410 lines
16 KiB
Perl
410 lines
16 KiB
Perl
#
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# Copyright 2019 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_perfdata {
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my ($self, %options) = @_;
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my $label = 'used';
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my $value_perf = $self->{result_values}->{used};
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if (defined($self->{instance_mode}->{option_results}->{free})) {
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$label = 'free';
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$value_perf = $self->{result_values}->{free};
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}
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my %total_options = ();
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if ($self->{instance_mode}->{option_results}->{units} eq '%') {
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$total_options{total} = $self->{result_values}->{total};
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$total_options{cast_int} = 1;
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}
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$self->{output}->perfdata_add(
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label => $label, unit => 'B',
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instances => $self->use_instances(extra_instance => $options{extra_instance}) ? $self->{result_values}->{display} : undef,
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value => $value_perf,
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warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning-' . $self->{thlabel}, %total_options),
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critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical-' . $self->{thlabel}, %total_options),
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min => 0, max => $self->{result_values}->{total}
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);
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}
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sub custom_usage_threshold {
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my ($self, %options) = @_;
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my ($exit, $threshold_value);
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$threshold_value = $self->{result_values}->{used};
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$threshold_value = $self->{result_values}->{free} if (defined($self->{instance_mode}->{option_results}->{free}));
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if ($self->{instance_mode}->{option_results}->{units} eq '%') {
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$threshold_value = $self->{result_values}->{prct_used};
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$threshold_value = $self->{result_values}->{prct_free} if (defined($self->{instance_mode}->{option_results}->{free}));
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}
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$exit = $self->{perfdata}->threshold_check(value => $threshold_value, threshold => [ { label => 'critical-' . $self->{thlabel}, exit_litteral => 'critical' }, { label => 'warning-'. $self->{thlabel}, exit_litteral => 'warning' } ]);
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return $exit;
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}
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sub custom_usage_output {
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my ($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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my $msg = sprintf("Usage Total: %s Used: %s (%.2f%%) Free: %s (%.2f%%)",
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$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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return $msg;
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}
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sub custom_usage_calc {
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my ($self, %options) = @_;
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$self->{result_values}->{display} = $options{new_datas}->{$self->{instance} . '_display'};
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$self->{result_values}->{total} = $options{new_datas}->{$self->{instance} . '_size'};
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my $reserved_value = 0;
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if (defined($self->{instance_mode}->{option_results}->{space_reservation})) {
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$reserved_value = $self->{instance_mode}->{option_results}->{space_reservation} * $self->{result_values}->{total} / 100;
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}
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$self->{result_values}->{used} = $options{new_datas}->{$self->{instance} . '_used'};
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$self->{result_values}->{free} = $self->{result_values}->{total} - $self->{result_values}->{used} - $reserved_value;
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$self->{result_values}->{prct_used} = $self->{result_values}->{used} * 100 / ($self->{result_values}->{total} - $reserved_value);
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$self->{result_values}->{prct_free} = 100 - $self->{result_values}->{prct_used};
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# limit to 100. Better output.
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if ($self->{result_values}->{prct_used} > 100) {
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$self->{result_values}->{free} = 0;
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$self->{result_values}->{prct_used} = 100;
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$self->{result_values}->{prct_free} = 0;
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}
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return 0;
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}
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sub set_counters {
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my ($self, %options) = @_;
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$self->{maps_counters_type} = [
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{ name => 'global', type => 0, cb_init => 'skip_global' },
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{ name => 'diskpath', type => 1, cb_prefix_output => 'prefix_diskpath_output', message_multiple => 'All partitions are ok', skipped_code => { -10 => 1 } },
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];
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$self->{maps_counters}->{global} = [
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{ label => 'count', 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', value => 'count_absolute', 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', set => {
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key_values => [ { name => 'display' }, { name => 'used' }, { name => 'size' } ],
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closure_custom_calc => $self->can('custom_usage_calc'),
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closure_custom_output => $self->can('custom_usage_output'),
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closure_custom_perfdata => $self->can('custom_usage_perfdata'),
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closure_custom_threshold_check => $self->can('custom_usage_threshold'),
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}
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},
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{ label => 'inodes', set => {
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key_values => [ { name => 'inodes' }, { name => 'display' } ],
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output_template => 'Inodes Used: %s %%',
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perfdatas => [
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{ label => 'inodes', value => 'inodes_absolute', template => '%d',
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unit => '%', min => 0, max => 100, label_extra_instance => 1, instance_use => 'display_absolute' },
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],
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}
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},
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];
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}
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sub skip_global {
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my ($self, %options) = @_;
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scalar(keys %{$self->{diskpath}}) > 1 ? return(0) : return(1);
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}
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sub prefix_diskpath_output {
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my ($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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"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' },
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"diskpath:s" => { name => 'diskpath' },
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"regexp" => { name => 'use_regexp' },
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"regexp-isensitive" => { name => 'use_regexpi' },
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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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});
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$self->{diskpath_id_selected} = [];
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$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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$self->SUPER::check_options(%options);
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# compatibility
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if (!defined($self->{option_results}->{filter_counters})) {
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$self->{option_results}->{filter_counters} = 'usage';
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}
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if (defined($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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sub manage_selection {
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my ($self, %options) = @_;
