")
		{
			my $value;
			if (defined($quickStats))
			{
				my $host_views = Vim::find_entity_views(view_type => 'HostSystem', properties => ['name', 'summary.quickStats']);
				die "Runtime error\n" if (!defined($host_views));
				die "Datacenter does not contain any hosts\n" if (!@$host_views);
				foreach my $host_view (@$host_views)
				{
					$values = $host_view->get_property('summary.quickStats');
					die "Can not retrieve required information from Host '" . $host_view->name . "'\n" if !(exists($values->{overallCpuUsage}));
					$value += $values->overallCpuUsage;
				}
				$value = simplify_number($value);
			}
			else
			{
				$values = return_dc_performance_values('cpu', ('usagemhz.average'));
				grep($value += convert_number($$_[0]->value), @$values);
				$value = simplify_number($value) if (defined($value));
			}
			if (defined($value))
			{
				$np->add_perfdata(label => "cpu_usagemhz", value => $value, uom => 'Mhz', threshold => $np->threshold);
				$output = "cpu usagemhz=" . $value . " MHz";
				$res = $np->check_threshold(check => $value);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "DC CPU - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		my $value1 = 0;
		my $value2 = 0;
		if (defined($quickStats))
		{
			my $host_views = Vim::find_entity_views(view_type => 'HostSystem', properties => ['name', 'summary.hardware', 'summary.quickStats']);
			die "Runtime error\n" if (!defined($host_views));
			die "Datacenter does not contain any hosts\n" if (!@$host_views);
			foreach my $host_view (@$host_views)
			{
				$values = $host_view->get_property('summary.quickStats');
				my $hardinfo = $host_view->get_property('summary.hardware');
				die "Can not retrieve required information from Host '" . $host_view->name . "'\n" if !(exists($values->{overallCpuUsage}) && defined($hardinfo));
				$value1 += $values->overallCpuUsage;
				$value2 += $values->overallCpuUsage / ($hardinfo->numCpuCores * $hardinfo->cpuMhz) * 100;
			}
			$value1 = simplify_number($value1);
			$value2 = simplify_number($value2 / @$host_views);
		}
		else
		{
			$values = return_dc_performance_values('cpu', ('usagemhz.average', 'usage.average'));
			grep($value1 += convert_number($$_[0]->value), @$values);
			grep($value2 += convert_number($$_[1]->value) * 0.01, @$values);
			$value1 = simplify_number($value1);
			$value2 = simplify_number($value2 / @$values);
		}
		if (defined($value1) && defined($value2))
		{
			$np->add_perfdata(label => "cpu_usagemhz", value => $value1, uom => 'Mhz', threshold => $np->threshold);
			$np->add_perfdata(label => "cpu_usage", value => $value2, uom => '%', threshold => $np->threshold);
			$res = OK;
			$output = "cpu usage=" . $value1 . " MHz (" . $value2 . "%)";
		}
	}

	return ($res, $output);
}

sub dc_mem_info
{
	my ($np, $subcommand, $addopts) = @_;

	my $res = CRITICAL;
	my $output = 'DC MEM Unknown error';

	my $quickStats;
	$quickStats = $addopts =~ m/(^|\s|\t|,)\Qquickstats\E($|\s|\t|,)/ if (defined($addopts));

