File check_esx3 of Package nagios-plugins-snmp

File check_esx3 of Package nagios-plugins-snmp (Revision d2775d3014ae0cc7d61e70d8054dc490)

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#!/usr/bin/perl -w
# vim:ts=4
# check_esx Version 3.0
#
# Check the status of a virtual machine on a VMware ESX server, via SNMP
# Return status in format for either Nagios or MRTG
#
# Steve Shipway (www.steveshipway.org) Nov 2004, Dec 2006, Aug 2007
# Released under GNU GPL
#
# Version 2.0: Added SNMP agent extension to get memory split and ready time
#         2.1: Corrected some bugs.  Use >0.01 instead of >0.
#         2.2: corrected opt_r bug, fa bug
#         2.3:
#         2.4: simpler guest names for list report
#         2.5: Thresholds for LIST given more sensible defaults
#              Added -a alternate for MRTG/Nagios in MEM and CPU
#         2.6: Final tests under ESX3
#         3.0: Merge in GW additions, change -v to -V to standardise

use Net::SNMP;
use Getopt::Std;

my($VERSION) = "3.0";
######## CONFIGURABLE
my($STATEFILE) = "/var/tmp/esx_state";    # For rate counter (if not agent)
my($SWAPINCRIT) = 1024; # this many bps swap in is critical (else warn)
my($SWAPINWARN) = 128; 
my($SWAPPCCRIT) = 4; # this % of gruest memory in swap is critical (else warn)
my($SWAPPCWARN) = 1; # under ESX3, this is always >0 by a tiny bit
my($warn,$crit) = (70,90);   # usage warn/crit: 70/90 is virtualcentre default
my($rwarn,$rcrit) = (10,15); # cpu readytime warn/crit: VMWare say to crit at 5%
my($community) = 'public'; # Default community string
my($TRUNC) = 16; # truncte guest names in report to this length (use 99 to stop)
######## END
my($VMOID) = "1.3.6.1.4.1.6876";          # VMware MIB
my($UCDOID) = "1.3.6.1.4.1.2021.1000.10"; # where to find the agent plugin
my($SYSOID) = "1.3.6.1.2.1.1.1.0";        # system object to test SNMP working
my($OK,$WARNING,$CRITICAL,$UNKNOWN) = (0,1,2,3);
my(%VisibleStatus) = ($OK => "OK", $WARNING => "WARNING", $CRITICAL => "CRITICAL", $UNKNOWN => "UNKNOWN");
my($TIMEOUT) = 5;
my($RETRIES) = 1;
my($from,$to) = (0,99999);
my(%snmp,$snmp,$resp,$snmperr);
my($hostname) = '';
my($vhost) = '';
my($A, $B, $MSG) = ('U','U','');
my($STATUS) = $UNKNOWN;
my($MODE) = 0;
my($VMID) = -1; # set to -1 if not running
my($VMNO) = -1; # set to -1 if not defined
my(%lookup) = ();
my(%states) = ();
my(%tmpnet) = ();
my($fa,$sa,$fb,$sb);
my(@perf) = (); # for performance stats
# For debugging
my($DEBUG) = 0;
my($SNMPFILE) = "testdata/snmp.txt"; # for test/debug mode only
my($VMWARESTATS) = "./vmware-stats -d"; # for test/debug mode only
# End

use vars qw($opt_C $opt_H $opt_N $opt_M $opt_h $opt_c $opt_t $opt_i $opt_d $opt_w $opt_l $opt_v $opt_r $opt_R $opt_a $opt_V);

sub base($) {
	return '?' if(!$_[0]);
	return $1 if( $_[0]=~/^(\S+)/ );
	return $_[0];
}

sub dohelp {
    print "Usage: $0 [-h] [-v] [-d] -H host [-C community] [-N | -M [-r]]\n";
    print "          [-l check [-V vhost] [-i interface] [-w warn -c crit]]\n";
    print "          [-t timeout] [-R retries]\n";
    print "    -h: just prints this help message\n";
    print "    -v: just prints the script version number\n";
    print "    -d: puts the script into debug mode\n";
    print "    -H host: ESX server machine\n";
    print "    -C community: the SNMP community string (default is \"public\")\n";
    print "    -N: Nagios mode (the default); need -w and -c for CPU, MEM\n";
    print "    -M: MRTG mode (-r specifies rate rather than counter)\n";
    print "    -l check: can be CPU MEM STATE LIST NET LISTNET (default is LIST)\n";
    print "    -V virtualhost: restrict probing to that one guest host; required for STATE;\n";
    print "        if not specified, probes total ESX system statistics\n";
    print "    -i interface: Only valid for NET\n";
    print "    -w warn -c crit: Nagios thresholds\n";
    print "    -t timeout: ([1..60] seconds) for individual SNMP queries\n";
    print "    -R retries: # of retries ([0..20]) for individual SNMP queries\n";
    print "\nFor MRTG,\n";
    print "    CPU is total seconds (counter) for vhost or total over all if no vhost given.\n";
    print "    MEM is memory remaining in K.\n";
    print "    STATE is 1 for up, 0 for down.\n";
    print "    LIST is number of vhosts.\n";
    print "    NET is network throughput in bytes for specified vhost and/or interface\n";
    print "        (total of all if not specified).\n";
    print "\nFor Nagios, specify thresholds as follows.\n";
    print "    CPU is percentage of allocated CPU (for vhosts) and of total CPU (if no vhost).\n";
    print "    MEM is active memory (for vhosts) or free phys memory (if no vhost) in K or %.\n";
    print "    STATE is CRITICAL if vhost is down.\n";
    print "    LIST is WARN if some are down, CRIT is all vhosts are down.\n";
    print "    NET is bytes/sec since last check, if possible (otherwise UNKNOWN).\n";
    print "\nThresholds for MEM or LIST under Nagios, can be in K or %\n";
    print "    e.g.: -l MEM -w 2048K -c 1024K\n";
    print "    e.g.: -l MEM -V vhost -w 80% -c 90%\n";
    print "    e.g.: -l LIST -w 90% -c 0\n";
    print "    e.g.: -l LIST -w 10 -c 1\n";
    print "Thresholds for CPU are in % (the trailing % symbol is optional)\n";
    print "    e.g.: -l CPU -w 80 -c 90\n";
    print "Thresholds for NET are in BYTES/SEC (cannot use %)\n";
    exit 0;
}

sub readstate {
	return if(! -r $STATEFILE);
	open STATE, "<$STATEFILE";
	flock STATE,1; # read lock
	while( <STATE> ) { $states{$1}=$2 if( /^(\S+)=(\d+)/ ); }
	flock STATE,8; # unlock
	close STATE;
}

