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#!/usr/bin/perl -wT
#
# Copyright (c) 2000 Hugo Gayosso
#
# Description:
# Nagios plug-in that monitors the resources on an HP-UX machine
# by querying the SNMP daemon
#
# License: General Public License (GPL)
# http://www.gnu.org/copyleft/gpl.txt
#
# ChangeLog
#
# Requirements: Perl 5.005 or higher
# Variable initialization
$ENV{'PATH'}="";
$ENV{'ENV'}="";
$ENV{'BASH_ENV'}="";
if (-e "/usr/bin/snmpwalk") {
$snmpwalk = "/usr/bin/snmpwalk";
} elsif (-e "/usr/local/bin/snmpwalk") {
$snmpwalk = "/usr/local/snmpwalk";
}
# HP-UX SNMP OIDs
$filesystemID1_OID = ".1.3.6.1.4.1.11.2.3.1.2.2.1.1";
$mounted_OID = ".1.3.6.1.4.1.11.2.3.1.2.2.1.3";
$totalspace_OID = ".1.3.6.1.4.1.11.2.3.1.2.2.1.4";
$freespace_OID = ".1.3.6.1.4.1.11.2.3.1.2.2.1.6";
$path_OID = ".1.3.6.1.4.1.11.2.3.1.2.2.1.10";
$cpu_5min_OID = ".1.3.6.1.4.1.11.2.3.1.1.4";
use Getopt::Long;
GetOptions( "check-filesystem" => \$chk_fs,
"show-filesystems" => \$show_fs,
"check-filesystemID" => \$chk_fsid,
"check-cpu" => \$chk_cpu,
"host=s" => \$target_host,
"community=s" => \$target_community,
"filesystemID1=i" => \$fsid1_opt,
"filesystem=s" => \$fs_opt,
"warning=i" => \$warning_opt,
"critical=i" => \$critical_opt);
if ($chk_fs) {
walk_data($snmpwalk, $target_host, $target_community, $mounted_OID );
walk_data($snmpwalk, $target_host, $target_community, $totalspace_OID );
walk_data($snmpwalk, $target_host, $target_community, $freespace_OID ); check_filesystem($fs_opt, $warning_opt, $critical_opt);
} elsif ($show_fs) {
walk_data($snmpwalk, $target_host, $target_community, $filesystemID1_OID);
walk_data($snmpwalk, $target_host, $target_community, $mounted_OID );
walk_data($snmpwalk, $target_host, $target_community, $path_OID);
show_filesystem();
} elsif ($chk_fsid){
$totalspace_fsID_OID = "$totalspace_OID.$fsid1_opt";
$freespace_fsID_OID = "$freespace_OID.$fsid1_opt";
walk_data($snmpwalk, $target_host, $target_community, $totalspace_fsID_OID);
walk_data($snmpwalk, $target_host, $target_community, $freespace_fsID_OID);
check_filesystemID1($fsid1_opt, $warning_opt, $critical_opt);
} elsif ($chk_cpu) {
get_cpu_load($snmpwalk, $target_host, $target_community, $cpu_5min_OID);
check_cpu_5min($cpu, $warning_opt, $critical_opt);
} else {
print "\n\nUsage:\n";
print "Checking 5-min CPU Load:\n";
print " $0 --check-cpu -warning <threshold> --critical <threshold> --host <yourhost> --community <SNMP community>\n\n";
print "Checking local filesystem mounted on a host:\n";
print " $0 --show-filesystems --host <hostname> --community <SNMP community>\n\n";
print "Checking by filesystem name:\n";
print " $0 --check-filesystem --filesystem </dev/vg00/lvol1> --warning <% used space> --critical <% used space> --host <hostname> --community <SNMP community>\n\n";
print "Checking by filesystem ID:\n";
print " $0 --check-filesystemID --filesystemID <filesystemID1> --warning <% used space> --critical <% used space> --host <hostname> --community <SNMP community>\n\n";
}
sub get_cpu_load {
my ($snmpwalk, $target_host, $target_community, $OID) = @_;
die "cannot fork: $!" unless defined($pid = open(SNMPWALK, "-|"));
if ($pid) { # parent
while (<SNMPWALK>) {
my @snmpdata = split(/:/,$_);
$cpu = $snmpdata[1]/100;
}
close(SNMPWALK) or warn "kid exited $?";
} else { # child
exec($snmpwalk,$target_host,$target_community,$OID) or die "can't exec program: $!";
}
}
sub walk_data {
#This function queries the SNMP daemon for the specific OID