	if (defined($subcommand))
	{
		if ($subcommand eq "USAGE")
		{
			my $value;
			if (defined($quickStats))
			{
				my $host_views = Vim::find_entity_views(view_type => 'HostSystem', properties => ['name', 'summary.hardware', 'summary.quickStats']);
				die "Runtime error\n" if (!defined($host_views));
				die "Datacenter does not contain any hosts\n" if (!@$host_views);
				foreach my $host_view (@$host_views)
				{
					$values = $host_view->get_property('summary.quickStats');
					my $hardinfo = $host_view->get_property('summary.hardware');
					die "Can not retrieve required information from Host '" . $host_view->name . "'\n" if !(exists($values->{overallMemoryUsage}) && defined($hardinfo));
					$value += $values->overallMemoryUsage / ($hardinfo->memorySize / 1024 / 1024) * 100;
				}
				$value = simplify_number($value);
			}
			else
			{
				$values = return_dc_performance_values('mem', ('usage.average'));
				grep($value += convert_number($$_[0]->value) * 0.01, @$values);
				$value = simplify_number($value / @$values) if (defined($value));
			}
			if (defined($value))
			{
				$np->add_perfdata(label => "mem_usage", value => $value, uom => '%', threshold => $np->threshold);
				$output = "mem usage=" . $value . " %"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "USAGEMB")
		{
			my $value;
			if (defined($quickStats))
			{
				my $host_views = Vim::find_entity_views(view_type => 'HostSystem', properties => ['name', 'summary.quickStats']);
				die "Runtime error\n" if (!defined($host_views));
				die "Datacenter does not contain any hosts\n" if (!@$host_views);
				foreach my $host_view (@$host_views)
				{
					$values = $host_view->get_property('summary.quickStats');
					die "Can not retrieve required information from Host '" . $host_view->name . "'\n" if !(exists($values->{overallMemoryUsage}));
					$value += $values->overallMemoryUsage;
				}
				$value = simplify_number($value);
			}
			else
			{
				$values = return_dc_performance_values('mem', ('consumed.average'));
				grep($value += convert_number($$_[0]->value) / 1024, @$values);
				$value = simplify_number($value) if (defined($value));
			}
			if (defined($value))
			{
				$np->add_perfdata(label => "mem_usagemb", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "mem usage=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "SWAP")
		{
			$values = return_dc_performance_values('mem', ('swapused.average'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += convert_number($$_[0]->value) / 1024, @$values);
				$value = simplify_number($value);
				$np->add_perfdata(label => "mem_swap", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "swap usage=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "OVERHEAD")
		{
			$values = return_dc_performance_values('mem', ('overhead.average'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += convert_number($$_[0]->value) / 1024, @$values);
				$value = simplify_number($value);
				$np->add_perfdata(label => "mem_overhead", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "overhead=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "OVERALL")
		{
			$values = return_dc_performance_values('mem', ('consumed.average', 'overhead.average'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += (convert_number($$_[0]->value) + convert_number($$_[1]->value)) / 1024, @$values);
				$value = simplify_number($value);
				$np->add_perfdata(label => "mem_overall", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "overall=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "MEMCTL")
		{
			$values = return_dc_performance_values('mem', ('vmmemctl.average'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += convert_number($$_[0]->value) / 1024, @$values);
				$value = simplify_number($value);
				$np->add_perfdata(label => "mem_memctl", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "memctl=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "DC MEM - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		$values = return_dc_performance_values('mem', ('consumed.average', 'usage.average', 'overhead.average', 'swapused.average', 'vmmemctl.average'));
		if (defined($values))
		{
			my $value1 = 0;
			my $value2 = 0;
			my $value3 = 0;
			my $value4 = 0;
			my $value5 = 0;
			grep($value1 += convert_number($$_[0]->value) / 1024, @$values);
			grep($value2 += convert_number($$_[1]->value) * 0.01, @$values);
			grep($value3 += convert_number($$_[2]->value) / 1024, @$values);
			grep($value4 += convert_number($$_[3]->value) / 1024, @$values);
			grep($value5 += convert_number($$_[4]->value) / 1024, @$values);
			$value1 = simplify_number($value1);
			$value2 = simplify_number($value2 / @$values);
			$value3 = simplify_number($value3);
			$value4 = simplify_number($value4);
			$value5 = simplify_number($value5);
			$np->add_perfdata(label => "mem_usagemb", value => $value1, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_usage", value => $value2, uom => '%', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_overhead", value => $value3, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_swap", value => $value4, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_memctl", value => $value5, uom => 'MB', threshold => $np->threshold);
			$res = OK;
			$output = "mem usage=" . $value1 . " MB (" . $value2 . "%), overhead=" . $value3 . " MB, swapped=" . $value4 . " MB, memctl=" . $value5 . " MB";
		}
	}

	return ($res, $output);
}

sub dc_net_info
{
	my ($np, $subcommand) = @_;

	my $res = CRITICAL;
	my $output = 'DC NET Unknown error';

	if (defined($subcommand))
	{
		if ($subcommand eq "USAGE")
		{
			$values = return_dc_performance_values('net', ('usage.average:*'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += convert_number($$_[0]->value), @$values);
				$value = simplify_number($value);
				$np->add_perfdata(label => "net_usage", value => $value, uom => 'KBps', threshold => $np->threshold);
				$output = "net usage=" . $value . " KBps"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "RECEIVE")
		{
			$values = return_dc_performance_values('net', ('received.average:*'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += convert_number($$_[0]->value), @$values);
				$value = simplify_number($value);
				$np->add_perfdata(label => "net_receive", value => $value, uom => 'KBps', threshold => $np->threshold);
				$output = "net receive=" . $value . " KBps"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "SEND")
		{
			$values = return_dc_performance_values('net', ('transmitted.average:*'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += convert_number($$_[0]->value), @$values);
				$value = simplify_number($value);
				$np->add_perfdata(label => "net_send", value => $value, uom => 'KBps', threshold => $np->threshold);
				$output = "net send=" . $value . " KBps"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "DC NET - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		$values = return_dc_performance_values('net', ('received.average:*', 'transmitted.average:*'));
		if (defined($values))
		{
			my $value1 = 0;
			my $value2 = 0;
			grep($value1 += convert_number($$_[0]->value), @$values);
			grep($value2 += convert_number($$_[1]->value), @$values);
			$value1 = simplify_number($value1);
			$value2 = simplify_number($value2);
			$np->add_perfdata(label => "net_receive", value => $value1, uom => 'KBps', threshold => $np->threshold);
			$np->add_perfdata(label => "net_send", value => $value2, uom => 'KBps', threshold => $np->threshold);
			$res = OK;
			$output = "net receive=" . $value1 . " KBps, send=" . $value2 . " KBps";
		}
	}

	return ($res, $output);
}

sub dc_list_vm_volumes_info
{
	my ($np, $subcommand, $blacklist, $perc, $addopts) = @_;

	my $host_views = Vim::find_entity_views(view_type => 'HostSystem', properties => ['name', 'datastore']);
	die "Runtime error\n" if (!defined($host_views));
	die "Datacenter does not contain any hosts\n" if (!@$host_views);

