+ Add mode 'cpu' for 'linux' plugin
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Quentin Garnier
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138fe57e97
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71d67c0446
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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 : Quentin Garnier <qgarnier@merethis.com>
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#
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####################################################################################
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package os::linux::local::mode::cpu;
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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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use centreon::plugins::misc;
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use centreon::plugins::statefile;
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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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$options{options}->add_options(arguments =>
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{
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"hostname:s" => { name => 'hostname' },
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"remote" => { name => 'remote' },
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"ssh-option:s@" => { name => 'ssh_option' },
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"ssh-path:s" => { name => 'ssh_path' },
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"ssh-command:s" => { name => 'ssh_command', default => 'ssh' },
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"timeout:s" => { name => 'timeout', default => 30 },
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"sudo" => { name => 'sudo' },
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"command:s" => { name => 'command', default => 'cat' },
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"command-path:s" => { name => 'command_path' },
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"command-options:s" => { name => 'command_options', default => '/proc/stat 2>&1' },
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"warning:s" => { name => 'warning', },
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"critical:s" => { name => 'critical', },
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});
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$self->{statefile_cache} = centreon::plugins::statefile->new(%options);
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$self->{hostname} = undef;
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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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$self->{statefile_cache}->check_options(%options);
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$self->{hostname} = $self->{option_results}->{hostname};
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if (!defined($self->{hostname})) {
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$self->{hostname} = 'me';
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}
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}
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sub run {
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my ($self, %options) = @_;
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my $stdout = centreon::plugins::misc::execute(output => $self->{output},
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options => $self->{option_results},
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sudo => $self->{option_results}->{sudo},
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command => $self->{option_results}->{command},
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command_path => $self->{option_results}->{command_path},
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command_options => $self->{option_results}->{command_options});
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$self->{statefile_cache}->read(statefile => 'cache_linux_local_' . $self->{hostname} . '_' . $self->{mode});
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my $old_timestamp = $self->{statefile_cache}->get(name => 'last_timestamp');
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my $datas = {};
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$datas->{last_timestamp} = time();
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$self->{output}->output_add(severity => 'OK',
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short_msg => "CPUs usages are ok.");
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foreach (split(/\n/, $stdout)) {
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next if (!/cpu(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)/);
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my $cpu_number = $1;
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$datas->{'cpu_idle_' . $cpu_number} = $5;
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$datas->{'cpu_system_' . $cpu_number} = $4;
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$datas->{'cpu_user_' . $cpu_number} = $1;
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$datas->{'cpu_iowait_' . $cpu_number} = $6;
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if (!defined($old_timestamp)) {
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next;
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}
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my $old_cpu_idle = $self->{statefile_cache}->get(name => 'cpu_idle_' . $cpu_number);
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my $old_cpu_system = $self->{statefile_cache}->get(name => 'cpu_system_' . $cpu_number);
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my $old_cpu_user = $self->{statefile_cache}->get(name => 'cpu_user_' . $cpu_number);
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my $old_cpu_iowait = $self->{statefile_cache}->get(name => 'cpu_iowait_' . $cpu_number);
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if (!defined($old_cpu_system) || !defined($old_cpu_idle) || !defined($old_cpu_user) || !defined($old_cpu_iowait)) {
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next;
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}
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if ($datas->{'cpu_idle_' . $cpu_number} < $old_cpu_idle) {
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# We set 0. Has reboot.
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$old_cpu_user = 0;
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$old_cpu_idle = 0;
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$old_cpu_system = 0;
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$old_cpu_iowait = 0;
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}
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my $total_elapsed = ($datas->{'cpu_idle_' . $cpu_number} + $datas->{'cpu_user_' . $cpu_number} + $datas->{'cpu_system_' . $cpu_number} + $datas->{'cpu_iowait_' . $cpu_number}) - ($old_cpu_user + $old_cpu_idle + $old_cpu_system + $old_cpu_iowait);
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my $idle_elapsed = $datas->{'cpu_idle_' . $cpu_number} - $old_cpu_idle;
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my $cpu_ratio_usetime = 100 * $idle_elapsed / $total_elapsed;
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$cpu_ratio_usetime = 100 - $cpu_ratio_usetime;
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my $exit_code = $self->{perfdata}->threshold_check(value => $cpu_ratio_usetime,
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threshold => [ { label => 'critical', 'exit_litteral' => 'critical' }, { label => 'warning', exit_litteral => 'warning' } ]);
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$self->{output}->output_add(long_msg => sprintf("CPU %d %.2f%%", $cpu_number, $cpu_ratio_usetime));
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if ($exit_code ne 'OK') {
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$self->{output}->output_add(severity => $exit_code,
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short_msg => sprintf("CPU %d %.2f%%", $cpu_number, $cpu_ratio_usetime));
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}
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$self->{output}->perfdata_add(label => 'cpu_' . $cpu_number, unit => '%',
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value => sprintf("%.2f", $cpu_ratio_usetime),
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warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning'),
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critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical'),
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min => 0, max => 100);
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}
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$self->{statefile_cache}->write(data => $datas);
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if (!defined($old_timestamp)) {
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$self->{output}->output_add(severity => 'OK',
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short_msg => "Buffer creation...");
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}
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$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 system CPUs (need '/proc/stat' file).
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=over 8
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=item B<--warning>
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Threshold warning in percent.
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=item B<--critical>
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Threshold critical in percent.
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=item B<--remote>
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Execute command remotely in 'ssh'.
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=item B<--hostname>
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Hostname to query (need --remote).
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=item B<--ssh-option>
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Specify multiple options like the user (example: --ssh-option='-l=centreon-engine" --ssh-option='-p=52").
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=item B<--ssh-path>
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Specify ssh command path (default: none)
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=item B<--ssh-command>
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Specify ssh command (default: 'ssh'). Useful to use 'plink'.
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=item B<--timeout>
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Timeout in seconds for the command (Default: 30).
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=item B<--sudo>
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Use 'sudo' to execute the command.
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=item B<--command>
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Command to get information (Default: 'cat').
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Can be changed if you have output in a file.
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=item B<--command-path>
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Command path (Default: none).
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=item B<--command-options>
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Command options (Default: '/proc/stat 2>&1').
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=back
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=cut
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@ -47,7 +47,8 @@ sub new {
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$self->{version} = '0.1';
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%{$self->{modes}} = (
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'cmd-return' => 'os::linux::local::mode::cmdreturn',
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'cpu' => 'os::linux::local::mode::cpu',
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'cmd-return' => 'os::linux::local::mode::cmdreturn',
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);
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return $self;
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