my ($snmpwalk, $target_host, $target_community, $OID) = @_;
die "cannot fork: $!" unless defined($pid = open(SNMPWALK, "-|"));
if ($pid) { # parent
while (<SNMPWALK>) {
$output = $_;
sort_walk_data($output);
}
close(SNMPWALK) or warn "kid exited $?";
} else { # child
exec($snmpwalk,$target_host,$target_community,$OID) or die "can't exec program: $!";
}
}
sub sort_walk_data {
my ($snmp_data) = @_;
@fields = split(/\./,$snmp_data);
$item = $fields[8];
$filesystemID1 = $fields[9];
@fields2 = split(/=/,$fields[10]);
# $filesystemID2 = $fields2[0];
$value = $fields2[1];
chomp($value);
if ($value =~ /"/) {
@fields3 = split(/"/,$value);
$value = $fields3[1];
}
if ($item == 3) {
$mounted{$filesystemID1} = "$value";
} elsif ($item == 4) {
$totalspace{$filesystemID1} = "$value";
} elsif ($item == 6) {
$freespace{$filesystemID1} = "$value";
} elsif ($item == 10) {
$filesystempath{$filesystemID1} = "$value";
}
}
sub show_filesystem {
print "\n\nfilesystemID1\tmounted filesystem\tfilesystem path\n";
foreach $element (keys %mounted) {
print "$element\t$mounted{$element}\t\t$filesystempath{$element}\n";
}
print "\n\n";
}
sub check_filesystem {
# Warning = percentage of used space >= $warning and < $critical
# Critical = percentage of used space > $warning and >= $critical
# OK = percentage of used space < $warning and < $critical
my ($mounted_filesystem, $warning, $critical) = @_;
foreach $element (keys %mounted) {
if ($mounted{$element} eq $mounted_filesystem) {
my $warning_result = $totalspace{$element}*(100-$warning)/100;
my $critical_result = $totalspace{$element}*(100-$critical)/100;
my $result_percent = $freespace{$element}*100/$totalspace{$element};
if (($freespace{$element} <= $warning_result) && ($freespace{$element} > $critical_result)) {
printf "Only %d M (%d%s) free\n",$freespace{$element}/1024,$result_percent,"%";
exit 1;
} elsif ($freespace{$element} <= $critical_result) {
printf "Only %d M (%d%s) free\n",$freespace{$element}/1024,$result_percent,"%";
exit 2;
} else {
printf "Disk ok - %d M (%d%s) free\n",$freespace{$element}/1024,$result_percent,"%";
exit 0;
}
}
}
print "$mounted_filesystem doesn't exist in $target_host\n\n";
exit -1;
}
sub check_filesystemID1{
# Warning = percentage of used space >= $warning and < $critical
# Critical = percentage of used space > $warning and >= $critical
# OK = percentage of used space < $warning and < $critical
my ($fsid1, $warning, $critical) = @_;
foreach $element (keys %totalspace) {
if ($element eq $fsid1) {
my $warning_result = $totalspace{$element}*(100-$warning)/100;
my $critical_result = $totalspace{$element}*(100-$critical)/100;
my $result_percent = $freespace{$element}*100/$totalspace{$element};
if (($freespace{$element} <= $warning_result) && ($freespace{$element} >= $critical_result)) {
printf "Only %d M (%d%s) free\n",$freespace{$element}/1024,$result_percent,"%";
exit 1;
} elsif ($freespace{$element} <= $critical_result) {
printf "Only %d M (%d%s) free\n",$freespace{$element}/1024,$result_percent,"%";
exit 2;
} else {
printf "Disk ok - %d M (%d%s) free\n",$freespace{$element}/1024,$result_percent,"%";
exit 0;
}
}
}
print "$fsid1 doesn't exist in $target_host\n\n";
exit -1;
}
sub check_cpu_5min {
my ($cpu, $warn, $crit) = @_;
if ($cpu >= $crit) {
print "Critical- 5-min load: $cpu\n";
exit 2;
} elsif ($cpu >= $warn) {
print "Warning - 5-min load: $cpu\n";
exit 1;
} else {
print "Load ok - 5-min load: $cpu\n";
exit 0;
}
}
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