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centreon-plugins/snmp_standard/mode/memory.pm

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#
# Copyright 2016 Centreon (http://www.centreon.com/)
#
# Centreon is a full-fledged industry-strength solution that meets
# the needs in IT infrastructure and application monitoring for
# service performance.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
package snmp_standard::mode::memory;
use base qw(centreon::plugins::mode);
use strict;
use warnings;
sub new {
my ($class, %options) = @_;
my $self = $class->SUPER::new(package => __PACKAGE__, %options);
bless $self, $class;
$self->{version} = '1.0';
$options{options}->add_options(arguments =>
{
"warning:s" => { name => 'warning' },
"critical:s" => { name => 'critical' },
"swap" => { name => 'check_swap' },
"warning-swap:s" => { name => 'warning_swap' },
"critical-swap:s" => { name => 'critical_swap' },
"no-swap:s" => { name => 'no_swap' },
});
$self->{no_swap} = 'critical';
return $self;
}
sub check_options {
my ($self, %options) = @_;
$self->SUPER::init(%options);
if (($self->{perfdata}->threshold_validate(label => 'warning', value => $self->{option_results}->{warning})) == 0) {
$self->{output}->add_option_msg(short_msg => "Wrong warning threshold '" . $self->{option_results}->{warning} . "'.");
$self->{output}->option_exit();
}
if (($self->{perfdata}->threshold_validate(label => 'critical', value => $self->{option_results}->{critical})) == 0) {
$self->{output}->add_option_msg(short_msg => "Wrong critical threshold '" . $self->{option_results}->{critical} . "'.");
$self->{output}->option_exit();
}
if (defined($self->{option_results}->{check_swap})) {
if (($self->{perfdata}->threshold_validate(label => 'warning-swap', value => $self->{option_results}->{warning_swap})) == 0) {
$self->{output}->add_option_msg(short_msg => "Wrong warning-swap threshold '" . $self->{option_results}->{warning_swap} . "'.");
$self->{output}->option_exit();
}
if (($self->{perfdata}->threshold_validate(label => 'critical-swap', value => $self->{option_results}->{critical_swap})) == 0) {
$self->{output}->add_option_msg(short_msg => "Wrong critical-swap threshold '" . $self->{option_results}->{critical_swap} . "'.");
$self->{output}->option_exit();
}
if (defined($self->{option_results}->{no_swap}) && $self->{option_results}->{no_swap} ne '') {
if ($self->{output}->is_litteral_status(status => $self->{option_results}->{no_swap}) == 0) {
$self->{output}->add_option_msg(short_msg => "Wrong --no-swap status '" . $self->{option_results}->{no_swap} . "'.");
$self->{output}->option_exit();
}
$self->{no_swap} = $self->{option_results}->{no_swap};
}
}
}
sub run {
my ($self, %options) = @_;
$self->{snmp} = $options{snmp};
my $oid_memTotalReal = '.1.3.6.1.4.1.2021.4.5.0';
my $oid_memAvailReal = '.1.3.6.1.4.1.2021.4.6.0';
my $oid_memShared = '.1.3.6.1.4.1.2021.4.13.0';
my $oid_memBuffer = '.1.3.6.1.4.1.2021.4.14.0';
my $oid_memCached = '.1.3.6.1.4.1.2021.4.15.0';
my $oid_memTotalSwap = '.1.3.6.1.4.1.2021.4.3.0'; # KB
my $oid_memAvailSwap = '.1.3.6.1.4.1.2021.4.4.0'; # KB
my $oids = [$oid_memTotalReal, $oid_memAvailReal,
$oid_memShared, $oid_memBuffer, $oid_memCached];
if (defined($self->{option_results}->{check_swap})) {
push @$oids, ($oid_memTotalSwap, $oid_memAvailSwap);
}
my $result = $self->{snmp}->get_leef(oids => $oids,
nothing_quit => 1);
my $shared_used = defined($result->{$oid_memShared}) ? $result->{$oid_memShared} * 1024 : 0;
my $cached_used = $result->{$oid_memCached} * 1024;
my $buffer_used = $result->{$oid_memBuffer} * 1024;
my $physical_used = ($result->{$oid_memTotalReal} * 1024) - ($result->{$oid_memAvailReal} * 1024);
