418 lines
16 KiB
Perl
418 lines
16 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::diskusage;
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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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use centreon::plugins::statefile;
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use Digest::MD5 qw(md5_hex);
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sub custom_usage_output {
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my ($self, %options) = @_;
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my ($total_size_value, $total_size_unit) = $self->{perfdata}->change_bytes(value => $self->{result_values}->{total});
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my ($total_used_value, $total_used_unit) = $self->{perfdata}->change_bytes(value => $self->{result_values}->{used});
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my ($total_free_value, $total_free_unit) = $self->{perfdata}->change_bytes(value => $self->{result_values}->{free});
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return sprintf(
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'usage total: %s used: %s (%.2f%%) free: %s (%.2f%%)',
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$total_size_value . " " . $total_size_unit,
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$total_used_value . " " . $total_used_unit, $self->{result_values}->{prct_used},
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$total_free_value . " " . $total_free_unit, $self->{result_values}->{prct_free}
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);
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}
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sub set_counters {
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my ($self, %options) = @_;
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$self->{maps_counters_type} = [
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{ name => 'global', type => 0 },
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{ name => 'diskpath', type => 1, cb_prefix_output => 'prefix_diskpath_output', message_multiple => 'All partitions are ok', skipped_code => { -10 => 1 } },
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];
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$self->{maps_counters}->{global} = [
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{ label => 'count', nlabel => 'storage.partitions.count', display_ok => 0, set => {
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key_values => [ { name => 'count' } ],
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output_template => 'Partitions count : %d',
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perfdatas => [
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{ label => 'count', template => '%d', min => 0 }
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]
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}
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}
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];
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$self->{maps_counters}->{diskpath} = [
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{ label => 'usage', nlabel => 'storage.space.usage.bytes', set => {
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key_values => [ { name => 'used' }, { name => 'free' }, { name => 'prct_used' }, { name => 'prct_free' }, { name => 'total' }, { name => 'display' } ],
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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',
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unit => 'B', cast_int => 1, label_extra_instance => 1, instance_use => 'display' }
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]
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}
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},
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{ label => 'usage-free', display_ok => 0, nlabel => 'storage.space.free.bytes', set => {
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key_values => [ { name => 'free' }, { name => 'used' }, { name => 'prct_used' }, { name => 'prct_free' }, { name => 'total' }, { name => 'display' } ],
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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',
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unit => 'B', cast_int => 1, label_extra_instance => 1, instance_use => 'display' }
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]
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}
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},
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{ label => 'usage-prct', display_ok => 0, nlabel => 'storage.space.usage.percentage', set => {
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key_values => [ { name => 'prct_used' }, { name => 'display' } ],
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output_template => 'used: %.2f %%',
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perfdatas => [
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{ label => 'used_prct', template => '%.2f', min => 0, max => 100,
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unit => '%', label_extra_instance => 1, instance_use => 'display' }
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]
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}
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},
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{ label => 'inodes', nlabel => 'storage.inodes.usage.percentage', set => {
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key_values => [ { name => 'inodes' }, { name => 'display' } ],
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output_template => 'Inodes used: %s %%',
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perfdatas => [
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{ label => 'inodes', template => '%d',
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unit => '%', min => 0, max => 100, label_extra_instance => 1, instance_use => 'display' }
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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 prefix_diskpath_output {
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my ($self, %options) = @_;
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return "Partition '" . $options{instance_value}->{display} . "' ";
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}
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sub new {
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my ($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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'disk-index:s' => { name => 'disk_index' },
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'filter-disk-path:s' => { name => 'filter_disk_path' },
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'filter-disk-device:s' => { name => 'filter_disk_device' },
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'units:s' => { name => 'units', default => '' },
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'free' => { name => 'free' },
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'reload-cache-time:s' => { name => 'reload_cache_time', default => 180 },
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'name' => { name => 'use_name' }, # legacy
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'diskpath:s' => { name => 'diskpath' }, # legacy
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'regexp' => { name => 'use_regexp' }, # legacy
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'regexp-isensitive' => { name => 'use_regexpi' }, # legacy
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'display-transform-src:s' => { name => 'display_transform_src' },
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'display-transform-dst:s' => { name => 'display_transform_dst' },
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'show-cache' => { name => 'show_cache' },
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'space-reservation:s' => { name => 'space_reservation' },
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'force-use-mib-percent' => { name => 'force_use_mib_percent' },
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'force-counters32' => { name => 'force_counters32' }
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});
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$self->{statefile_cache} = centreon::plugins::statefile->new(%options);
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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'} ], [ 'storage.space.usage.bytes', { free => 'storage.space.free.bytes', prct => 'storage.space.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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if (defined($self->{option_results}->{space_reservation}) &&
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($self->{option_results}->{space_reservation} < 0 || $self->{option_results}->{space_reservation} > 100)) {
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$self->{output}->add_option_msg(short_msg => "Space reservation argument must be between 0 and 100 percent.");
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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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}
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my $mapping = {
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dskTotal32 => { oid => '.1.3.6.1.4.1.2021.9.1.6' }, # kB
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dskUsed32 => { oid => '.1.3.6.1.4.1.2021.9.1.8' }, # kB
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dskPercent => { oid => '.1.3.6.1.4.1.2021.9.1.9' },
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dskPercentNode => { oid => '.1.3.6.1.4.1.2021.9.1.10' },
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dskTotalLow => { oid => '.1.3.6.1.4.1.2021.9.1.11' }, # kB
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dskTotalHigh => { oid => '.1.3.6.1.4.1.2021.9.1.12' }, # kB
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dskUsedLow => { oid => '.1.3.6.1.4.1.2021.9.1.15' }, # kB