# Big fixes for the race condition from GroundWork
sub writestate {
	my(%new) = @_;

if(-r $STATEFILE) {
 open STATE, "+<$STATEFILE" 
			or do { $A=$B="U"; $MSG="$STATEFILE: $!"; $STATUS=3; &dooutput; };
 flock STATE,2; # write lock
 while( <STATE> ) { $states{$1}=$2 if( /^(\S+)=(\d+)/ ); }
	} else {
		open STATE, ">>$STATEFILE" 
			or do { $A=$B="U"; $MSG="$STATEFILE: $!"; $STATUS=3; &dooutput; };
 flock STATE,2; # write lock

}
    seek STATE,0,0; # rewind
    truncate STATE,0;
    foreach ( keys %new ) { $states{$_} = $new{$_}; }
    foreach ( keys %states ) { print STATE "$_=".$states{$_}."\n"; }
    flock STATE,8; # unlock
    close STATE;
}

sub dooutput {
	if( $MODE ) {
		# MRTG
		$A = 'U' if(!defined $A);
		$B = $A if(!defined $B);
		$MSG = "Returned values: $A, $B\n" if(!$MSG);
		print "$A\n$B\n\n$MSG\n";
		exit 0;
	} else {
		# Nagios: now supporting performance stats
		print "".($VisibleStatus{$STATUS} || "UNKNOWN").": $MSG"
			.(scalar @perf ? "|" . join(" ",@perf) : ""), "\n";
		exit $STATUS;
	}
	# should never get here
}

sub snmpfile($) {
	my(%resp);
	my($k) = $_[0];
	foreach ( keys %snmp ) { $resp{$_} = $snmp{$_} if( /^$k\./); }
	return \%resp;
}

sub makesnmp() {
	if ($DEBUG and $SNMPFILE) {
		open SNMP,"<$SNMPFILE" or return;
		while(<SNMP>) { chomp; if(/^(\S+)\s+=\s+\S+:\s+"?([^"]+)/) { $snmp{$1}=$2; } }	
		close SNMP;
		return;
	}
	($snmp,$snmperr) = Net::SNMP->session( -hostname=>$hostname,
		-community=>$community, -timeout=>$TIMEOUT, -retries=>$RETRIES );
	if($snmperr) {
		$A = $B = 'U';
		print "($snmperr)\n" if($DEBUG);
		$MSG = "Error: $snmperr";
		$STATUS = $UNKNOWN;
		dooutput; # exit 
		exit(0);
	}
}

###########################################################################
# Read detailed memory and CPU data from extended snmp daemon, if possible
my(%stats) = ();
my($donereadagent) = 0;
sub readagent {
	return "" if($donereadagent);
	$MSG = "";
	makesnmp() if(!$snmp);
	if($DEBUG and $VMWARESTATS) {
		open STATS,"$VMWARESTATS|" or return 0;
		while( <STATS> ) { 
#			print;
			chomp; $stats{$1}=$2 if(/^(\S+)\s*=\s*(\S.*)/); }
		close STATS;
		$donereadagent = 1;
		return 0;
	}
	$resp = $snmp->get_request( -varbindlist=>["$UCDOID.2.1"] ); 
	if(!$resp) { # Fall back to the old way
		return 1;
	}
	if( $resp->{"$UCDOID.2.1"} ne 'vmware' ) {
		$MSG = "Incorrect SNMPD configuration: found '".$resp->{"$UCDOID.2.1"}."' when expected 'vmware'";
		$STATUS = $UNKNOWN;
		return 1;
	}
	$resp = $snmp->get_table( -baseoid=>"$UCDOID.101" ); 
	if(!$resp) { # Fall back to the old way
#		$MSG = "SNMP error: ".$snmp->error;
		return 1;
	}
	# Convert the retrieved values to lookup hash
	foreach my $oid ( keys %$resp ) {
		if(( $oid =~ /\.101\.\d+$/ ) and ( $resp->{$oid}=~/^(\S+)=(.*)$/)) {
			$stats{$1}=$2; 
		}
	}
	$donereadagent = 1;
	return "";
}

###########################################################################
sub getesxversion {
    print "(snmp lookup)\n" if($DEBUG);
    makesnmp() if(!$snmp);
    $resp = $snmp->get_request( -varbindlist=>[ "$VMOID.1.2.0" ] );
    if(!$resp) {
        if(readagent) {
            $MSG = "Error: No VMWare SNMP sub-agent running (vmware-snmpd)"
                if(!$MSG);
            $STATUS = $UNKNOWN;
            dooutput; # exit
            exit(0);
        }
        if(!$stats{'has-names'}) {
            $MSG = "Error: No VMWare SNMP sub-agent running (vmware-snmpd)";
            $STATUS = $UNKNOWN;
            dooutput; # exit
            exit(0);
        }
        $esx_version = 2;  # just a blind assumption
    } else {
        $esx_version = $resp->{"$VMOID.1.2.0"};
        $esx_version =~ s/\..*//;
    }
}

