160 lines
4.6 KiB
Perl
Executable File
160 lines
4.6 KiB
Perl
Executable File
#!/usr/bin/perl -w
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=head1 NAME
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snmp__mikrotik - monitor Mikrotik routers via SNMP
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=head1 APPLICABLE SYSTEMS
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Mikrotik Routers
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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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=head1 MAGIC MARKERS
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#%# family=snmpauto
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#%# capabilities=snmpconf
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=head1 BUGS
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None known.
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=head1 AUTHOR
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Copyright (C) 2020 Alejandro Suarez (teconecta.es)
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Based on snmp__if_ plugin.
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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 Net::SNMP;
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my $DEBUG = 0;
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my $host = $ENV{host} || undef;
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my $port = $ENV{port} || 161;
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my $community = $ENV{community} || "public";
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my $sysFlashUsageOID = "1.3.6.1.2.1.25.2.3.1.6.131072";
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my $sysFlashTotalOID = "1.3.6.1.2.1.25.2.3.1.5.131072";
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my $sysRAMUsageOID = "1.3.6.1.2.1.25.2.3.1.6.65536";
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my $sysRAMTotalOID = "1.3.6.1.2.1.25.2.3.1.5.65536";
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my $sysTempOID = "1.3.6.1.4.1.14988.1.1.3.10.0";
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my $response;
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if (defined $ARGV[0] and $ARGV[0] eq "snmpconf") {
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print "require $sysFlashUsageOID ^\\d\n";
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print "require $sysFlashTotalOID ^\\d\n";
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print "require $sysRAMUsageOID ^\\d\n";
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print "require $sysRAMTotalOID ^\\d\n";
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exit 0;
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}
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if ($0 =~ /^(?:|.*\/)snmp_([^_]+)_mikrotik$/) {
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$host = $1;
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if ($host =~ /^([^:]+):(\d+)$/) {
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$host = $1;
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$port = $2;
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}
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} elsif (!defined($host)) {
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print "# Debug: $0 -- $1\n" if $DEBUG;
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die "# Error: couldn't understand what I'm supposed to monitor.";
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}
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my ($session, $error) = Net::SNMP->session(
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-hostname => $host,
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-community => $community,
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-port => $port
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);
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die "Croaking: $error" unless (defined ($session));
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if ($ARGV[0] and $ARGV[0] eq "config") {
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print "host_name $host\n";
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$response = $session->get_request($sysFlashTotalOID);
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if (defined $response) {
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print "multigraph flash\n";
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print "graph_args --base 1024 -l 0 --vertical-label Bytes --upper-limit " . ($response->{$sysFlashTotalOID} * 1024) . "\n";
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print "graph_title Disk usage\n";
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print "graph_category disk\n";
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print "graph_info This graph shows the router's flash disk usage.\n";
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print "graph_order Total Used\n";
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print "graph_vlabel bytes\n";
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print "sysFlashTotal.label Total Memory\n";
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print "sysFlashTotal.draw AREA\n";
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print "sysFlashUsage.label Used Memory\n";
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print "sysFlashUsage.draw AREA\n";
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}
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$response = $session->get_request($sysRAMTotalOID);
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if (defined $response) {
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print "multigraph ram\n";
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print "graph_args --base 1024 -l 0 --vertical-label Bytes --upper-limit " . ($response->{$sysRAMTotalOID} * 1024) . "\n";
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print "graph_title Memory usage\n";
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print "graph_category system\n";
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print "graph_info This graph shows the router's memory usage.\n";
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print "graph_order Total Used\n";
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print "graph_vlabel bytes\n";
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print "sysRAMTotal.label Total Memory\n";
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print "sysRAMTotal.draw AREA\n";
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print "sysRAMUsage.label Used Memory\n";
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print "sysRAMUsage.draw AREA\n";
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}
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$response = $session->get_request($sysTempOID);
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if (defined $response) {
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print "multigraph temp\n";
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print "graph_vlabel degC \n";
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print "graph_title Temperature\n";
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print "graph_category sensors\n";
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print "graph_info This graph shows the router's temperature.\n";
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print "sysTemp.label Temperature\n";
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print "sysTemp.type GAUGE\n";
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}
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exit 0 unless (($ENV{MUNIN_CAP_DIRTYCONFIG} || 0) == 1);
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}
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print "multigraph flash\n";
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$response = $session->get_request(-varbindlist => [$sysFlashUsageOID, $sysFlashTotalOID]);
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if (defined $response) {
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print "sysFlashUsage.value ", $response->{$sysFlashUsageOID}*1024, "\n";
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print "sysFlashTotal.value ", $response->{$sysFlashTotalOID}*1024, "\n";
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} else {
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print "sysFlashUsage.value U\n";
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print "sysFlashTotal.value U\n";
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}
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print "multigraph ram\n";
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$response = $session->get_request(-varbindlist => [$sysRAMUsageOID, $sysRAMTotalOID]);
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if (defined $response) {
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print "sysRAMUsage.value ", $response->{$sysRAMUsageOID}*1024, "\n";
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print "sysRAMTotal.value ", $response->{$sysRAMTotalOID}*1024, "\n";
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} else {
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print "sysRAMUsage.value U\n";
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print "sysRAMTotal.value U\n";
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}
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print "multigraph temp\n";
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$response = $session->get_request(-varbindlist => [$sysTempOID]);
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if (defined $response) {
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print "sysTemp.value ", $response->{$sysTempOID}/10, "\n";
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} else {
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print "sysTemp.value U\n";
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}
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# vim:syntax=perl
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