255 lines
10 KiB
Perl
255 lines
10 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 cloud::prometheus::exporters::nodeexporter::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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my $instance_mode;
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sub custom_usage_perfdata {
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my ($self, %options) = @_;
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my $label = 'used';
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my $value_perf = $self->{result_values}->{used};
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my $extra_label = '';
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$extra_label = '_' . $self->{result_values}->{display} if (!defined($options{extra_instance}) || $options{extra_instance} != 0);
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my %total_options = ();
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if ($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(label => $label . $extra_label, unit => 'B',
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value => $value_perf,
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warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning-' . $self->{label}, %total_options),
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critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical-' . $self->{label}, %total_options),
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min => 0, max => $self->{result_values}->{total});
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}
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sub custom_usage_threshold {
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my ($self, %options) = @_;
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my ($exit, $threshold_value);
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$threshold_value = $self->{result_values}->{used};
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if ($instance_mode->{option_results}->{units} eq '%') {
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$threshold_value = $self->{result_values}->{prct_used};
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}
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$exit = $self->{perfdata}->threshold_check(value => $threshold_value, threshold => [ { label => 'critical-' . $self->{label}, exit_litteral => 'critical' },
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{ label => 'warning-'. $self->{label}, 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 $msg = sprintf("Ram Total: %s, Used (-buffers/cache): %s (%.2f%%)",
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$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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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} . '_total'};
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$self->{result_values}->{available} = $options{new_datas}->{$self->{instance} . '_available'};
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$self->{result_values}->{buffer} = $options{new_datas}->{$self->{instance} . '_buffer'};
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$self->{result_values}->{cached} = $options{new_datas}->{$self->{instance} . '_cached'};
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$self->{result_values}->{used} = $self->{result_values}->{total} - $self->{result_values}->{available} - $self->{result_values}->{buffer} - $self->{result_values}->{cached};
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$self->{result_values}->{prct_used} = ($self->{result_values}->{total} > 0) ? $self->{result_values}->{used} * 100 / $self->{result_values}->{total} : 0;
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return 0;
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}
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sub set_counters {
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my ($self, %options) = @_;
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$self->{maps_counters_type} = [
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{ name => 'nodes', type => 1, cb_prefix_output => 'prefix_nodes_output', message_multiple => 'All nodes memory usage are ok' },
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];
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$self->{maps_counters}->{nodes} = [
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{ label => 'usage', set => {
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key_values => [ { name => 'total' }, { name => 'available' },
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{ name => 'buffer' }, { name => 'cached' }, { name => 'display' } ],
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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 => 'buffer', set => {
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key_values => [ { name => 'buffer' }, { name => 'display' } ],
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output_template => 'Buffer: %.2f %s',
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output_change_bytes => 1,
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perfdatas => [
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{ label => 'buffer', value => 'buffer_absolute', template => '%s',
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min => 0, unit => 'B', label_extra_instance => 1, instance_use => 'display_absolute' },
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],
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}
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},
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{ label => 'cached', set => {
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key_values => [ { name => 'cached' }, { name => 'display' } ],
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output_template => 'Cached: %.2f %s',
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output_change_bytes => 1,
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perfdatas => [
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{ label => 'cached', value => 'cached_absolute', template => '%s',
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min => 0, unit => 'B', 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 prefix_nodes_output {
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my ($self, %options) = @_;
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return "Node '" . $options{instance_value}->{display} . "' ";
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}
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sub new {
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my ($class, %options) = @_;
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my $self = $class->SUPER::new(package => __PACKAGE__, %options);
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bless $self, $class;
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$self->{version} = '1.0';
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$options{options}->add_options(arguments =>
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{
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"instance:s" => { name => 'instance', default => 'instance=~".*"' },
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"units:s" => { name => 'units', default => '%' },
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"extra-filter:s@" => { name => 'extra_filter' },
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"metric-overload:s@" => { name => 'metric_overload' },
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});
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return $self;
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}
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sub check_options {
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my ($self, %options) = @_;
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$self->SUPER::check_options(%options);
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$self->{metrics} = {
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'total' => "^node_memory_MemTotal.*",
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'available' => "^node_memory_MemAvailable.*",
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'cached' => "^node_memory_Cached.*",
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'buffer' => "^node_memory_Buffers.*",
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};
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foreach my $metric (@{$self->{option_results}->{metric_overload}}) {
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next if ($metric !~ /(.*),(.*)/);
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$self->{metrics}->{$1} = $2 if (defined($self->{metrics}->{$1}));
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}
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$self->{labels} = {};
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foreach my $label (('instance')) {
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if ($self->{option_results}->{$label} !~ /^(\w+)[!~=]+\".*\"$/) {
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$self->{output}->add_option_msg(short_msg => "Need to specify --" . $label . " option as a PromQL filter.");
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$self->{output}->option_exit();
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}
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$self->{labels}->{$label} = $1;
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}
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$self->{extra_filter} = '';
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foreach my $filter (@{$self->{option_results}->{extra_filter}}) {
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$self->{extra_filter} .= ',' . $filter;
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}
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$instance_mode = $self;
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}
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sub manage_selection {
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my ($self, %options) = @_;
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$self->{nodes} = {};
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my $results = $options{custom}->query(queries => [ 'label_replace({__name__=~"' . $self->{metrics}->{total} . '",' .
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$self->{option_results}->{instance} .
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$self->{extra_filter} . '}, "__name__", "total", "", "")',
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'label_replace({__name__=~"' . $self->{metrics}->{available} . '",' .
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$self->{option_results}->{instance} .
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$self->{extra_filter} . '}, "__name__", "available", "", "")',
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'label_replace({__name__=~"' . $self->{metrics}->{cached} . '",' .
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$self->{option_results}->{instance} .
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$self->{extra_filter} . '}, "__name__", "cached", "", "")',
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'label_replace({__name__=~"' . $self->{metrics}->{buffer} . '",' .
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$self->{option_results}->{instance} .
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$self->{extra_filter} . '}, "__name__", "buffer", "", "")' ]);
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foreach my $result (@{$results}) {
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$self->{nodes}->{$result->{metric}->{$self->{labels}->{instance}}}->{display} = $result->{metric}->{$self->{labels}->{instance}};
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$self->{nodes}->{$result->{metric}->{$self->{labels}->{instance}}}->{$result->{metric}->{__name__}} = ${$result->{value}}[1];
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}
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if (scalar(keys %{$self->{nodes}}) <= 0) {
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$self->{output}->add_option_msg(short_msg => "No nodes found.");
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$self->{output}->option_exit();
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}
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}
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1;
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__END__
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=head1 MODE
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Check memory usage.
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=over 8
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=item B<--instance>
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Filter on a specific instance (Must be a PromQL filter, Default: 'instance=~".*"')
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=item B<--warning-*>
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Threshold warning.
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Can be: 'usage', 'buffer', 'cached'.
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=item B<--critical-*>
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Threshold critical.
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Can be: 'usage', 'buffer', 'cached'.
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=item B<--units>
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Units of thresholds (Default: '%') ('%', 'B').
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=item B<--extra-filter>
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Add a PromQL filter (Can be multiple)
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Example : --extra-filter='name=~".*pretty.*"'
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=item B<--metric-overload>
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Overload default metrics name (Can be multiple, metric can be 'total', 'available', 'cached', 'buffer')
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Example : --metric-overload='metric,^my_metric_name$'
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=back
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=cut
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