my $nobuf_used = $physical_used - $buffer_used - $cached_used;
my $total_size = $result->{$oid_memTotalReal} * 1024;
my $prct_used = $nobuf_used * 100 / $total_size;
my $exit = $self->{perfdata}->threshold_check(value => $prct_used, threshold => [ { label => 'critical', exit_litteral => 'critical' }, { label => 'warning', exit_litteral => 'warning' } ]);
my ($total_value, $total_unit) = $self->{perfdata}->change_bytes(value => $total_size);
my ($nobuf_value, $nobuf_unit) = $self->{perfdata}->change_bytes(value => $nobuf_used);
my ($buffer_value, $buffer_unit) = $self->{perfdata}->change_bytes(value => $buffer_used);
my ($cached_value, $cached_unit) = $self->{perfdata}->change_bytes(value => $cached_used);
my ($shared_value, $shared_unit) = $self->{perfdata}->change_bytes(value => $shared_used);
$self->{output}->output_add(severity => $exit,
short_msg => sprintf("Ram Total: %s, Used (-buffers/cache): %s (%.2f%%), Buffer: %s, Cached: %s, Shared: %s",
$total_value . " " . $total_unit,
$nobuf_value . " " . $nobuf_unit, $prct_used,
$buffer_value . " " . $buffer_unit,
$cached_value . " " . $cached_unit,
$shared_value . " " . $shared_unit));
$self->{output}->perfdata_add(label => "cached", unit => 'B',
value => $cached_used,
min => 0);
$self->{output}->perfdata_add(label => "buffer", unit => 'B',
value => $buffer_used,
min => 0);
$self->{output}->perfdata_add(label => "used", unit => 'B',
value => $nobuf_used,
warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning', total => $total_size, cast_int => 1),
critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical', total => $total_size, cast_int => 1),
min => 0, max => $total_size);
if (defined($self->{option_results}->{check_swap})) {
if ($result->{$oid_memTotalSwap} == 0) {
$self->{output}->output_add(severity => $self->{no_swap},
short_msg => 'No active swap.');
$self->{output}->display();
$self->{output}->exit();
}
$total_size = $result->{$oid_memTotalSwap} * 1024;
my $swap_used = ($result->{$oid_memTotalSwap} - $result->{$oid_memAvailSwap}) * 1024;
$prct_used = $swap_used * 100 / $total_size;
$exit = $self->{perfdata}->threshold_check(value => $prct_used, threshold => [ { label => 'critical-swap', 'exit_litteral' => 'critical' }, { label => 'warning-swap', exit_litteral => 'warning' } ]);
my ($total_value, $total_unit) = $self->{perfdata}->change_bytes(value => $total_size);
my ($swap_used_value, $swap_used_unit) = $self->{perfdata}->change_bytes(value => $swap_used);
my ($swap_free_value, $swap_free_unit) = $self->{perfdata}->change_bytes(value => ($total_size - $swap_used));
$self->{output}->output_add(severity => $exit,
short_msg => sprintf("Swap Total: %s Used: %s (%.2f%%) Free: %s (%.2f%%)",
$total_value . " " . $total_unit,
$swap_used_value . " " . $swap_used_unit, $prct_used,
$swap_free_value . " " . $swap_free_unit, (100 - $prct_used)));
$self->{output}->perfdata_add(label => "swap", unit => 'B',
value => $swap_used,
warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning-swap', total => $total_size, cast_int => 1),
critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical-swap', total => $total_size, cast_int => 1),
min => 0, max => $total_size);
}
$self->{output}->display();
$self->{output}->exit();
}
1;
__END__
=head1 MODE
Check physical memory (UCD-SNMP-MIB).
=over 8
=item B<--warning>
Threshold warning in percent.
=item B<--critical>
Threshold critical in percent.
=item B<--swap>
Check swap also.
=item B<--warning-swap>
Threshold warning in percent.
=item B<--critical-swap>
Threshold critical in percent.
=item B<--no-swap>
Threshold if no active swap (default: 'critical').
=back
=cut
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