# Read all the VM IDs from the vmware-snmpd MIB
sub getvmid {
	print "(snmp lookup)\n" if($DEBUG);

makesnmp() if(!$snmp);
	if(!readagent and $stats{'has-names'}) {
		foreach ( keys %stats ) {
			if( /vhost-(\d+)-name/ ) {
				$lookup{$1} = $stats{$_}; # id->name
				$lookup{$stats{$_}} = "vmno-$1" ; # name->dummyOID
				$lookup{"vmno-$1"} = $1 ; # dummyOID->id
			}
		}
	} else {
		$resp = $snmp->get_table( -baseoid=>"$VMOID.2.1.1");
		if(!$resp) {
			$resp = $snmp->get_request( -varbindlist=>[ "$VMOID.1.1.0" ] );
			if(!$resp) {
				$MSG = "Error: No VMWare SNMP sub-agent running (vmware-snmpd)"
					if(!$MSG);
				$STATUS = $UNKNOWN;
				dooutput; # exit 
				exit(0);
			} else {
				print "No guests are defined on this server\n" if($DEBUG);
				$MSG = "No guests defined on this server";
				return;
			}
		} else {
			foreach my $oid ( keys %$resp ) {
				$oid =~ /(\d+)\.(\d+)$/;
				if( $1 == 2 ) {
					$lookup{$resp->{$oid}} = $2;
					$lookup{$2} = $resp->{"$VMOID.2.1.1.7.$2"};
					$lookup{$resp->{"$VMOID.2.1.1.7.$2"}} = $resp->{$oid};
                    			$lookup{"vmGuestState-$2"} = $resp->{"$VMOID.2.1.1.8.$2"};
				}
			}
		}
	}
	return if(!$vhost); # we're just getting the table
	if(defined $lookup{$vhost}) {
		$VMNO = $lookup{$vhost};
		if( defined $lookup{$VMNO} ) {
			$VMID = $lookup{$VMNO};
            if ( defined $lookup{"vmGuestState-$VMNO"} ) {
                $vmGuestState = $lookup{"vmGuestState-$VMNO"};
            }
		} else {
			$STATUS = $CRITICAL;
			$MSG = "Virtual host $vhost($VMNO) is not running!";
		}
	} else {
		# lets see if they just gave part of the vhost name?
		$VMNO = "U";
		foreach ( keys %lookup ) {
			if( /^$vhost/i ) {
				$VMNO = $lookup{$_};
				if( defined $lookup{$VMNO} ) {
					$VMID = $lookup{$VMNO};
                    if ( defined $lookup{"vmGuestState-$VMNO"} ) {
                        $vmGuestState = $lookup{"vmGuestState-$VMNO"};
                    }
					$vhost = $_;
				} else {
					$STATUS = $CRITICAL;
					$MSG = "Virtual host $vhost($VMNO) is not running!";
				}
				last;
			}
		}
		if($VMNO eq "U") {
			$STATUS = $UNKNOWN;
			$MSG = "Virtual host $vhost is not defined!";
			dooutput; # exit 
			exit(0);
		}
	}

print "(hostno=$VMNO, ID=$VMID)\n" if($DEBUG);
}

sub listvm {
	my(@vh);
	%lookup = (); @vh = ();
	print "(snmp lookup)\n" if($DEBUG);
	makesnmp() if(!$snmp);
	if(!readagent and $stats{'has-names'}) {
		foreach ( keys %stats ) {
			if( /vhost-(\d+)-name/ ) {
				$lookup{$1} = $stats{$_}; # id->name
				$lookup{$stats{$_}} = "vmno-$1" ; # name->dummyOID
				$lookup{"vmno-$1"} = $1 ; # dummyOID->id
				push @vh,$stats{$_};
			}
		}
	} else {
		$resp = $snmp->get_table( -baseoid=>"$VMOID.2.1.1");
		if(!$resp) {
            if(readagent) {
                $A = $B = 'U';
                $MSG = "Error: No VMWare SNMP sub-agent running (vmware-snmpd)"
                    if(!$MSG);
                $STATUS = $UNKNOWN;
                dooutput; # exit
                exit(0);
            }
            if(!$stats{'has-names'}) {
                $MSG = "Error: No VMWare SNMP sub-agent running (vmware-snmpd)";
                $STATUS = $UNKNOWN;
                dooutput; # exit
                exit(0);
            }
            foreach ( keys %stats ) {
                if( /vhost-(\d+)-name/ ) {
                    $lookup{$1} = $stats{$_}; # id->name
                    $lookup{$stats{$_}} = "vmno-$1" ; # name->dummyOID
                    $lookup{"vmno-$1"} = $1 ; # dummyOID->id
                    push @vh,$stats{$_};
                }
            }

} else {
	        foreach my $oid ( sort keys %$resp ) {
	            $oid =~ /(\d+)\.(\d+)$/;
	            if( $1 == 2 ) {
	                $lookup{$resp->{$oid}} = $2;
	                push @vh, $resp->{$oid};
	            } elsif( $esx_version == 2 && $1 == 7 ) {
	                $lookup{$2} = $resp->{$oid};
	            } elsif( $esx_version == 3 && $1 == 8 ) {
	                $lookup{$2} = $resp->{$oid};
	            }
	        }

}
	} # stats available
	$A = $B = 0;
	foreach ( @vh ) { 
		next if(!$_);
		$B++; 
        if ( $esx_version == 2 ) {
            if( defined $lookup{$lookup{$_}} and ($lookup{$lookup{$_}} > 0)) {
                $_ = (substr $_,0,$TRUNC)."(".$lookup{$lookup{$_}}.")"; $A++;
            } else {
                $_ = (substr $_,0,$TRUNC)."(DOWN)";
            }
        } else {
            # This logic is for ESX 3.
		#print "$lookup{$lookup{$_}} \n";
            if( defined $lookup{$lookup{$_}} and ($lookup{$lookup{$_}} > 0 )) {
                $_ = (substr $_,0,$TRUNC)."(UP)"; $A++;
            } else {
                $_ = (substr $_,0,$TRUNC)."(DOWN)";
            }
        }
        $_ =~ s/ *$[^$]+\)($.*$)/$1/;
    }
    $MSG = "VHosts: $A/$B up: ".(join ", ",@vh);
    push @perf, "allvms_up_ct=$A;;;0;$B";
    push @perf, "allvms_up_pc=". int($A/$B*10000)/100.0 ."%;;;0;100";
    $STATUS = $OK;
}

sub readnet {
	my($found);

if($SNMPFILE and $DEBUG) {
		$resp = snmpfile("$VMOID.3.4.1");
	} else {
		$resp = $snmp->get_table( -baseoid=>"$VMOID.3.4.1");
	}
	if(!$resp) {
		$resp = $snmp->get_request( -varbindlist=>[ "$VMOID.1.1" ] );
		if($resp) { $A = $B = 0; 
			$MSG = "No VHosts defined"; $STATUS = $OK; return; }
		$MSG = "Error: Unable to retrieve SNMP data";
		$STATUS = $UNKNOWN;
		return;
	}
	foreach my $oid ( keys %$resp ) {
		$oid =~ /(\d+)\.(\d+)$/; # Type, index.
		if( $1 == 3 ) {
			$tmpnet{$2} = [ 
				$resp->{$oid},
				$resp->{"$VMOID.3.4.1.2.$2"},
				($resp->{"$VMOID.3.4.1.7.$2"}*1024),
				($resp->{"$VMOID.3.4.1.9.$2"}*1024)
			];
		}
	}
	return if($opt_l =~ /LIST/);
	# We now have all the network statistics indexed by card or VMID
	$A = $B = 0; $found = 0;
	foreach ( keys %tmpnet ) {
		if((($VMID<0) or ($VMID == $tmpnet{$_}[0])) # vm matches
			and ((!$opt_i) or ($opt_i eq $tmpnet{$_}[1]))) { # net matches
			$A += $tmpnet{$_}[2];
			$B += $tmpnet{$_}[3];
			$found = 1;
		}
	}
	if(!$found) {
		$MSG = "No network interfaces exist for ";
		$MSG .= "vhost $vhost" if($VMID>-1);
		$MSG .= " and " if($VMID>-1 and $opt_i);
		$MSG .= " interface $opt_i" if ($opt_i);
		$STATUS = $UNKNOWN;
	}
}