	my @datastores;
	foreach my $host (@$host_views)
	{
		push(@datastores, @{$host->datastore});
	}
	return datastore_volumes_info(\@datastores, $np, $subcommand, $blacklist, $perc, $addopts);
}

sub dc_disk_io_info
{
	my ($np, $subcommand) = @_;

	my $res = CRITICAL;
	my $output = 'DC IO Unknown error';

	if (defined($subcommand))
	{
		if ($subcommand eq "ABORTED")
		{
			$values = return_dc_performance_values('disk', ('commandsAborted.summation:*'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += convert_number($$_[0]->value), @$values);
				$value = simplify_number($value, 0);
				$np->add_perfdata(label => "io_aborted", value => $value, threshold => $np->threshold);
				$output = "io commands aborted=" . $value;
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "RESETS")
		{
			$values = return_dc_performance_values('disk', ('busResets.summation:*'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += convert_number($$_[0]->value), @$values);
				$value = simplify_number($value, 0);
				$np->add_perfdata(label => "io_busresets", value => $value, threshold => $np->threshold);
				$output = "io bus resets=" . $value;
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "READ")
		{
			$values = return_dc_performance_values('disk', ('totalReadLatency.average:*'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += convert_number($$_[0]->value), @$values);
				$value = simplify_number($value, 0);
				$np->add_perfdata(label => "io_read", value => $value, uom => 'ms', threshold => $np->threshold);
				$output = "io read latency=" . $value . " ms";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "WRITE")
		{
			$values = return_dc_performance_values('disk', ('totalWriteLatency.average:*'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += convert_number($$_[0]->value), @$values);
				$value = simplify_number($value, 0);
				$np->add_perfdata(label => "io_write", value => $value, uom => 'ms', threshold => $np->threshold);
				$output = "io write latency=" . $value . " ms";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "KERNEL")
		{
			$values = return_dc_performance_values('disk', ('kernelLatency.average:*'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += convert_number($$_[0]->value), @$values);
				$value = simplify_number($value, 0);
				$np->add_perfdata(label => "io_kernel", value => $value, uom => 'ms', threshold => $np->threshold);
				$output = "io kernel latency=" . $value . " ms";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "DEVICE")
		{
			$values = return_dc_performance_values('disk', ('deviceLatency.average:*'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += convert_number($$_[0]->value), @$values);
				$value = simplify_number($value, 0);
				$np->add_perfdata(label => "io_device", value => $value, uom => 'ms', threshold => $np->threshold);
				$output = "io device latency=" . $value . " ms";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "QUEUE")
		{
			$values = return_dc_performance_values('disk', ('queueLatency.average:*'));
			if (defined($values))
			{
				my $value = 0;
				grep($value += convert_number($$_[0]->value), @$values);
				$value = simplify_number($value, 0);
				$np->add_perfdata(label => "io_queue", value => $value, uom => 'ms', threshold => $np->threshold);
				$output = "io queue latency=" . $value . " ms";
				$res = $np->check_threshold(check => $value);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "DC IO - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		$values = return_dc_performance_values('disk', ('commandsAborted.summation:*', 'busResets.summation:*', 'totalReadLatency.average:*', 'totalWriteLatency.average:*', 'kernelLatency.average:*', 'deviceLatency.average:*', 'queueLatency.average:*'));
		if (defined($values))
		{
			my $value1 = 0;
			my $value2 = 0;
			my $value3 = 0;
			my $value4 = 0;
			my $value5 = 0;
			my $value6 = 0;
			my $value7 = 0;
			grep($value1 += convert_number($$_[0]->value), @$values);
			grep($value2 += convert_number($$_[1]->value), @$values);
			grep($value3 += convert_number($$_[2]->value), @$values);
			grep($value4 += convert_number($$_[3]->value), @$values);
			grep($value5 += convert_number($$_[4]->value), @$values);
			grep($value6 += convert_number($$_[5]->value), @$values);
			grep($value7 += convert_number($$_[6]->value), @$values);
			$value1 = simplify_number($value1, 0);
			$value2 = simplify_number($value2, 0);
			$value3 = simplify_number($value3, 0);
			$value4 = simplify_number($value4, 0);
			$value5 = simplify_number($value5, 0);
			$value6 = simplify_number($value6, 0);
			$value7 = simplify_number($value7, 0);
			$np->add_perfdata(label => "io_aborted", value => $value1, threshold => $np->threshold);
			$np->add_perfdata(label => "io_busresets", value => $value2, threshold => $np->threshold);
			$np->add_perfdata(label => "io_read", value => $value3, uom => 'ms', threshold => $np->threshold);
			$np->add_perfdata(label => "io_write", value => $value4, uom => 'ms', threshold => $np->threshold);
			$np->add_perfdata(label => "io_kernel", value => $value5, uom => 'ms', threshold => $np->threshold);
			$np->add_perfdata(label => "io_device", value => $value6, uom => 'ms', threshold => $np->threshold);
			$np->add_perfdata(label => "io_queue", value => $value7, uom => 'ms', threshold => $np->threshold);
			$res = OK;
			$output = "io commands aborted=" . $value1 . ", io bus resets=" . $value2 . ", io read latency=" . $value3 . " ms, write latency=" . $value4 . " ms, kernel latency=" . $value5 . " ms, device latency=" . $value6 . " ms, queue latency=" . $value7 ." ms";
		}
	}