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$self->{snmp} = $options{snmp};
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$self->get_selection();
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my $oid_dskTotalLow = '.1.3.6.1.4.1.2021.9.1.11'; # in kB
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my $oid_dskTotalHigh = '.1.3.6.1.4.1.2021.9.1.12'; # in kB
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my $oid_dskUsedLow = '.1.3.6.1.4.1.2021.9.1.15'; # in kB
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my $oid_dskUsedHigh = '.1.3.6.1.4.1.2021.9.1.16'; # in kB
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my $oid_dskPercentNode = '.1.3.6.1.4.1.2021.9.1.10';
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$self->{snmp}->load(
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oids => [
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$oid_dskTotalLow, $oid_dskTotalHigh, $oid_dskUsedLow, $oid_dskUsedHigh, $oid_dskPercentNode
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],
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instances => $self->{diskpath_id_selected},
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nothing_quit => 1
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);
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my $result = $self->{snmp}->get_leef();
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$self->{global}->{count} = 0;
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$self->{diskpath} = {};
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foreach (sort @{$self->{diskpath_id_selected}}) {
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my $name_diskpath = $self->get_display_value(id => $_);
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if (!defined($result->{$oid_dskTotalHigh . "." . $_})) {
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$self->{output}->add_option_msg(long_msg => sprintf("skipping partition '%s': not found (need to reload the cache)",
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$name_diskpath));
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next;
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}
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my $total_size = (($result->{$oid_dskTotalHigh . "." . $_} << 32) + $result->{$oid_dskTotalLow . "." . $_}) * 1024;
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if ($total_size == 0) {
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$self->{output}->output_add(long_msg => sprintf("skipping partition '%s' (total size is 0)", $name_diskpath));
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next;
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}
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my $total_used = (($result->{$oid_dskUsedHigh . "." . $_} << 32) + $result->{$oid_dskUsedLow . "." . $_}) * 1024;
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$self->{diskpath}->{$_} = {
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display => $name_diskpath,
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size => $total_size,
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used => $total_used,
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inodes => defined($result->{$oid_dskPercentNode . "." . $_}) ? $result->{$oid_dskPercentNode . "." . $_} : undef,
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};
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$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) = @_;
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my $datas = {};
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$datas->{last_timestamp} = time();
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$datas->{all_ids} = [];
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my $oid_dskPath = '.1.3.6.1.4.1.2021.9.1.2';
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my $result = $self->{snmp}->get_table(oid => $oid_dskPath);
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foreach my $key ($self->{snmp}->oid_lex_sort(keys %{$result})) {
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next if ($key !~ /\.([0-9]+)$/);
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my $diskpath_index = $1;
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push @{$datas->{all_ids}}, $diskpath_index;
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$datas->{"dskPath_" . $diskpath_index} = $self->{output}->to_utf8($result->{$key});
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}
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if (scalar(@{$datas->{all_ids}}) <= 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 => $datas);
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}
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sub get_selection {
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my ($self, %options) = @_;
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# init cache file
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my $has_cache_file = $self->{statefile_cache}->read(statefile => 'cache_snmpstandard_' . $self->{snmp}->get_hostname() . '_' . $self->{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 = $self->{statefile_cache}->get(name => 'last_timestamp');
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if ($has_cache_file == 0 || !defined($timestamp_cache) || ((time() - $timestamp_cache) > (($self->{option_results}->{reload_cache_time}) * 60))) {
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$self->reload_cache();
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$self->{statefile_cache}->read();
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}
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my $all_ids = $self->{statefile_cache}->get(name => 'all_ids');
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if (!defined($self->{option_results}->{use_name}) && defined($self->{option_results}->{diskpath})) {
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# get by ID
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my $name = $self->{statefile_cache}->get(name => "dskPath_" . $self->{option_results}->{diskpath});
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push @{$self->{diskpath_id_selected}}, $self->{option_results}->{diskpath} if (defined($name));
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} else {
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foreach my $i (@{$all_ids}) {
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my $filter_name = $self->{statefile_cache}->get(name => "dskPath_" . $i);
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next if (!defined($filter_name));
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if (!defined($self->{option_results}->{diskpath})) {
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push @{$self->{diskpath_id_selected}}, $i;
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next;
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}
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if (defined($self->{option_results}->{use_regexp}) && defined($self->{option_results}->{use_regexpi}) && $filter_name =~ /$self->{option_results}->{diskpath}/i) {
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push @{$self->{diskpath_id_selected}}, $i;
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}
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if (defined($self->{option_results}->{use_regexp}) && !defined($self->{option_results}->{use_regexpi}) && $filter_name =~ /$self->{option_results}->{diskpath}/) {
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push @{$self->{diskpath_id_selected}}, $i;
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}
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if (!defined($self->{option_results}->{use_regexp}) && !defined($self->{option_results}->{use_regexpi}) && $filter_name eq $self->{option_results}->{diskpath}) {
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push @{$self->{diskpath_id_selected}}, $i;
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}
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}
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}
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if (scalar(@{$self->{diskpath_id_selected}}) <= 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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}
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sub get_display_value {
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my ($self, %options) = @_;
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my $value = $self->{statefile_cache}->get(name => "dskPath_" . $options{id});
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if (defined($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 (Default: 'usage', Can be: 'usage', 'count', 'inodes').
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=item B<--warning-*>
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Threshold warning (Can be: 'usage', 'inodes', 'count').
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=item B<--critical-*>
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Threshold warning (Can be: 'usage', 'inodes', 'count').
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=item B<--units>
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Units of thresholds (Default: '%') ('%', 'B').
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=item B<--free>
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Thresholds are on free space left.
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=item B<--diskpath>
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Set the disk path (number expected) ex: 1, 2,... (empty means 'check all disk path').
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=item B<--name>
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Allows to use disk path name with option --diskpath instead of disk path oid index.
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=item B<--regexp>
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Allows to use regexp to filter disk path (with option --name).
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=item B<--regexp-isensitive>
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Allows to use regexp non case-sensitive (with --regexp).
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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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=back
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=cut
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