###########################################################################
# Read general memory and CPU data from vmware-snmpd
# This is what we do if we can't get the detailed information.
sub readcpu {
	my($k,@k);
	my($t1,$t2,$a1);

$MSG = ""; $A = 0; $B = 0;
	if( !$MODE or $opt_r ) { 
		readstate; 
		$t1 = $states{"$hostname-CPU-$vhost-time"}; 
		$a1 = $states{"$hostname-CPU-$vhost"}; 
		$t2 = time;
	}

@k = ();
	if( $VMID < 0 ) {
		foreach ( keys %lookup ) {
			push @k, "$VMOID.3.1.2.1.3.".$_ if( /^\d+$/ and $_>99);
		}
	} else {
		$k = "$VMOID.3.1.2.1.3.$VMID";
		@k = ( $k );
	}
	foreach $k ( @k ) { print "(retrieving $k)\n" if($DEBUG); }
	$resp = $snmp->get_request( -varbindlist=>\@k );
	if( $resp ) {
		if($VMID<0){
			$A = 0;
			foreach ( keys %$resp ) { $A += $resp->{$_}; 
				print "$_: ".$resp->{$_}."\n" if($DEBUG); }
		} else {
			$A = $resp->{$k}; 
		}
		$B = 0;
	} else {
		$A = $B = 'U';
		if($VMID<0){
			$MSG = "Unable to retrieve CPU statistics for ESX server: ".$snmp->error;
		} else {
			$MSG = "Unable to retrieve CPU statistics for $vhost: ".$snmp->error;
		}
		$STATUS = $UNKNOWN;
	}
	if(!$MSG){ # IE, no errors
		$MSG = "CPU has used $A seconds";
		$MSG .= " on $vhost" if($vhost);
		if( !$MODE or $opt_r ) { 
			writestate( "$hostname-CPU-$vhost"=>$A, "$hostname-CPU-$vhost-time"=>$t2 )
				if(!$t1 or ($t2-$t1)>30); 
			if(!$t1 or !$a1 or ($t1 >= $t2) or ( ($t2-$t1)>1000 ) ) { 	
				if($vhost) {
					$MSG = "No saved state for $vhost CPU time yet - please wait for next poll.";	
				} else {
					$MSG = "No saved state for ESX system CPU time yet - please wait for next poll.";
				}
				$A = $B = "U";
				$STATUS = $UNKNOWN;
			} else {
				print "Usage: $A-$a1 in $t2-$t1 = ".($A-$a1)." in ".($t2-$t1)
					if($DEBUG);
				$A = int((($A - $a1)/($t2 - $t1))*10000)/100;
				print " = $A\n" if($DEBUG);
				$B = 0;
				$MSG = "CPU usage is $A% ";
				$MSG .= "on $vhost" if($vhost);
				$MSG .= " (".($t2-$t1)."s average)";
				if($A>110 or $A<0) {
					$B = $A = 0;
					$MSG = "Error reading CPU usage information."
				}
			}
		}
	}
}

sub readmem {
	my($k1,$k2);

if($VMID < 0) {
		$k1 = "$VMOID.3.2.1.0"; # Total physical present
		$k2 = "$VMOID.3.2.3.0"; # Memory free
	} else {
		$k1 = "$VMOID.3.2.4.1.3.$VMID"; # VM memory max
		$k2 = "$VMOID.3.2.4.1.4.$VMID"; # VM memory used
	}
	print "(retrieving $k1,$k2)\n" if($DEBUG);
	$resp = $snmp->get_request( -varbindlist=>[$k1,$k2] );
	if( $resp ) {
		if($VMID < 0 ) {
			$A = $resp->{$k2}; $B = $resp->{$k1};
		} else {
			$A = $resp->{$k2}; $B = $resp->{$k1};
			$B *= 1024 if($B<10240 or $B<$A); # ESX3 gives it in Kb, ESX2 gives it in Mb (argh!)
			# we can assume noone has a VM with <10Mb or >10Gb!
			$A = $B - $A; # memory remaining
		}
	} else {
		$A = $B = 'U';
		if($VMID<0) {
		$MSG = "Unable to retrieve memory statistics for ESX server: ".$snmp->error;
		} else {
		$MSG = "Unable to retrieve memory statistics for $vhost: ".$snmp->error;
		}
		$STATUS = $UNKNOWN;
	}
}
sub readconsolemempc {
 my($k1,$k2);

$k1 = "$VMOID.3.2.1.0"; # Total physical present (vmwMemory.memSize.0)
    $k2 = "$VMOID.3.2.2.0"; # Memory used by console (vmwMemory.memCOS.0)
    print "(retrieving $k1,$k2)\n" if($DEBUG);
    $resp = $snmp->get_request( -varbindlist=>[$k1,$k2] );
    if( $resp ) {
        return int( $resp->{$k2} / $resp->{$k1} * 10000) / 100.0;
    } else {
        return 'U';
    }
}

