299 lines
11 KiB
Perl
299 lines
11 KiB
Perl
#
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# Copyright 2021 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 snmp_standard::mode::memory;
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use base qw(centreon::plugins::templates::counter);
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use strict;
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use warnings;
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sub custom_usage_output {
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my ($self, %options) = @_;
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return sprintf(
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'Ram Total: %s %s Used (-buffers/cache): %s %s (%.2f%%) Free: %s %s (%.2f%%)',
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$self->{perfdata}->change_bytes(value => $self->{result_values}->{total}),
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$self->{perfdata}->change_bytes(value => $self->{result_values}->{used}),
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$self->{result_values}->{prct_used},
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$self->{perfdata}->change_bytes(value => $self->{result_values}->{free}),
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$self->{result_values}->{prct_free}
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);
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}
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sub custom_swap_output {
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my ($self, %options) = @_;
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return sprintf(
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'Swap Total: %s %s Used: %s %s (%.2f%%) Free: %s %s (%.2f%%)',
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$self->{perfdata}->change_bytes(value => $self->{result_values}->{total}),
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$self->{perfdata}->change_bytes(value => $self->{result_values}->{used}),
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$self->{result_values}->{prct_used},
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$self->{perfdata}->change_bytes(value => $self->{result_values}->{free}),
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$self->{result_values}->{prct_free}
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);
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}
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sub set_counters {
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my ($self, %options) = @_;
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$self->{maps_counters_type} = [
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{ name => 'ram', type => 0, skipped_code => { -10 => 1 } },
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{ name => 'swap', type => 0, message_separator => ' - ', skipped_code => { -10 => 1 } }
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];
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$self->{maps_counters}->{ram} = [
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{ label => 'usage', nlabel => 'memory.usage.bytes', set => {
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key_values => [ { name => 'used' }, { name => 'free' }, { name => 'prct_used' }, { name => 'prct_free' }, { name => 'total' } ],
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closure_custom_output => $self->can('custom_usage_output'),
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perfdatas => [
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{ label => 'used', template => '%d', min => 0, max => 'total', unit => 'B', cast_int => 1 }
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]
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}
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},
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{ label => 'usage-free', display_ok => 0, nlabel => 'memory.free.bytes', set => {
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key_values => [ { name => 'free' }, { name => 'used' }, { name => 'prct_used' }, { name => 'prct_free' }, { name => 'total' } ],
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closure_custom_output => $self->can('custom_usage_output'),
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perfdatas => [
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{ label => 'free', template => '%d', min => 0, max => 'total', unit => 'B', cast_int => 1 }
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]
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}
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},
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{ label => 'usage-prct', display_ok => 0, nlabel => 'memory.usage.percentage', set => {
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key_values => [ { name => 'prct_used' }, { name => 'used' }, { name => 'free' }, { name => 'prct_free' }, { name => 'total' } ],
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closure_custom_output => $self->can('custom_usage_output'),
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perfdatas => [
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{ label => 'used_prct', template => '%.2f', min => 0, max => 100, unit => '%' }
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]
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}
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},
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{ label => 'buffer', nlabel => 'memory.buffer.bytes', set => {
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key_values => [ { name => 'memBuffer' } ],
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output_template => 'Buffer: %s %s',
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output_change_bytes => 1,
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perfdatas => [
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{ label => 'buffer', template => '%d', min => 0, unit => 'B' }
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]
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}
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},
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{ label => 'cached', nlabel => 'memory.cached.bytes', set => {
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key_values => [ { name => 'memCached' } ],
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output_template => 'Cached: %s %s',
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output_change_bytes => 1,
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perfdatas => [
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{ label => 'cached', template => '%d', min => 0, unit => 'B' }
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]
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}
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},
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{ label => 'shared', nlabel => 'memory.shared.bytes', set => {
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key_values => [ { name => 'memShared' } ],
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output_template => 'Shared: %s %s',
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output_change_bytes => 1,
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perfdatas => [
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{ label => 'shared', template => '%d', min => 0, unit => 'B' }
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]
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}
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}
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];
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$self->{maps_counters}->{swap} = [
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{ label => 'swap', nlabel => 'swap.usage.bytes', set => {
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key_values => [ { name => 'used' }, { name => 'free' }, { name => 'prct_used' }, { name => 'prct_free' }, { name => 'total' } ],
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closure_custom_output => $self->can('custom_swap_output'),
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perfdatas => [
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{ label => 'swap', template => '%d', min => 0, max => 'total', unit => 'B', cast_int => 1 }
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]
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}
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},
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{ label => 'swap-free', display_ok => 0, nlabel => 'swap.free.bytes', set => {
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key_values => [ { name => 'free' }, { name => 'used' }, { name => 'prct_used' }, { name => 'prct_free' }, { name => 'total' } ],
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closure_custom_output => $self->can('custom_swap_output'),
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perfdatas => [
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{ label => 'swap_free', template => '%d', min => 0, max => 'total',
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unit => 'B', cast_int => 1 }
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]
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}
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},
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{ label => 'swap-prct', display_ok => 0, nlabel => 'swap.usage.percentage', set => {
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key_values => [ { name => 'prct_used' } ],
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output_template => 'Swap Used : %.2f %%',
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perfdatas => [
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{ label => 'swap_prct', template => '%.2f', min => 0, max => 100, unit => '%' }
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]
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}
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}
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];
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}