	return ($res, $output);
}

sub dc_runtime_info
{
	my ($np, $subcommand, $blacklist) = @_;

	my $res = CRITICAL;
	my $output = 'DC RUNTIME Unknown error';
	my $runtime;
	my $dc_view = Vim::find_entity_view(view_type => 'Datacenter', properties => ['name', 'overallStatus', 'configIssue']);

	die "There are no Datacenter\n" if (!defined($dc_view));

	if (defined($subcommand))
	{
		if (($subcommand eq "LIST") || ($subcommand eq "LISTVM"))
		{
			my %vm_state_strings = ("poweredOn" => "UP", "poweredOff" => "DOWN", "suspended" => "SUSPENDED");
			my $vm_views = Vim::find_entity_views(view_type => 'VirtualMachine', properties => ['name', 'runtime']);
			die "Runtime error\n" if (!defined($vm_views));
			die "There are no VMs.\n" if (!@$vm_views);
			my $up = 0;
			$output = '';

			foreach my $vm (@$vm_views) {
				my $vm_state = $vm_state_strings{$vm->runtime->powerState->val};
				if ($vm_state eq "UP")
				{
					$up++;
					$output .= $vm->name . "(UP), ";
				}
				else
				{
					$output = $vm->name . "(" . $vm_state . "), " . $output;
				}
			}

			chop($output);
			chop($output);
			$res = OK;
			$output = $up . "/" . @$vm_views . " VMs up: " . $output;
			$np->add_perfdata(label => "vmcount", value => $up, uom => 'units', threshold => $np->threshold);
			$res = $np->check_threshold(check => $up) if (defined($np->threshold));
		}
		elsif ($subcommand eq "LISTHOST")
		{
			my %host_state_strings = ("unknown" => "UNKNOWN", "poweredOn" => "UP", "poweredOff" => "DOWN", "suspended" => "SUSPENDED", "standBy" => "STANDBY", "MaintenanceMode" => "Maintenance Mode");
			my $host_views = Vim::find_entity_views(view_type => 'HostSystem', properties => ['name', 'runtime.powerState']);
			die "Runtime error\n" if (!defined($host_views));
			die "There are no VMs.\n" if (!@$host_views);
			my $up = 0;
			my $unknown = 0;
			$output = '';

			foreach my $host (@$host_views) {
				$host->update_view_data(['name', 'runtime.powerState']);
				my $host_state = $host_state_strings{$host->get_property('runtime.powerState')->val};
				$unknown += $host_state eq "UNKNOWN";
				if ($host_state eq "UP") {
					$up++;
					$output .= $host->name . "(UP), ";
				}
				else
				{
					$output = $host->name . "(" . $host_state . "), " . $output;
				}
			}

			chop($output);
			chop($output);
			$res = OK;
			$output = $up . "/" . @$host_views . " Hosts up: " . $output;
			$np->add_perfdata(label => "hostcount", value => $up, uom => 'units', threshold => $np->threshold);
			$res = $np->check_threshold(check => $up) if (defined($np->threshold));
			$res = UNKNOWN if ($res == OK && $unknown);
		}
		elsif ($subcommand eq "LISTCLUSTER")
		{
			my %cluster_state_strings = ("gray" => "UNKNOWN", "green" => "GREEN", "red" => "RED", "yellow" => "YELLOW");
			my $cluster_views = Vim::find_entity_views(view_type => 'ClusterComputeResource', properties => ['name', 'overallStatus']);
			die "Runtime error\n" if (!defined($cluster_views));
			die "There are no Clusters.\n" if (!@$cluster_views);
			my $green = 0;
			my $unknown = 0;
			$output = '';

			foreach my $cluster (@$cluster_views) {
				$cluster->update_view_data(['name', 'overallStatus']);
				my $cluster_state = $cluster_state_strings{$cluster->get_property('overallStatus')->val};
				$unknown += $cluster_state eq "UNKNOWN";
				if ($cluster_state eq "GREEN") {
					$green++;
					$output .= $cluster->name . "(GREEN), ";
				}
				else
				{
					$output = $cluster->name . "(" . $cluster_state . "), " . $output;
				}
			}

			chop($output);
			chop($output);
			$res = OK;
			$output = $green . "/" . @$cluster_views . " Cluster green: " . $output;
			$np->add_perfdata(label => "clustercount", value => $green, uom => 'units', threshold => $np->threshold);
			$res = $np->check_threshold(check => $green) if (defined($np->threshold));
			$res = UNKNOWN if ($res == OK && $unknown);
		}
		elsif ($subcommand eq "TOOLS")
		{
			my $vm_views = Vim::find_entity_views(view_type => 'VirtualMachine', properties => ['name', 'runtime.powerState', 'summary.guest']);
			die "Runtime error\n" if (!defined($vm_views));
			die "There are no VMs.\n" if (!@$vm_views);
			$output = '';
			my $tools_ok = 0;
			my $vms_up = 0;
			foreach my $vm (@$vm_views) {
				my $name = $vm->name;
				if (defined($blacklist))
				{
					next if ($blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/);
				}
				if ($vm->get_property('runtime.powerState')->val eq "poweredOn")
				{
					my $vm_guest = $vm->get_property('summary.guest');
					my $tools_status;
					my $tools_runstate;
					my $tools_version;
					$tools_runstate = $vm_guest->toolsRunningStatus if (exists($vm_guest->{toolsRunningStatus}) && defined($vm_guest->toolsRunningStatus));
					$tools_version = $vm_guest->toolsVersionStatus if (exists($vm_guest->{toolsVersionStatus}) && defined($vm_guest->toolsVersionStatus));

