216 lines
6.6 KiB
Perl
216 lines
6.6 KiB
Perl
#
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# Copyright 2020 Centreon (http://www.centreon.com/)
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#
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# Centreon is a full-fledged industry-strength solution that meets
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# the needs in IT infrastructure and application monitoring for
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# service performance.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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package os::linux::local::mode::memory;
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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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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, $class;
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$options{options}->add_options(arguments => {
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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/meminfo /etc/redhat-release 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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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 '" . $self->{option_results}->{warning} . "'.");
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$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 '" . $self->{option_results}->{critical} . "'.");
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$self->{output}->option_exit();
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}
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}
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sub check_rhel_version {
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my ($self, %options) = @_;
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$self->{rhel_71} = 0;
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return if ($options{stdout} !~ /(?:Redhat|CentOS).*?release\s+(\d+)\.(\d+)/mi);
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$self->{rhel_71} = 1 if ($1 >= 7 && $2 >= 1);
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}
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sub run {
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my ($self, %options) = @_;
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my ($stdout) = centreon::plugins::misc::execute(
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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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no_quit => 1
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);
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# Buffer can be missing. In Openvz container for example.
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my $buffer_used = 0;
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my ($cached_used, $free, $total_size, $slab_used);
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foreach (split(/\n/, $stdout)) {
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if (/^MemTotal:\s+(\d+)/i) {
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$total_size = $1 * 1024;
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} elsif (/^Cached:\s+(\d+)/i) {
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$cached_used = $1 * 1024;
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} elsif (/^Buffers:\s+(\d+)/i) {
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$buffer_used = $1 * 1024;
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} elsif (/^Slab:\s+(\d+)/i) {
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$slab_used = $1 * 1024;
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} elsif (/^MemFree:\s+(\d+)/i) {
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$free = $1 * 1024;
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}
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}
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if (!defined($total_size) || !defined($cached_used) || !defined($free)) {
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$self->{output}->add_option_msg(short_msg => 'Some informations missing.');
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$self->{output}->option_exit();
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}
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$self->check_rhel_version(stdout => $stdout);
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my $physical_used = $total_size - $free;
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my $nobuf_used = $physical_used - $buffer_used - $cached_used;
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$nobuf_used -= $slab_used if ($self->{rhel_71} == 1);
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my $prct_used = $nobuf_used * 100 / $total_size;
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my $exit = $self->{perfdata}->threshold_check(value => $prct_used, threshold => [ { label => 'critical', 'exit_litteral' => 'critical' }, { label => 'warning', exit_litteral => 'warning' } ]);
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my ($nobuf_value, $nobuf_unit) = $self->{perfdata}->change_bytes(value => $nobuf_used);
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my ($buffer_value, $buffer_unit) = $self->{perfdata}->change_bytes(value => $buffer_used);
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my ($cached_value, $cached_unit) = $self->{perfdata}->change_bytes(value => $cached_used);
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$self->{output}->output_add(
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severity => $exit,
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short_msg => sprintf(
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"Ram used (-buffers/cache) %s (%.2f%%), Buffer: %s, Cached: %s",
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$nobuf_value . " " . $nobuf_unit, $prct_used,
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$buffer_value . " " . $buffer_unit,
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$cached_value . " " . $cached_unit
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)
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);
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$self->{output}->perfdata_add(
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label => "cached", unit => 'B',
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value => $cached_used,
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min => 0
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);
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$self->{output}->perfdata_add(
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label => "buffer", unit => 'B',
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value => $buffer_used,
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min => 0
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);
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$self->{output}->perfdata_add(
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label => "used", unit => 'B',
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value => $nobuf_used,
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warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning', total => $total_size),
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critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical', total => $total_size),
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min => 0, max => $total_size
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);
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$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 physical memory (need '/proc/meminfo' 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/meminfo 2>&1').
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=back
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=cut
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