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sub new {
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my ($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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'units:s' => { name => 'units', default => '%' },
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'free' => { name => 'free' },
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'swap' => { name => 'check_swap' },
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'patch-redhat' => { name => 'patch_redhat' },
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'redhat' => { name => 'redhat' }, # for legacy (do nothing)
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'autodetect-redhat' => { name => 'autodetect_redhat' } # for legacy (do nothing)
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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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# Compatibility
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$self->compat_threshold_counter(%options,
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compat => {
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th => [ ['usage', { free => 'usage-free', prct => 'usage-prct'} ], [ 'memory-usage-bytes', { free => 'memory-free-bytes', prct => 'memory-usage-percentage' } ] ],
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units => $options{option_results}->{units}, free => $options{option_results}->{free}
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}
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);
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$self->compat_threshold_counter(%options,
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compat => {
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th => [ ['swap', { free => 'swap-free', prct => 'swap-prct' } ], [ 'swap-usage-bytes', { free => 'swap-free-bytes', prct => 'swap-usage-percentage' } ] ],
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units => $options{option_results}->{units}, free => $options{option_results}->{free}
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}
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);
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$self->SUPER::check_options(%options);
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}
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my $mapping = {
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memTotalSwap => { oid => '.1.3.6.1.4.1.2021.4.3' },
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memAvailSwap => { oid => '.1.3.6.1.4.1.2021.4.4' },
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memTotalReal => { oid => '.1.3.6.1.4.1.2021.4.5' },
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memAvailReal => { oid => '.1.3.6.1.4.1.2021.4.6' },
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memTotalFree => { oid => '.1.3.6.1.4.1.2021.4.11' },
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memShared => { oid => '.1.3.6.1.4.1.2021.4.13' },
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memBuffer => { oid => '.1.3.6.1.4.1.2021.4.14' },
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memCached => { oid => '.1.3.6.1.4.1.2021.4.15' }
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};
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sub memory_calc {
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my ($self, %options) = @_;
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my $available = ($options{result}->{memAvailReal}) ? $options{result}->{memAvailReal} * 1024 : 0;
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my $total = ($options{result}->{memTotalReal}) ? $options{result}->{memTotalReal} * 1024 : 0;
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my $buffer = ($options{result}->{memBuffer}) ? $options{result}->{memBuffer} * 1024 : 0;
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my $cached = ($options{result}->{memCached}) ? $options{result}->{memCached} * 1024 : 0;
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my ($used, $free, $prct_used, $prct_free) = (0, 0, 0, 0);
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# rhel patch introduced: net-snmp-5.7.2-43.el7 (https://bugzilla.redhat.com/show_bug.cgi?id=1250060)
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# rhel patch reverted: net-snmp-5.7.2-47.el7 (https://bugzilla.redhat.com/show_bug.cgi?id=1779609)
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if ($total != 0) {
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$used = (defined($self->{option_results}->{patch_redhat})) ? $total - $available : $total - $available - $buffer - $cached;
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$free = (defined($self->{option_results}->{patch_redhat})) ? $available : $total - $used;
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$prct_used = $used * 100 / $total;
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$prct_free = 100 - $prct_used;
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}
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$self->{ram} = {
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total => $total,
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used => $used,
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free => $free,
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prct_used => $prct_used,
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prct_free => $prct_free,
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memShared => ($options{result}->{memShared}) ? $options{result}->{memShared} * 1024 : 0,
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memBuffer => $buffer,
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memCached => $cached
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};
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}
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sub swap_calc {
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my ($self, %options) = @_;
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my $free = ($options{result}->{memAvailSwap}) ? $options{result}->{memAvailSwap} * 1024 : 0;
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my $total = ($options{result}->{memTotalSwap}) ? $options{result}->{memTotalSwap} * 1024 : 0;
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my ($used, $prct_used, $prct_free) = (0, 0, 0, 0);
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if ($total != 0) {
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$used = $total - $free;
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$prct_used = $used * 100 / $total;
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$prct_free = 100 - $prct_used;
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}
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$self->{swap} = {
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total => $total,
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used => $used,
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free => $free,
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prct_used => $prct_used,
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prct_free => $prct_free
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};
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}
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sub manage_selection {
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my ($self, %options) = @_;
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my $results = $options{snmp}->get_leef(
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oids => [ map($_->{oid} . '.0', values(%$mapping)) ],
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nothing_quit => 1
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);
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my $result = $options{snmp}->map_instance(mapping => $mapping, results => $results, instance => 0);
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$self->memory_calc(result => $result);
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if (defined($self->{option_results}->{check_swap})) {
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$self->swap_calc(result => $result);
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}
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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 memory usage (UCD-SNMP-MIB).
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=over 8
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=item B<--units>
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Units of thresholds (Default: '%') ('%', 'absolute') (Deprecated. Please use new counters directly)
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=item B<--free>
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Thresholds are on free space left (Deprecated. Please use new counters directly)
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=item B<--swap>
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Check swap also.
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=item B<--warning-*> B<--critical-*>
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Thresholds.
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Can be: 'usage' (B), 'usage-free' (B), 'usage-prct' (%),
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'swap' (B), 'swap-free' (B), 'swap-prct' (%),
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'buffer' (B), 'cached' (B), 'shared' (B).
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=item B<--patch-redhat>
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If using RedHat distribution with net-snmp >= 5.7.2-43 and net-snmp < 5.7.2-47. But you should update net-snmp!!!!
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This version: used = memTotalReal - memAvailReal // free = memAvailReal
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Others versions: used = memTotalReal - memAvailReal - memBuffer - memCached // free = total - used
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=back
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=cut
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