					$vms_up++;
					if (defined($tools_runstate) || defined($tools_version))
					{
						my %vm_tools_strings = ("guestToolsCurrent" => "Newest", "guestToolsNeedUpgrade" => "Old", "guestToolsNotInstalled" => "Not installed", "guestToolsUnmanaged" => "Unmanaged", "guestToolsExecutingScripts" => "Starting", "guestToolsNotRunning" => "Not running", "guestToolsRunning" => "Running");
						$tools_status = $vm_tools_strings{$tools_runstate} . "-" if (defined($tools_runstate));
						$tools_status .= $vm_tools_strings{$tools_version} . "-" if (defined($tools_version));
						chop($tools_status);
						if ($tools_status eq "Running-Newest")
						{
							$output .= $name . "(Running-Newest), ";
							$tools_ok++;
						}
						else
						{
							$output = $name . "(" . $tools_status . "), " . $output;
						}
					}
					else
					{
						my %vm_tools_strings = ("toolsNotInstalled" => "Not installed", "toolsNotRunning" => "Not running", "toolsOk" => "OK", "toolsOld" => "Old", "notDefined" => "Not defined");
						$tools_status = $vm_guest->toolsStatus;
						if (defined($tools_status))
						{
							$tools_status = $vm_tools_strings{$tools_status->val};
							if ($tools_status eq "OK")
							{
								$output .= $name . "(OK), ";
								$tools_ok++;
							}
							else
							{
								$output = $name . "(" . $tools_status . "), " . $output;
							}
						}
						else
						{
							$output = $name . "(" . $vm_tools_strings{"notDefined"} . "), " . $output;
						}
					}
				}
			}
			chop($output);
			chop($output);
			if ($vms_up)
			{
				$tools_ok /= $vms_up / 100;
			}
			else
			{
				$tools_ok = 100;
			}
			$res = $np->check_threshold(check => $tools_ok) if (defined($np->threshold));
			$np->add_perfdata(label => "toolsok", value => $tools_ok, uom => '%', threshold => $np->threshold);
		}
		elsif ($subcommand eq "STATUS")
		{
			if (defined($dc_view->overallStatus))
			{
				my $status = $dc_view->overallStatus->val;
				$output = "overall status=" . $status;
				$res = check_health_state($status);
			}
			else
			{
				$output = "Insufficient rights to access status info on the DC\n";
				$res = WARNING;
			}
		}
		elsif ($subcommand eq "ISSUES")
		{
			my $issues = $dc_view->configIssue;
			my $issues_count = 0;

			$output = '';
			if (defined($issues))
			{
				foreach (@$issues)
				{
					if (defined($blacklist))
					{
						my $name = ref($_);
						next if ($blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/);
					}
					$output .= format_issue($_) . "; ";
					$issues_count++;
				}
			}

			if ($output eq '')
			{
				$res = OK;
				$output = 'No config issues';
			}
			$np->add_perfdata(label => "issues", value => $issues_count);
		}
		else
		{
			$res = CRITICAL;
			$output = "HOST RUNTIME - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		my %host_maintenance_state = (0 => "no", 1 => "yes");
		my $vm_views = Vim::find_entity_views(view_type => 'VirtualMachine', begin_entity => $dc_view, properties => ['name', 'runtime.powerState']);
		die "Runtime error\n" if (!defined($vm_views));
		my $up = 0;

		if (@$vm_views)
		{
			foreach my $vm (@$vm_views) {
				$up += $vm->get_property('runtime.powerState')->val eq "poweredOn";
			}
			$output = $up . "/" . @$vm_views . " VMs up, ";
		}
		else
		{
			$output = "No VMs installed, ";
		}
		$np->add_perfdata(label => "vmcount", value => $up, uom => 'units', threshold => $np->threshold);

		my $host_views = Vim::find_entity_views(view_type => 'HostSystem', properties => ['name', 'runtime.powerState']);
		die "Runtime error\n" if (!defined($host_views));
		$up = 0;

		if (@$host_views)
		{
			foreach my $host (@$host_views) {
				$up += $host->get_property('runtime.powerState')->val eq "poweredOn"
			}
			$output .= $up . "/" . @$host_views . " Hosts up, ";
		}
		else
		{
			$output .= "there are no hosts, ";
		}
		$np->add_perfdata(label => "hostcount", value => $up, uom => 'units');

