171 lines
4.0 KiB
Perl
Executable File
171 lines
4.0 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# -*- cperl -*-
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=head1 NAME
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snmp__screenos_ - SNMP plugin to monitor Juniper ScreenOS based routers
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=head1 APPLICABLE SYSTEMS
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This has been developed against a Juniper SSG5-Serial router, but
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should work with any ScreenOS-based router as manufactured by Juniper.
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Using a command such as "munin-node-configure --snmp
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switch.langfeldt.net --snmpversion 2c --snmpcommunity public | sh -x"
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should identify whether this plugin can apply.
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=head1 CONFIGURATION
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As a rule SNMP plugins need site specific configuration. The default
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configuration (shown here) will only work on insecure sites/devices:
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[snmp_*]
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env.version 2
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env.community public
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In general SNMP is not very secure at all unless you use SNMP version
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3 which supports authentication and privacy (encryption). But in any
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case the community string for your devices should not be "public".
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Please see 'perldoc Munin::Plugin::SNMP' for further configuration
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information.
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=head1 MIB INFORMATION
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This plugin requires NETSCREEN-RESOURCE-MIB information.
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=head1 MAGIC MARKERS
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#%# family=snmpauto
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#%# capabilities=snmpconf
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=head1 AUTHOR
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Copyright (C) 2012 Diego Elio Pettenò.
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=head1 LICENSE
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GPLv2
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=cut
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use strict;
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use Munin::Plugin;
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use Munin::Plugin::SNMP;
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# This corresponds to NETSCREEN-SMI::netscreenResource
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my $oidBase = '1.3.6.1.4.1.3224.16';
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my $oidCpuAvg = "$oidBase.1.1";
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my $oidCpuLast1Min = "$oidBase.1.2";
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my $oidCpuLast5Min = "$oidBase.1.3";
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my $oidCpuLast15Min = "$oidBase.1.4";
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my $oidMemAllocate = "$oidBase.2.1";
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my $oidMemLeft = "$oidBase.2.2";
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my $oidSessAllocate = "$oidBase.3.2";
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my $oidSessMaximum = "$oidBase.3.3";
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my $oidSessFailed = "$oidBase.3.4";
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if (defined $ARGV[0] and $ARGV[0] eq "snmpconf") {
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print "require $oidBase.[23].[13].0";
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exit 0;
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}
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my $session = Munin::Plugin::SNMP->session();
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my $data = $session->get_entries(-columns => [$oidCpuAvg,
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$oidCpuLast1Min,
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$oidCpuLast5Min,
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$oidCpuLast15Min,
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$oidMemAllocate,
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$oidMemLeft,
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$oidSessAllocate,
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$oidSessMaximum,
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$oidSessFailed ]);
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if ($ARGV[0] and $ARGV[0] eq "config") {
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my ($host) = Munin::Plugin::SNMP->config_session();
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my $memTotal = $data->{"$oidMemAllocate.0"} + $data->{"$oidMemLeft.0"};
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# this is the closet I can get to the yellow/red on the ScreenOS
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# interface.
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my $memWarning = int($memTotal * 0.75 + 0.5);
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my $memCritical = int($memTotal * 0.85 + 0.5);
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my $sessWarning = int($data->{"$oidSessMaximum.0"} * 0.75 + 0.5);
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my $sessCritical = int($data->{"$oidSessMaximum.0"} * 0.85 + 0.5);
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print <<END;
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host_name $host
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multigraph screenos_memory
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graph_title Memory allocation
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graph_vlabel bytes
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graph_args --base 1024
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graph_category system
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memory.label Memory
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memory.min 0
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memory.max $memTotal
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memory.warning $memWarning
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memory.critical $memCritical
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multigraph screenos_sessions
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graph_title Sessions allocation
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graph_vlabel Count
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graph_category system
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sessions.label Active Sessions
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sessions.min 0
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sessions.max $data->{"$oidSessMaximum.0"}
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sessions.warning $sessWarning
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sessions.critical $sessCritical
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failed.label Failed Sessions
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failed.min 0
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failed.critical 1
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multigraph screenos_cpu
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graph_title CPU Utilization
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graph_vlabel Percentage
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graph_category system
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average.label Average
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average.min 0
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average.max 100
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average.warning 75
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average.critical 85
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last1.label Last minute
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last1.min 0
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last1.max 100
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last1.warning 75
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last1.critical 85
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last5.label Last 5 minutes
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last5.min 0
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last5.max 100
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last5.warning 75
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last5.critical 85
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last15.label Last 15 minutes
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last15.min 0
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last15.max 100
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last15.warning 75
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last15.critical 85
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END
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exit 0;
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}
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print <<END;
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multigraph screenos_memory
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memory.value $data->{"$oidMemAllocate.0"}
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multigraph screenos_sessions
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sessions.value $data->{"$oidSessAllocate.0"}
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failed.value $data->{"$oidSessFailed.0"}
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multigraph screenos_cpu
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average.value $data->{"$oidCpuAvg.0"}
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last1.value $data->{"$oidCpuLast1Min.0"}
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last5.value $data->{"$oidCpuLast5Min.0"}
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last15.value $data->{"$oidCpuLast15Min.0"}
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END
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