Create fdusage.pm
Monitor file descriptor percentage usage of your JVM
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################################################################################
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# Copyright 2005-2013 MERETHIS
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# Centreon is developped by : Julien Mathis and Romain Le Merlus under
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# GPL Licence 2.0.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation ; either version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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# PARTICULAR PURPOSE. See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, see <http://www.gnu.org/licenses>.
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#
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# Linking this program statically or dynamically with other modules is making a
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# combined work based on this program. Thus, the terms and conditions of the GNU
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# General Public License cover the whole combination.
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#
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# As a special exception, the copyright holders of this program give MERETHIS
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# permission to link this program with independent modules to produce an executable,
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# regardless of the license terms of these independent modules, and to copy and
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# distribute the resulting executable under terms of MERETHIS choice, provided that
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# MERETHIS also meet, for each linked independent module, the terms and conditions
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# of the license of that module. An independent module is a module which is not
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# derived from this program. If you modify this program, you may extend this
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# exception to your version of the program, but you are not obliged to do so. If you
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# do not wish to do so, delete this exception statement from your version.
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#
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# For more information : contact@centreon.com
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# Authors : Simon Bomm <sbomm@centreon.com>
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#
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####################################################################################
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package centreon::common::jvm::mode::fdusage;
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use base qw(centreon::plugins::mode);
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use strict;
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use warnings;
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sub new {
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my ($class, %options) = @_;
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my $self = $class->SUPER::new(package => __PACKAGE__, %options);
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bless $self, $class;
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$self->{version} = '1.0';
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$options{options}->add_options(arguments =>
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{
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"warning:s" => { name => 'warning', default => '80' },
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"critical:s" => { name => 'critical', default => '90' },
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});
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return $self;
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}
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sub check_options {
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my ($self, %options) = @_;
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$self->SUPER::init(%options);
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if (($self->{perfdata}->threshold_validate(label => 'warning', value => $self->{option_results}->{warning})) == 0) {
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$self->{output}->add_option_msg(short_msg => "Wrong warning threshold '" . $self->{warning} . "'.");
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$self->{output}->option_exit();
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}
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if (($self->{perfdata}->threshold_validate(label => 'critical', value => $self->{option_results}->{critical})) == 0) {
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$self->{output}->add_option_msg(short_msg => "Wrong critical threshold '" . $self->{critical} . "'.");
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$self->{output}->option_exit();
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}
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}
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sub run {
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my ($self, %options) = @_;
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# $options{snmp} = snmp object
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$self->{connector} = $options{custom};
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$self->{request} = [
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{ mbean => "java.lang:type=OperatingSystem", attributes => [ { name => 'MaxFileDescriptorCount' }, { name => 'OpenFileDescriptorCount' } ] }
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];
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my $result = $self->{connector}->get_attributes(request => $self->{request}, nothing_quit => 1);
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my $prct_fd = $result->{"java.lang:type=OperatingSystem"}->{OpenFileDescriptorCount} / $result->{"java.lang:type=OperatingSystem"}->{MaxFileDescriptorCount} * 100;
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my $exit = $self->{perfdata}->threshold_check(value => $prct_fd,
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threshold => [ { label => 'critical', exit_litteral => 'critical' }, { label => 'warning', 'exit_litteral' => 'warning' } ]);
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$self->{output}->perfdata_add(label => 'fd',
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value => $result->{"java.lang:type=OperatingSystem"}->{OpenFileDescriptorCount},
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warning => $self->{option_results}->{warning} / 100 * $result->{"java.lang:type=OperatingSystem"}->{MaxFileDescriptorCount},
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critical => $self->{option_results}->{critical} / 100 * $result->{"java.lang:type=OperatingSystem"}->{MaxFileDescriptorCount},
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min => 0, max => $result->{"java.lang:type=OperatingSystem"}->{MaxFileDescriptorCount});
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$self->{output}->output_add(severity => $exit,
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short_msg => sprintf("File descriptor percentage usage: %2.f%%", $prct_fd));
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$self->{output}->display();
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$self->{output}->exit();
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}
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1;
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__END__
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=head1 MODE
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Check number/percentage of file descriptors
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Example:
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perl centreon_plugins.pl --plugin=apps::tomcat::jmx::plugin --custommode=jolokia --url=http://10.30.2.22:8080/jolokia-war --mode=fd-usage --warning 60 --critical 75
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=over 8
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=item B<--warning>
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Threshold warning percentage concerning fd capacity
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=item B<--critical>
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Threshold critical percentage concerning fd capacity
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=back
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=cut
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