		$res = OK;
		$output .= "overall status=" . $dc_view->overallStatus->val . ", " if (defined($dc_view->overallStatus));
		my $issues = $dc_view->configIssue;
		if (defined($issues))
		{
			$output .= @$issues . " config issue(s)";
			$np->add_perfdata(label => "config_issues", value => "" . @$issues);
		}
		else
		{
			$output .= "no config issues";
			$np->add_perfdata(label => "config_issues", value => 0);
		}
	}

	return ($res, $output);
}

#=====================================================================| Cluster |============================================================================#

sub cluster_cpu_info
{
	my ($cluster, $np, $subcommand) = @_;

	my $res = CRITICAL;
	my $output = 'CLUSTER CPU Unknown error';

	if (defined($subcommand))
	{
		if ($subcommand eq "USAGE")
		{
			$values = return_cluster_performance_values($cluster, 'cpu', ('usage.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) * 0.01);
				$np->add_perfdata(label => "cpu_usage", value => $value, uom => '%', threshold => $np->threshold);
				$output = "cpu usage=" . $value . " %"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "USAGEMHZ")
		{
			$values = return_cluster_performance_values($cluster, 'cpu', ('usagemhz.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value));
				$np->add_perfdata(label => "cpu_usagemhz", value => $value, uom => 'Mhz', threshold => $np->threshold);
				$output = "cpu usagemhz=" . $value . " MHz";
				$res = $np->check_threshold(check => $value);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "CLUSTER CPU - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		$values = return_cluster_performance_values($cluster, 'cpu', ('usagemhz.average', 'usage.average'));
		if (defined($values))
		{
			my $value1 = simplify_number(convert_number($$values[0][0]->value));
			my $value2 = simplify_number(convert_number($$values[0][1]->value) * 0.01);
			$np->add_perfdata(label => "cpu_usagemhz", value => $value1, uom => 'Mhz', threshold => $np->threshold);
			$np->add_perfdata(label => "cpu_usage", value => $value2, uom => '%', threshold => $np->threshold);
			$res = OK;
			$output = "cpu usage=" . $value1 . " MHz (" . $value2 . "%)";
		}
	}

	return ($res, $output);
}

sub cluster_mem_info
{
	my ($cluster, $np, $subcommand, $addopts) = @_;

	my $res = CRITICAL;
	my $output = 'CLUSTER MEM Unknown error';

	my $outputlist;
	$outputlist = $addopts =~ m/(^|\s|\t|,)\Qlistvm\E($|\s|\t|,)/ if (defined($addopts));

	if (defined($subcommand))
	{
		if ($subcommand eq "USAGE")
		{
			$values = return_cluster_performance_values($cluster, 'mem', ('usage.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) * 0.01);
				$np->add_perfdata(label => "mem_usage", value => $value, uom => '%', threshold => $np->threshold);
				$output = "mem usage=" . $value . " %"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "USAGEMB")
		{
			$values = return_cluster_performance_values($cluster, 'mem', ('consumed.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "mem_usagemb", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "mem usage=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "SWAP")
		{
			my $cluster_view;
			($cluster_view, $values) = return_cluster_performance_values($cluster, 'mem', ('swapused.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "mem_swap", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "swap usage=" . $value . " MB: ";
				$res = $np->check_threshold(check => $value);
				if ($res != OK && $outputlist)
				{
					my $vm_views = Vim::find_entity_views(view_type => 'VirtualMachine', begin_entity => $$cluster_view[0], properties => ['name', 'runtime.powerState']);
					die "Runtime error\n" if (!defined($vm_views));
					die "There are no VMs.\n" if (!@$vm_views);
					my @vms = ();
					foreach my $vm (@$vm_views)
					{
						push(@vms, $vm) if ($vm->get_property('runtime.powerState')->val eq "poweredOn");
					}
					$values = generic_performance_values(\@vms, undef, 'mem', ('swapped.average'));
					if (defined($values))
					{
						foreach my $index (0..@vms-1) {
							my $value = simplify_number(convert_number($$values[$index][0]->value) / 1024);
							$output .= $vms[$index]->name . " (" . $value . "MB), " if ($value > 0);
						}
					}
				}
				chop($output);
				chop($output);
			}
		}
		elsif ($subcommand eq "MEMCTL")
		{
			my $cluster_view;
			($cluster_view, $values) = return_cluster_performance_values($cluster, 'mem', ('vmmemctl.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "mem_memctl", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "memctl=" . $value . " MB: ";
				$res = $np->check_threshold(check => $value);
				if ($res != OK && $outputlist)
				{
					my $vm_views = Vim::find_entity_views(view_type => 'VirtualMachine', begin_entity => $$cluster_view[0], properties => ['name', 'runtime.powerState']);
					die "Runtime error\n" if (!defined($vm_views));
					die "There are no VMs.\n" if (!@$vm_views);
					my @vms = ();
					foreach my $vm (@$vm_views)
					{
						push(@vms, $vm) if ($vm->get_property('runtime.powerState')->val eq "poweredOn");
					}
					$values = generic_performance_values(\@vms, undef, 'mem', ('vmmemctl.average'));
					if (defined($values))
					{
						foreach my $index (0..@vms-1) {
							my $value = simplify_number(convert_number($$values[$index][0]->value) / 1024);
							$output .= $vms[$index]->name . " (" . $value . "MB), " if ($value > 0);
						}
					}
				}
				chop($output);
				chop($output);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "CLUSTER MEM - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		$values = return_cluster_performance_values($cluster, 'mem', ('consumed.average', 'usage.average', 'overhead.average', 'swapused.average', 'vmmemctl.average'));
		if (defined($values))
		{
			my $value1 = simplify_number(convert_number($$values[0][0]->value) / 1024);
			my $value2 = simplify_number(convert_number($$values[0][1]->value) * 0.01);
			my $value3 = simplify_number(convert_number($$values[0][2]->value) / 1024);
			my $value4 = simplify_number(convert_number($$values[0][3]->value) / 1024);
			my $value5 = simplify_number(convert_number($$values[0][4]->value) / 1024);
			$np->add_perfdata(label => "mem_usagemb", value => $value1, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_usage", value => $value2, uom => '%', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_overhead", value => $value3, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_swap", value => $value4, uom => 'MB', threshold => $np->threshold);
			$np->add_perfdata(label => "mem_memctl", value => $value5, uom => 'MB', threshold => $np->threshold);
			$res = OK;
			$output = "mem usage=" . $value1 . " MB (" . $value2 . "%), overhead=" . $value3 . " MB, swapped=" . $value4 . " MB, memctl=" . $value5 . " MB";
		}
	}