sub vmavgready {
	my($c) = 0;
	my($t) = 0;
	foreach my $k ( keys %stats ) {
		if( $k =~ /vhost-.*-cpu-ready-pc/ ) {
			$c += 1;
			$t += $stats{$k};
			print "$k : ".$stats{$k}."\n" if($DEBUG);
		}
	}
	print "$c vhosts total ready $t, avg is ".($t/$c)."\n" if($DEBUG);
	return ($c?($t/$c):undef);
}
sub readrpc {
	$MSG = ""; $A = 0; $B = 0; $STATUS = 0;
	if( readagent ) {
		$A = $B = "U";
		print "(readagent failed: $MSG)\n" if($DEBUG);
		$STATUS = 3 if(!$STATUS); 
		$MSG = "Unable to retrieve statistics" if(!$MSG);	
		dooutput;
		exit $STATUS;
	}
	if( ! $stats{'has-rpc'} ) {
		$A = $B = "U";
		print "(old version agent)\n" if($DEBUG);
		$STATUS = 3 if(!$STATUS); 
		$MSG = "Remote agent does not support RPC: upgrade to vmware-stats v2.5 or later!";	
		dooutput;
		exit $STATUS;
	}
	if($vhost) {
		$A = $stats{"vhost-$VMID-rpc-count"};
		$B = $stats{"vhost-$VMID-rpc-rate"};
		if(!defined $A) { $A= $B = 'U'; $MSG="Unable to retrieve data";
			$STATUS = 3; dooutput; exit 3; }
		$B = 0 if(!$B);
	} else {
		$A = $B = 0;
		foreach ( keys %stats ) {
			$A += $stats{$_} if( /-rpc-count/ );
			$B += $stats{$_} if( /-rpc-rate/ );
		}
	}
}
sub readxcpu {
	my($k,$C);
	$MSG = ""; $A = 0; $B = 0; $STATUS = 0;
	if( readagent ) {
		print "(readagent failed: $MSG)\n" if($DEBUG);
		readcpu if(!$MSG); # no vmware agent, no error
		return;
	}
	if($vhost) { 
 if ( $esx_version <= 2 ) {
 $k = "vhost-$VMID";
 } else {
 foreach my $key ( keys %stats ) {
 if ( $stats{$key} eq $lookup{$lookup{$VMNO}} ) {
 $key =~ /vhost-(\d+)-name/;
 $k = "vhost-$1";
 last;
 }
 }
 }
 if ( defined $k ) {
 $A = $stats{"$k-cpu-used-pc"};
 $B = $stats{"$k-cpu-ready-pc"};
 } else {
 $A = undef;
 $B = undef;
 }
 $C = $A;
	} else { 
		$k = "sys"; 
		if($opt_a) {
			$A = $stats{"sys-cpu-used-pc"} + $stats{"allvms-cpu-used-pc"}
				if($stats{"allvms-cpu-used-pc"});
			$B = vmavgready();
			$C = $B if(defined $B);
		} else {
			$A = $stats{"sys-cpu-used-pc"};
			$B = $stats{"allvms-cpu-used-pc"};
			$C = $A + $B if(defined $A and defined $B);
		}
	}
	if(!defined $A or !defined $B) {
		$A=$B='U'; $MSG="No saved CPU statistics available - please wait for next poll.";
		$STATUS = 3;
 # Fill in some dummy performance data anyway, to keep downstream processes somewhat happy.
 if ($vhost) {
 push @perf, "vhost_cpu_used_pc=U%;;;0;100";
 push @perf, "vhost_cpu_ready_pc=U%;;;0;100";
 } else {
 push @perf, "sys_cpu_used_pc=U%;;;0;100";
 push @perf, "allvms_cpu_used_pc=U%;;;0;100";
 push @perf, "sys_cpu_ready_pc=U%;;;0;100";
 }

dooutput; exit 3;
	}

if($opt_a) {
		if($vhost) { $MSG = "vhost CPU used=$A% ready=$B%"; }
		else { $MSG = "CPU used total=$A% avgvhostreadytime=$B%"; }
	} else {
		if($vhost) { $MSG = "vhost CPU used=$A% ready=$B%"; }
		else { $MSG = "CPU used sys=$A% vhosts=$B% sysreadytime="
			.$stats{'sys-cpu-ready-pc'}."%"; }
	}

if($vhost) {
        $MSG = "vhost CPU used=$A% ready=$B%";
        push @perf, "vhost_cpu_used_pc=$A%;;;0;100";
        push @perf, "vhost_cpu_ready_pc=$B%;;;0;100";
    } else {
        $MSG = "CPU used sys=$A% vhosts=$B% readytime=".$stats{'sys-cpu-ready-pc'}."%";
        push @perf, "sys_cpu_used_pc=$A%;;;0;100";
        push @perf, "allvms_cpu_used_pc=$B%;;;0;100";
        push @perf, "sys_cpu_ready_pc=".$stats{'sys-cpu-ready-pc'}."%;;;0;100";
    }

# MRTG only
	if($MODE) { dooutput; exit 0; } 
	# Nagios only
	if(!$vhost and $opt_a) {
		if($C>=$rcrit) {
			$MSG .= " " if($MSG);
			$MSG .= "Ready time is CRITICAL ($C\%)";
			$STATUS = 2;
		} elsif($C>=$rwarn) {
			$MSG .= " " if($MSG);
			$MSG .= "Ready time is WARNING ($C\%)";
			$STATUS = 1 if($STATUS<2);
		}
	} else {
	$crit =~ s/[^\d\.]//g; $warn =~ s/[^\d\.]//g;
	$crit = 100 if(!$crit); $warn = 100 if(!$warn);
	if( $C >= $crit ) {
		$MSG .= " " if($MSG);
		$MSG .= "CPU usage is CRITICAL ($C\%)";
		$STATUS = 2;
	} elsif( $C >= $warn ) {
		$MSG .= " " if($MSG);
		$MSG .= "CPU usage is WARNING ($C\%)";
		$STATUS = 1 if($STATUS<2);
	}

# Ready time
	if( $stats{"$k-cpu-ready-pc"} >= $rcrit ) {
		$MSG .= " " if($MSG);
		$MSG .= "Ready time is CRITICAL (".$stats{"$k-cpu-ready-pc"}."\%)";
		$STATUS = 2;
	} elsif( $stats{"$k-cpu-ready-pc"} >= $rwarn ) {
		$MSG .= " " if($MSG);
		$MSG .= "Ready time is WARNING (".$stats{"$k-cpu-ready-pc"}."\%)";
		$STATUS = 1 if($STATUS<2);
	}	
	}
	if(!$vhost) { # check all vhosts
		foreach ( keys %lookup ) {
			next if(!defined $stats{"vhost-$_-cpu-used-pc"});
			$C=$stats{"vhost-$_-cpu-used-pc"};
			if( $C >= $crit ) {
				$MSG .= " " if($MSG);
				$MSG .= "'".base($lookup{$_})."' CPU CRITICAL ($C\%)";
				$STATUS = 2;
			} elsif( $C >= $warn ) {
				$MSG .= " " if($MSG);
				$MSG .= "'".base($lookup{$_})."' CPU WARNING ($C\%)";
				$STATUS = 1 if($STATUS<2);
			}
			if( $stats{"vhost-$_-cpu-ready-pc"} >= $rcrit ) {
				$MSG .= " " if($MSG);
				$MSG .= "'".base($lookup{$_})."' Ready time CRITICAL (".$stats{"vhost-$_-cpu-ready-pc"}."\%)";
				$STATUS = 2;
			} elsif( $stats{"vhost-$_-cpu-ready-pc"} >= $rwarn ) {
				$MSG .= " " if($MSG);
				$MSG .= "'".base($lookup{$_})."' Ready time WARNING (".$stats{"vhost-$_-cpu-ready-pc"}."\%)";
				$STATUS = 1 if($STATUS<2);
			}
		}
	}
	dooutput;
	exit 3; # not reached
}
sub readxmem {
	my($pc,$max,$k,$memVMID);

