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#!/usr/bin/perl -T
use strict;
use warnings;
use VServer;
use Nagios::Plugin;
use Nagios::Plugin::Functions;
our $VERSION = '2.1';
sub init_nagios_plugin() {
my $plugin = Nagios::Plugin->new(
usage => "Usage: %s [-h|--help] [-w|--warnings=...] " .
"[-c|--critical=...] [-d|--domain=...] " .
"[-s|--service=...] [vserver-name]",
version => $VERSION,
blurb => "This plugin could monitor the load of vserver guests."
);
$plugin->add_arg(
spec => 'w|warning=s',
help => "Warning thresholds for the different load types.",
label => "INTEGER[,INTEGER[,INTEGER]]",
);
$plugin->add_arg(
spec => 'c|critical=s',
help => "Critical thresholds for the different load types.",
label => "INTEGER[,INTEGER[,INTEGER]]",
);
$plugin->add_arg(
spec => 'd|domain=s',
help => 'Domainname to append in bulk mode or to stip ' .
'in single host mode.',
label => "DOMAIN",
);
$plugin->add_arg(
spec => 's|service=s',
help => 'Name of the service, as defined in the config of ' .
'the monitoring server. (default: ' .
Nagios::Plugin::Functions::get_shortname() . ')',
label => 'SERVICE',
);
return $plugin;
}
sub parse_thresholds($) {
my $arg = shift;
if ($arg) {
if ($arg =~ m/^([0-9]*),([0-9]*),([0-9]*)$/) {
return ($1, $2, $3);
}
if ($arg =~ m/^([0-9]*),([0-9]*)$/) {
return ($1, $2, $2);
}
if ($arg =~ m/^([0-9]*)$/) {
return ($1, $1, $1);
}
}
return undef;
}
sub output_results($$$$) {
my $n = shift;
my $name = shift;
my $statuses = shift;
my $output = shift;
my $service = $ENV{NAGIOS_PLUGIN};
my $status = $n->max_state(@{$statuses});
$status = Nagios::Plugin::Functions::UNKNOWN unless
defined $status && exists $Nagios::Plugin::Functions::STATUS_TEXT{$status};
my $result = $Nagios::Plugin::Functions::STATUS_TEXT{$status};
my $perf = $n->all_perfoutput();
print "$name\t$service\t$status\t$result - load average:$output | $perf\n\x17";
}
sub handle_vserver($$$;$$) {
my $id = shift;
my $warn = shift;
my $crit = shift;
my $name = shift;
my $domain = shift;
my $n = init_nagios_plugin();
my $load = VServer::get_loadavg($id);
if ($load) {
my @status = [ UNKNOWN ];
my $output = "";
for my $key (qw( load1 load5 load15 )) {
$n->add_perfdata(label => $key,
value => $load->{$key},
warning => $warn->{$key},
critical => $crit->{$key},
min => 0,
);
push(@status,
$n->check_threshold(check => $load->{$key},
warning => $warn->{$key},
critical => $crit->{$key}
)
);
$output .= " $load->{$key}";
}
if ($name) {
$n->nagios_exit($n->max_state(@status), "load average:$output");
}
else {
$name = VServer::get_name($id);
output_results($n, "$name$domain", \@status, $output);
}
}
}
# fix taint mode
$ENV{PATH} = undef;
$ENV{'NAGIOS_PLUGIN'} = $1 if ($0 =~ m/(\w[\w\/]*\w)/);
$ENV{'NAGIOS_PLUGIN'} = Nagios::Plugin::Functions::get_shortname();
my $n = init_nagios_plugin();
$n->getopts();
alarm $n->opts->timeout;
my (%warn, %crit);
($warn{'load1'}, $warn{'load5'}, $warn{'load15'}) = parse_thresholds($n->opts->w);
($crit{'load1'}, $crit{'load5'}, $crit{'load15'}) = parse_thresholds($n->opts->c);
for my $load (qw( load1 load5 load15 )) {
if (defined $crit{$load} && defined $warn{$load} && $crit{$load} < $warn{$load}) {
die("Parameter inconsistency: warning load is greater " .
"than critical load for '$load'");
}
}
$ENV{'NAGIOS_PLUGIN'} = $1 if ($n->opts->s && $n->opts->s =~ m/^(.+)$/);
my $domain = '';
$domain = ('.' . $n->opts->d) if $n->opts->d;
if (my $vserver = shift) {
$domain = quotemeta $domain;
$vserver =~ s/$domain$//;
my $context = VServer::get_context_id_by_name($vserver);
unless ($context) {
$n->nagios_exit(UNKNOWN, "vserver '$vserver' not found");
}
handle_vserver($context, \%warn, \%crit, $vserver);
$n->nagios_exit(UNKNOWN, 'unable to parse loadavg');
}
else {
for my $dir (glob("/proc/virtual/*/")) {
my $id = VServer::get_context_id_by_dir($dir);
handle_vserver($id, \%warn, \%crit, undef, $domain);
}
}
|