	return ($res, $output);
}

sub cluster_cluster_info
{
	my ($cluster, $np, $subcommand) = @_;
	 
	my $res = CRITICAL;
	my $output = 'CLUSTER clusterServices Unknown error';
	
	if (defined($subcommand))
	{
		if ($subcommand eq "EFFECTIVECPU")
		{
			$values = return_cluster_performance_values($cluster, 'clusterServices', ('effectivecpu.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number(get_val_from_list($$values[0][0]->value)) * 0.01);
				$np->add_perfdata(label => "effective cpu", value => $value, uom => 'Mhz', threshold => $np->threshold);
				$output = "effective cpu=" . $value . " %"; 
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "EFFECTIVEMEM")
		{
			$values = return_cluster_performance_values($cluster, 'clusterServices', ('effectivemem.average'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "effectivemem", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "effective mem=" . $value . " MB";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "FAILOVER")
		{
			$values = return_cluster_performance_values($cluster, 'clusterServices', ('failover.latest:*'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value) / 1024);
				$np->add_perfdata(label => "failover", value => $value, uom => 'MB', threshold => $np->threshold);
				$output = "failover=" . $value . " ";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "CPUFAIRNESS")
		{
			$values = return_cluster_performance_values($cluster, 'clusterServices', ('cpufairness.latest'));
			if (defined($values))
			{
				my $value = simplify_number(convert_number($$values[0][0]->value));
				$np->add_perfdata(label => "cpufairness", value => $value, uom => '%', threshold => $np->threshold);
				$output = "cpufairness=" . $value . " %";
				$res = $np->check_threshold(check => $value);
			}
		}
		elsif ($subcommand eq "MEMFAIRNESS")
		{
			$values = return_cluster_performance_values($cluster, 'clusterServices', ('memfairness.latest'));
			if (defined($values))
			{
				my $value = simplify_number((convert_number($$values[0][0]->value)));
				$np->add_perfdata(label => "memfairness", value =>  $value, uom => '%', threshold => $np->threshold);
				$output = "memfairness=" . $value . " %";
				$res = $np->check_threshold(check => $value);
			}
		}
		else
		{
			$res = CRITICAL;
			$output = "CLUSTER clusterServices - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		$values = return_cluster_performance_values($cluster, 'clusterServices', ('effectivecpu.average', 'effectivemem.average'));
		if (defined($values))
		{
			my $value1 = simplify_number(convert_number($$values[0][0]->value));
			my $value2 = simplify_number(convert_number($$values[0][1]->value) / 1024);
			$np->add_perfdata(label => "effective cpu", value => $value1, uom => 'Mhz', threshold => $np->threshold);
			$np->add_perfdata(label => "effective mem", value => $value2, uom => 'MB', threshold => $np->threshold);
			$res = OK;
			$output = "effective cpu=" . $value1 . " Mhz, effective Mem=" . $value2 . " MB";
		}
	}

	return ($res, $output);
}

sub cluster_runtime_info
{
	my ($cluster, $np, $subcommand, $blacklist) = @_;

	my $res = CRITICAL;
	my $output = 'CLUSTER RUNTIME Unknown error';
	my $runtime;
	my $cluster_view = Vim::find_entity_view(view_type => 'ClusterComputeResource', filter => { name => "$cluster" }, properties => ['name', 'overallStatus', 'configIssue']);
	die "Cluster \"" . $$cluster{"name"} . "\" does not exist\n" if (!defined($cluster_view));
	$cluster_view->update_view_data();

	if (defined($subcommand))
	{
		if (($subcommand eq "LIST") || ($subcommand eq "LISTVM"))
		{
			my %vm_state_strings = ("poweredOn" => "UP", "poweredOff" => "DOWN", "suspended" => "SUSPENDED");
			my $vm_views = Vim::find_entity_views(view_type => 'VirtualMachine', begin_entity => $cluster_view, properties => ['name', 'runtime']);
			die "Runtime error\n" if (!defined($vm_views));
			die "There are no VMs.\n" if (!defined($vm_views));
			my $up = 0;
			$output = '';