$MSG = ""; $A = 0; $B = 0;
	if( readagent() ) {
		print "(readagent failed: $MSG)\n" if($DEBUG);
		readmem if(!$MSG); # no vmware agent, no error
		return;
	}

if( $vhost ) {
 if ( $esx_version <= 2 ) {
 $k = "vhost-$VMID";
 } else {
 # for ESX Version 3
 foreach my $key ( keys %stats ) {
 if ( $stats{$key} eq $lookup{$lookup{$VMNO}} ) {
 $key =~ /vhost-(\d+)-name/;
 $memVMID = $1 - 1; # why this is off by one, we don't know, but it is
 $k = "unknown-$memVMID";
 last;
 }
 }
 }
 $A = $stats{"$k-mem-active"};
 $B = $stats{"$k-mem-max"};
 $max = $stats{"$k-mem-max"};

if(!defined $A or !defined $B) { $A=$B='U'; 
			$MSG="Problem reading memory data on ESX server"; $STATUS=3;
 push @perf, "vhost_mem_act_pc=U\%;;;0;100";
 push @perf, "vhost_mem_pvt_pc=U\%;;;0;100";
 push @perf, "vhost_mem_shr_pc=U\%;;;0;100";
 push @perf, "vhost_mem_bal_pc=U\%;;;0;100";
 push @perf, "vhost_mem_swp_pc=U\%;;;0;100";
			dooutput; exit 0;
		}
		$pc = int($A/$B*10000)/100.0;
		$MSG = "Memory active: ".int($A/1024000)."Mb ($pc\%) [Total available ".int($B/1024000)."Mb]";
 push @perf, "vhost_mem_act_pc=$pc\%;;;0;100";
		if($pc>=$crit) { $STATUS=2; $MSG = "CRIT: $MSG"; }
		elsif($pc>=$warn) { $STATUS=1; $MSG = "WARN: $MSG"; }
		if($opt_a) { $A = $B = $pc; }
	} else {
 $k = "allvms";
#		$A = $stats{'mem-avail'}; 
#		$B = $stats{'mem-total'};
 $A = $stats{'mem-free'};
 $B = $stats{'mem-total'};
 $max = $stats{"$k-mem-max"};
		if(!defined $A or !defined $B) { $A=$B='U'; 
			$MSG="Problem reading memory data on ESX server."; $STATUS=3;
 push @perf, "mem_free_pc=U\%;;;0;100";
 if ( $esx_version == 3 ) {
 push @perf, "console_mem_pc=U\%;;;0;100";
 }
 push @perf, "allvms_mem_pvt_pc=U\%;;;0;100";
 push @perf, "allvms_mem_shr_pc=U\%;;;0;100";
 push @perf, "allvms_mem_bal_pc=U\%;;;0;100";
 push @perf, "allvms_mem_swp_pc=U\%;;;0;100";
			dooutput; exit 0;
		}
		$pc = int($A/$B*10000)/100.0;
		$MSG = "Memory unreserved: ".int($A/1024000)."Mb ($pc\%) [Total managed ".int($B/1024000)."Mb]";
 push @perf, "mem_free_pc=$pc\%;;;0;100";
 if ( $esx_version == 3 ) {
 my ($consolemempc) = readconsolemempc;
 $MSG .= " [Console=$consolemempc\%]";
 push @perf, "console_mem_pc=" . $consolemempc . "\%;;;0;100";
 }
		if($pc<=$crit) { $STATUS=2; $MSG = "CRIT: $MSG"; }
		elsif($pc<=$warn) { $STATUS=1; $MSG = "WARN: $MSG"; }
		if($opt_a) { 
			$MSG = "Memory used: ".int(($B-$A)/1024000)."Mb (".(100-$pc)."\%) [Total available ".int($B/1024000)."Mb]";
			$A = 100 - $pc; $B = $pc; 
		}
	}

# MRTG
	if($MODE) { dooutput; exit 0; }

# Nagios	
	if($max) {
		$MSG .= " Memory split: pvt/shr/bal/swp = "
			.(int(10000*$stats{"$k-mem-private"}/$max)/100.0)."\%/"
			.(int(10000*$stats{"$k-mem-shared"}/$max)/100.0)."\%/"
			.(int(10000*$stats{"$k-mem-balloon"}/$max)/100.0)."\%/"
			.(int(10000*$stats{"$k-mem-swap"}/$max)/100.0)."\%";
 if ($vhost) {
 push @perf, "vhost_mem_pvt_pc=" . (int(10000*$stats{"$k-mem-private"}/$max)/100.0) . "\%;;;0;100";
 push @perf, "vhost_mem_shr_pc=" . (int(10000*$stats{"$k-mem-shared" }/$max)/100.0) . "\%;;;0;100";
 push @perf, "vhost_mem_bal_pc=" . (int(10000*$stats{"$k-mem-balloon"}/$max)/100.0) . "\%;;;0;100";
 push @perf, "vhost_mem_swp_pc=" . (int(10000*$stats{"$k-mem-swap" }/$max)/100.0) . "\%;;;0;100";
 } else {
 push @perf, "allvms_mem_pvt_pc=" . (int(10000*$stats{"$k-mem-private"}/$max)/100.0) . "\%;;;0;100";
 push @perf, "allvms_mem_shr_pc=" . (int(10000*$stats{"$k-mem-shared" }/$max)/100.0) . "\%;;;0;100";
 push @perf, "allvms_mem_bal_pc=" . (int(10000*$stats{"$k-mem-balloon"}/$max)/100.0) . "\%;;;0;100";
 push @perf, "allvms_mem_swp_pc=" . (int(10000*$stats{"$k-mem-swap" }/$max)/100.0) . "\%;;;0;100";
 }
	