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dskUsedHigh => { oid => '.1.3.6.1.4.1.2021.9.1.16' } # kB
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};
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sub manage_selection {
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my ($self, %options) = @_;
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my $disks = $self->get_selection(snmp => $options{snmp});
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delete($mapping->{dskPercent}) if (!defined($self->{option_results}->{force_use_mib_percent}));
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if (!defined($self->{option_results}->{force_counters32})) {
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delete($mapping->{dskTotal32});
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delete($mapping->{dskUsed32});
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} else {
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delete($mapping->{dskTotalLow});
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delete($mapping->{dskTotalHigh});
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delete($mapping->{dskUsedLow});
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delete($mapping->{dskUsedHigh});
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}
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$options{snmp}->load(
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oids => [ map($_->{oid}, values(%$mapping)) ],
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instances => [keys %$disks],
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nothing_quit => 1
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);
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my $snmp_result = $options{snmp}->get_leef();
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$self->{global}->{count} = 0;
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$self->{diskpath} = {};
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foreach (keys %$disks) {
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my $name_diskpath = $self->get_display_value(value => $disks->{$_}->[0]);
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my $result = $options{snmp}->map_instance(mapping => $mapping, results => $snmp_result, instance => $_);
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if (!defined($result->{dskTotal32}) && !defined($result->{dskTotalHigh})) {
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$self->{output}->add_option_msg(
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long_msg => sprintf(
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"skipping partition '%s': not found (need to reload the cache)",
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$name_diskpath
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)
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);
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next;
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}
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my $total_size = defined($result->{dskTotalHigh}) ? ((($result->{dskTotalHigh} << 32) + $result->{dskTotalLow}) * 1024) : $result->{dskTotal32} * 1024;
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if ($total_size == 0) {
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$self->{output}->output_add(long_msg => sprintf("skipping partition '%s' (total size is 0)", $name_diskpath), debug => 1);
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next;
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}
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my $total_used = defined($result->{dskUsedHigh}) ? ((($result->{dskUsedHigh} << 32) + $result->{dskUsedLow}) * 1024) : $result->{dskUsed32} * 1024;
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my $reserved_value = 0;
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if (defined($self->{option_results}->{space_reservation})) {
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$reserved_value = $self->{option_results}->{space_reservation} * $total_size / 100;
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}
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my $prct_used = $total_used * 100 / ($total_size - $reserved_value);
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my $prct_free = 100 - $prct_used;
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my $free = $total_size - $total_used - $reserved_value;
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# limit to 100. Better output.
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if ($prct_used > 100) {
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$free = 0;
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$prct_used = 100;
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$prct_free = 0;
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}
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$prct_used = $result->{dskPercent} if (defined($self->{option_results}->{force_use_mib_percent}));
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$self->{diskpath}->{$name_diskpath} = {
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display => $name_diskpath,
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total => $total_size,
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used => $total_used,
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free => $free,
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prct_free => $prct_free,
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prct_used => $prct_used,
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inodes => $result->{dskPercentNode}
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};
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$self->{global}->{count}++;
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}
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if (scalar(keys %{$self->{diskpath}}) <= 0) {
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$self->{output}->add_option_msg(short_msg => 'Issue with disk path information (see details)');
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$self->{output}->option_exit();
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}
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}
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sub reload_cache {
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my ($self, %options) = @_;
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my $datas = {};
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$datas->{last_timestamp} = time();
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$datas->{disks} = {};
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my $oid_dskEntry = '.1.3.6.1.4.1.2021.9.1';
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my $oid_dskPath = '.1.3.6.1.4.1.2021.9.1.2';
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my $oid_dskDevice = '.1.3.6.1.4.1.2021.9.1.3';
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my $result = $options{snmp}->get_table(
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oid => $oid_dskEntry,
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start => $oid_dskPath,
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end => $oid_dskDevice
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);
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foreach my $key (keys %$result) {
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next if ($key !~ /$oid_dskPath\.([0-9]+)$/);
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$datas->{disks}->{$1} = [
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$self->{output}->decode($result->{$key}),
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$self->{output}->decode($result->{$oid_dskDevice . '.' . $1})
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];
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}
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if (scalar(keys %{$datas->{disks}}) <= 0) {
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$self->{output}->add_option_msg(short_msg => "Can't construct cache...");
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$self->{output}->option_exit();
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}
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$self->{statefile_cache}->write(data => $datas);
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return $datas->{disks};
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}
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sub get_selection {
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my ($self, %options) = @_;
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# init cache file
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my $has_cache_file = $self->{statefile_cache}->read(statefile => 'cache_snmpstandard_' . $options{snmp}->get_hostname() . '_' . $options{snmp}->get_port() . '_' . $self->{mode});
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if (defined($self->{option_results}->{show_cache})) {
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$self->{output}->add_option_msg(long_msg => $self->{statefile_cache}->get_string_content());
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$self->{output}->option_exit();
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}
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my $timestamp_cache = $self->{statefile_cache}->get(name => 'last_timestamp');
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my $disks = $self->{statefile_cache}->get(name => 'disks');
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if ($has_cache_file == 0 || !defined($timestamp_cache) || !defined($disks) || ((time() - $timestamp_cache) > (($self->{option_results}->{reload_cache_time}) * 60))) {
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$disks = $self->reload_cache(snmp => $options{snmp});
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$self->{statefile_cache}->read();
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}
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my $select_index = !defined($self->{option_results}->{use_name}) && defined($self->{option_results}->{diskpath}) && defined($self->{option_results}->{diskpath}) ne '' ?
