Arch Linux

simonszu

Member

Registered: 2017-11-08

Posts: 8

[Icinga2] check_memory plugin does not run

Hi,

i'd like to monitor an Arch Linux host with Icinga2. Therefore, i installed the "monitoring-plugins" package to get the usual Nagios/Icinga plugins. However, the check_memory plugin throws an error.

$ ./check_memory                                                                                                                                                                         [09:44:20]
Can't call method "new" on an undefined value at ./check_memory line 55.

The exakt same plugin executes nicely on a Debian Host. The only difference i can spot is that Debian is running Perl 5.24.1 and Arch is running 5.26.1. Since the monitoring-plugins are available in the community repo and not via AUR, i assume the plugins to generally be okay, so that the fault has to be on my side.

I inspected the plugin, and, according to my limited understanding of Perl, this is the problem:

my $plugin_module;
BEGIN {
        $plugin_module = load_module( 'Monitoring::Plugin', 'Nagios::Plugin' );
}

$PROGNAME = "check_memory";
$VERSION = '1.0.1';
$FREECMD = '/usr/bin/free';
$UNIT = 'M';

my $np = $plugin_module->new(
  usage => "Usage: %s [ -w <warning_threshold> ] [ -c <critical_threshold> ]\n"
    . '   [ -u <unit> ]',
  version => $VERSION,
  plugin  => $PROGNAME,
  blurb => 'Check free(1) data against given tresholds',
  timeout => 30,
);

Somehow, it cannot execute "new" on $plugin_module, maybe because the modules listed in load_module aren't available - but shouldn't they be available as a dependency or something?