		if($stats{"$k-mem-balloon"}) {
			$pc = int(100000*$stats{"$k-mem-balloon"}/$max)/1000.0;
			if($pc>=25) {
				$MSG .= " CRIT: Balloon drivers in action! ($pc\%)";
				$STATUS = 2;
			} elsif($pc>=0.01) {
				$MSG .= " WARN: Balloon drivers in action! ($pc\%)";
				$STATUS = 1 if($STATUS<2);
			}
		}
	}
	if($stats{"$k-swap-in-bps"} and $stats{"$k-swap-in-bps"}>10) {
		if($stats{"$k-swap-in-bps"}>$SWAPINCRIT) {
			$MSG .= " CRIT: VMware swapping in action! (".$stats{"$k-swap-in-bps"}."Bps)";
			$STATUS = 2;
		} else {
			$MSG .= " WARN: VMware swapping is starting!";
			$STATUS = 1 if($STATUS<2);
		}
	} elsif($max and $stats{"$k-mem-swap"}) {
		$pc = int(100000*$stats{"$k-mem-swap"}/$max)/1000.0;
		if($pc>=$SWAPPCCRIT) {
			$MSG .= " CRIT: VMWare swap space in use! ($pc\%)";
			$STATUS = 2;
		} elsif($pc>=$SWAPPCWARN) {
			$MSG .= " WARN: VMWare swap space in use! ($pc\%)";
			$STATUS = 1 if($STATUS<2);	
		}
	}

dooutput;
	exit 3; # not reached
}

###########################################################################
getopts('vahrdNMH:c:t:V:w:C:l:i:R:');
$hostname = $opt_H if($opt_H);
$vhost = $opt_V if($opt_V);
$warn = $opt_w if($opt_w);
$crit = $opt_c if($opt_c);
$TIMEOUT = $opt_t if($opt_t);
$RETRIES = $opt_R if($opt_R);
$MODE = 1 if($opt_M);
$community = $opt_C if($opt_C);
$DEBUG = 1 if($opt_d);
dohelp if($opt_h);

if($opt_v) {
	print "(did you mean to use -V?) " if($opt_C or $opt_H);
	print "check_esx version $VERSION\n";
	exit 0;
}
if(!$hostname) {
	$MSG = "No ESX server hostname specified with -H";
	dooutput;
	exit 0;
}
if( !$opt_l ) {
#	$MSG = "You need to specify a command with -l";
#	dooutput;
#	exit 0;
	$opt_l = "LIST";
}
getesxversion;
if( $opt_l =~ /LISTNET/i ) {
	getvmid;
	$MSG = "";
	readnet;
	if(!$MSG) {
		my($tk);
		foreach ( keys %tmpnet ) {
			if(!$vhost or ($VMID eq $tmpnet{$_}[0]) ) {
				$tk=$tmpnet{$_}[1];
				next if($MSG=~/$tk/);
				$MSG .= ', ' if($MSG);
#				$MSG .= $lookup{$tmpnet{$_}[0]}."/" if(!$opt_v);
				$MSG .= $tk;
			}
		}
		$STATUS = $OK;
	}
	dooutput;
	exit 0;
}
if( $opt_l =~ /LIST/i ) {
	listvm;
	if(!$opt_w) { $warn = $B - 1; }
	if(!$opt_c) { $crit = 0; }
	if($warn =~ /(\d+)\%/) {
		$warn = $B * $1 / 100;
	} elsif( $warn < 0 ) { $warn = $B - 1; }
	if($crit =~ /(\d+)\%/) {
		$crit = $B * $1 / 100;
	} elsif( $crit < 0 ) { $crit = 0; }
	$STATUS = $WARNING if($A<=$warn); # If SOME are down
	$STATUS = $CRITICAL if($A<=$crit); # If NONE are up
	$STATUS = $OK if(!$B); # No guests at all
	dooutput;
	exit 3;
}
if( $opt_l !~ /NET|CPU|MEM|STAT|RPC/i ) {
	$MSG = "Bad command $opt_l!";
	dooutput;
	exit 3;
}
if( $opt_l =~ /MEM|CPU|NET|RPC/ and !$MODE and ($crit<0 or $warn<0)) {
	$MSG = "Invalid warn/critical thresholds for '$opt_l' (need -w and -c)"; 
	dooutput;
	exit 3;
}

# Now, we have host, vhost, community, and command
getvmid; # also opens SNMP object
if( $opt_l =~ /STAT/i ) {
	if(!$vhost) {
		$MSG = "No virtual hostname specified with -v";
		dooutput;
		exit 0;
	}
 if( ( $esx_version == 2 && $VMID < 0 ) || ( $esx_version == 3 && $vmGuestState ne "running" ) ) {
 $STATUS = $CRITICAL; ($A,$B) = (0,0);
 $MSG = "VHost $vhost is down or undefined.";
 } else {
 $STATUS = $OK; ($A,$B) = (1,1);
 $MSG = "VHost $vhost is up (ID: $VMID)";
 }
 push @perf, "vhost_up=$A;;;0;1";
	dooutput;
	exit 0;
}
if($vhost and ( $esx_version == 2 && $VMID < 0 || $esx_version == 3 && $vmGuestState ne "running" )) {
 $STATUS = $CRITICAL;
 $MSG = "$vhost is not running." if(!$MSG);
 if( $opt_l =~ /CPU/i ) {
 # Fill in some dummy performance data anyway, to keep downstream processes happy.
 push @perf, "vhost_cpu_used_pc=U%;;;0;100";
 push @perf, "vhost_cpu_ready_pc=U%;;;0;100";
 }
 if( $opt_l =~ /MEM/i ) {
 # Fill in some dummy performance data anyway, to keep 
		# downstream processes happy.
 push @perf, "vhost_mem_act_pc=U%;;;0;100";
 push @perf, "vhost_mem_pvt_pc=U%;;;0;100";
 push @perf, "vhost_mem_shr_pc=U%;;;0;100";
 push @perf, "vhost_mem_bal_pc=U%;;;0;100";
 push @perf, "vhost_mem_swp_pc=U%;;;0;100";
 }
 if( $opt_l =~ /NET/i ) {
 # Fill in some dummy performance data anyway, to keep 
		#downstream processes happy.
 push @perf, "vhost_net_read=U;;;0";
 push @perf, "vhost_net_write=U;;;0";
 }
 dooutput;
 exit 0;
}