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$self->{option_results}->{diskpath} : undef;
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$select_index = $self->{option_results}->{disk_index}
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if (defined($self->{option_results}->{disk_index}) && defined($self->{option_results}->{disk_index}) ne '');
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my $filter_path = defined($self->{option_results}->{use_name}) && defined($self->{option_results}->{diskpath}) && $self->{option_results}->{diskpath} ne '' ?
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$self->{option_results}->{diskpath} : undef;
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$filter_path = '^' . $filter_path . '$'
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if (defined($filter_path) && !defined($self->{option_results}->{use_regexp}));
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$filter_path = '(?i)' . $filter_path
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if (defined($filter_path) && defined($self->{option_results}->{use_regexp}) && defined($self->{option_results}->{use_regexpi}));
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$filter_path = $self->{option_results}->{filter_disk_path}
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if (defined($self->{option_results}->{filter_disk_path}) && defined($self->{option_results}->{filter_disk_path}) ne '');
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my $results = {};
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foreach (keys %$disks) {
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if (defined($select_index) && $select_index ne $_) {
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$self->{output}->output_add(long_msg => "skipping '" . $disks->{$_}->[0] . "': no matching filter.", debug => 1);
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next;
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}
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if (defined($filter_path) && $disks->{$_}->[0] !~ /$filter_path/) {
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$self->{output}->output_add(long_msg => "skipping '" . $disks->{$_}->[0] . "': no matching filter.", debug => 1);
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next;
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}
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if (defined($self->{option_results}->{filter_disk_device}) && $self->{option_results}->{filter_disk_device} ne '' &&
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$disks->{$_}->[1] !~ /$self->{option_results}->{filter_disk_device}/) {
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$self->{output}->output_add(long_msg => "skipping '" . $disks->{$_}->[1] . "': no matching filter.", debug => 1);
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next;
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}
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$results->{$_} = $disks->{$_};
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}
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if (scalar(keys %$results) <= 0) {
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$self->{output}->add_option_msg(short_msg => "No disk path found. Can be: filters, cache file.");
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$self->{output}->option_exit();
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}
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return $results;
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}
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sub get_display_value {
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my ($self, %options) = @_;
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my $value = $options{value};
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if (defined($self->{option_results}->{display_transform_src})) {
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$self->{option_results}->{display_transform_dst} = '' if (!defined($self->{option_results}->{display_transform_dst}));
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eval "\$value =~ s{$self->{option_results}->{display_transform_src}}{$self->{option_results}->{display_transform_dst}}";
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}
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return $value;
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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 usage on partitions (UCD-SNMP-MIB).
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Need to enable "includeAllDisks 10%" on snmpd.conf.
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=over 8
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=item B<--filter-counters>
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Filter counters to be displayed (Can be: 'usage', 'count', 'inodes').
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=item B<--disk-index>
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Choose disk according to the index.
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=item B<--filter-disk-path>
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Filter disks according to their path.
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=item B<--filter-disk-device>
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Filter disks according to their device name.
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=item B<--reload-cache-time>
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Time in minutes before reloading cache file (default: 180).
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=item B<--display-transform-src>
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Regexp src to transform display value. (security risk!!!)
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=item B<--display-transform-dst>
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Regexp dst to transform display value. (security risk!!!)
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=item B<--show-cache>
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Display cache disk path datas.
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=item B<--space-reservation>
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Some filesystem has space reserved (like ext4 for root).
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The value is in percent of total (Default: none) (results like 'df' command).
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=item B<--force-use-mib-percent>
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Can be used if you have counters overload by big disks.
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=item B<--force-counters32>
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Force to use 32 bits counters. Should be used when 64 bits high/low components are not available.
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=item B<--warning-*> B<--critical-*>
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Thresholds (Can be: 'usage', 'usage-free', 'usage-prct', 'inodes', 'count').
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=back
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=cut
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