			foreach my $vm (@$vm_views)
			{
				my $vm_state = $vm_state_strings{$vm->runtime->powerState->val};
				if ($vm_state eq "UP")
				{
					$up++;
					$output .= $vm->name . "(OK), ";
				}
				else
				{
					$output = $vm->name . "(" . $vm_state . "), " . $output;
				}
			}

			chop($output);
			chop($output);
			$res = OK;
			$output = $up .  "/" . @$vm_views . " VMs up: " . $output;
			$np->add_perfdata(label => "vmcount", value => $up, uom => 'units', threshold => $np->threshold);
			$res = $np->check_threshold(check => $up) if (defined($np->threshold));
		}
		elsif ($subcommand eq "LISTHOST")
		{
			my %host_state_strings = ("poweredOn" => "UP", "poweredOff" => "DOWN", "suspended" => "SUSPENDED", "standBy" => "STANDBY", "MaintenanceMode" => "Maintenance Mode");
			my $host_views = Vim::find_entity_views(view_type => 'HostSystem', begin_entity => $cluster_view, properties => ['name', 'runtime.powerState']);
			die "Runtime error\n" if (!defined($host_views));
			die "There are no hosts.\n" if (!defined($host_views));
			my $up = 0;
			my $unknown = 0;
			$output = '';

			foreach my $host (@$host_views) {
				$host->update_view_data(['name', 'runtime.powerState']);
				my $host_state = $host_state_strings{$host->get_property('runtime.powerState')->val};
				$unknown += $host_state eq "UNKNOWN";
				if ($host_state eq "UP" && $host_state eq "Maintenance Mode") {
					$up++;
					$output .= $host->name . "(UP), ";
				} else
				{
					$output = $host->name . "(" . $host_state . "), " . $output;
				}
			}

			chop($output);
			chop($output);
			$res = OK;
			$output = $up .  "/" . @$host_views . " Hosts up: " . $output;
			$np->add_perfdata(label => "vmcount", value => $up, uom => 'units', threshold => $np->threshold);
			$res = $np->check_threshold(check => $up) if (defined($np->threshold));
			$res = UNKNOWN if ($res == OK && $unknown);
		}
		elsif ($subcommand eq "STATUS")
		{
			if (defined($cluster_view->overallStatus))
			{
				my $status = $cluster_view->overallStatus->val;
				$output = "overall status=" . $status;
				$res = check_health_state($status);
			}
			else
			{
				$output = "Insufficient rights to access status info on the DC\n";
				$res = WARNING;
			}
		}
		elsif ($subcommand eq "ISSUES")
		{
			my $issues = $cluster_view->configIssue;
			my $issues_count = 0;

			$output = '';
			if (defined($issues))
			{
				foreach (@$issues)
				{
					if (defined($blacklist))
					{
						my $name = ref($_);
						next if ($blacklist =~ m/(^|\s|\t|,)\Q$name\E($|\s|\t|,)/);
					}
					$output .= format_issue($_) . "; ";
					$issues_count++;
				}
			}

			if ($output eq '')
			{
				$res = OK;
				$output = 'No config issues';
			}
			$np->add_perfdata(label => "issues", value => $issues_count);
		}
		else
		{
			$res = CRITICAL;
			$output = "CLUSTER RUNTIME - unknown subcommand\n" . $np->opts->_help;
		}
	}
	else
	{
		my %cluster_maintenance_state = (0 => "no", 1 => "yes");
		my $vm_views = Vim::find_entity_views(view_type => 'VirtualMachine', begin_entity => $cluster_view, properties => ['name', 'runtime.powerState']);
		my $up = 0;

		if (defined($vm_views))
		{
			foreach my $vm (@$vm_views) {
				$up += $vm->get_property('runtime.powerState')->val eq "poweredOn";
			}
			$np->add_perfdata(label => "vmcount", value => $up, uom => 'units', threshold => $np->threshold);
			$output = $up . "/" . @$vm_views . " VMs up";
		}
		else
		{
			$output = "No VMs installed";
		}

		my $AlertCount = 0;
		my $SensorCount = 0;
		my ($cpuStatusInfo, $storageStatusInfo, $memoryStatusInfo, $numericSensorInfo);

		$res = OK;
		$output .= ", overall status=" . $cluster_view->overallStatus->val . ", " if (defined($cluster_view->overallStatus));

		my $issues = $cluster_view->configIssue;
		if (defined($issues))
		{
			$output .= @$issues . " config issue(s)";
		}
		else
		{
			$output .= "no config issues";
		}
	}

	return ($res, $output);
}

sub cluster_list_vm_volumes_info
{
	my ($cluster, $np, $subcommand, $blacklist, $perc, $addopts) = @_;

	my $cluster_view = Vim::find_entity_view(view_type => 'ClusterComputeResource', filter => {name => "$cluster"}, properties => ['name', 'datastore']);
	die "Insufficient rights to access Datastores on the Host\n" if (!defined($cluster_view->datastore));

	return datastore_volumes_info($cluster_view->datastore, $np, $subcommand, $blacklist, $perc, $addopts);
}