$STATUS = $OK;
if( $opt_l =~ /CPU/i ) {	
	$warn = 70 if(!$opt_w);
	$crit = 90 if(!$opt_c);
	$MSG = "";
	readxcpu; # attempt to use extended MIB, else use VMWare MIB
} elsif( $opt_l =~ /NET/i ) {	
	my($t1,$t2,$a1,$b1);
	$opt_i = "" if(!defined $opt_i);
	$vhost = "" if(!defined $vhost);
	if( !$MODE or $opt_r ) { 
		readstate; 
		$t1 = $states{"$hostname-NET-$vhost-$opt_i-time"}; 
		$a1 = $states{"$hostname-NET-$vhost-$opt_i-r"}; 
		$b1 = $states{"$hostname-NET-$vhost-$opt_i-w"}; 
		$t2 = time;
	}
	$MSG = "";
	readnet;
	if(!$MSG){ # IE, no errors
		$MSG = "Network counters Read=$A Write=$B";
		$MSG .= " on $vhost" if($vhost);
		if( $opt_i ) {
			if( $vhost ) { $MSG .= '/'; } else { $MSG .= ' on '; }
			$MSG .= $opt_i;
		}
		if( !$MODE or $opt_r ) { 
			writestate( "$hostname-NET-$vhost-$opt_i-r"=>$A, 
				"$hostname-NET-$vhost-$opt_i-w"=>$B, 
				"$hostname-NET-$vhost-$opt_i-time"=>$t2 ) 
				if(!$t1 or ($t2-$t1)>30); 
			if(!$t1 or (!$a1 and !$b1) or ($t1 >= $t2) or (($t2 - $t1)>3600)) {	
				$MSG = "Gathering network statistics - please wait for next poll.";	
				$A = $B = "U";
				$STATUS = $UNKNOWN;
                if ($vhost) {
                    push @perf, "vhost_net_read=U;;;0";
                    push @perf, "vhost_net_write=U;;;0";
                } else {
                    push @perf, "allvms_net_read=U;;;0";
                    push @perf, "allvms_net_write=U;;;0";
                }
			} else {
				$A = ($A - $a1)/($t2 - $t1);
				$B = ($B - $b1)/($t2 - $t1);
				($fa,$sa,$fb,$sb) = ( $A, "", $B, "" );
                if($fa >= 1048576) { $fa /= 1048576; $sa = 'M'; }
                elsif($fa >= 1024) { $fa /= 1024; $sa = 'K'; }
                if($fb >= 1048576) { $fb /= 1048576; $sb = 'M'; }
				elsif($fb >= 1024) { $fb /= 1024; $sb = 'K'; }
				$fa = int($fa * 100)/100; $fb = int($fb * 100)/100;
				$MSG = "Network traffic $fa ".$sa."B/s read, $fb ".$sb."B/s write ";
				$MSG .= "on $vhost" if($vhost);
				if( $opt_i ) {
					if( $vhost ) { $MSG .= '/'; } else { $MSG .= 'on '; }
					$MSG .= $opt_i;
				}
				$MSG .= " (".($t2-$t1)."s average)";
                if ($vhost) {
                    push @perf, "vhost_net_read=".(int(100*$A)/100.0).";;;0";
                    push @perf, "vhost_net_write=".(int(100*$B)/100.0).";;;0";
                } else {
                    push @perf, "allvms_net_read=".(int(100*$A)/100.0).";;;0";
                    push @perf, "allvms_net_write=".(int(100*$B)/100.0).";;;0";
                }
			}
		}
	}
} elsif( $opt_l =~ /MEM/i ) {	
	my($pc,$tot,$av,$sfx);
	$MSG = "";
	if($opt_v) {
		$warn = 70 if(!$opt_w);
		$crit = 90 if(!$opt_c);
	} else {
		$warn = 30 if(!$opt_w);
		$crit = 10 if(!$opt_c);
	}
	readxmem;
	if(!$MSG) {
		$pc = int($A/$B*10000.0)/100.0;	
		$sfx = "Kb"; $av = $A;
		if($av>2047) { $av = int($av/10.24)/100.0; $sfx="Mb"; }
		$av .= $sfx;
		$sfx = "Kb"; $tot = $B;
		if($tot>2047) { $tot = int($tot/10.24)/100.0; $sfx="Mb"; }
		$tot .= $sfx;
		$MSG = "Memory free: $av ($pc\%) [Total available $tot]" ;
		$MSG .= " on vhost $vhost" if($vhost);
	}
} elsif( $opt_l =~ /RPC/i ) {	
	$MSG = "";
	readrpc;
	if(!$MSG) {
		$MSG = "RPC calls ".(int($B*100)/100)."/sec (Total: $A)";
	}
} else {
	$MSG = "Invalid command $opt_l";
	$STATUS = $UNKNOWN;
}

if( !$MODE and $STATUS==$OK ) {
	# Set Nagios thresholds
	if( $opt_l=~/MEM/i and $warn =~ /([\d\.]+)%/ ) { $warn = $B * $1 / 100.0; }
	elsif( $warn =~ /([\d\.]+)M/i ) { $warn = $1 * 1024; }
	elsif( $warn =~ /([\d\.]+)/i ) { $warn = $1; }
	if( $opt_l=~/MEM/i and $crit =~ /([\d\.]+)%/ ) { $crit = $B * $1 / 100.0; }
	elsif( $crit =~ /([\d\.]+)M/i ) { $crit = $1 * 1024; }
	elsif( $crit =~ /([\d\.]+)/i ) { $crit = $1; }
	if( $opt_l =~ /MEM/i ) {
		print "$A : $warn : $crit \n" if ($DEBUG);
		$STATUS = $WARNING if( $A <= $warn );
		$STATUS = $CRITICAL if( $A <= $crit );
	} elsif( $opt_l =~ /CPU/i ) {
		$STATUS = $WARNING if( ($A+$B) >= $warn );
		$STATUS = $CRITICAL if( ($A+$B) >= $crit );
	} elsif( $opt_l =~ /NET/i ) {
		$STATUS = $WARNING if( $A >= $warn );
		$STATUS = $WARNING if( $B >= $warn );
		$STATUS = $CRITICAL if( $A >= $crit );
		$STATUS = $CRITICAL if( $B >= $crit );
	} elsif( $opt_l =~ /RPC/i ) {
		$STATUS = $WARNING if( $B >= $warn );
		$STATUS = $CRITICAL if( $B >= $crit );
	} else {
		$STATUS = $WARNING if( $A <= $warn );
		$STATUS = $CRITICAL if( $A <= $crit );
	}
}

$snmp->close if($snmp);;
dooutput;
exit 0;