190 lines
8.3 KiB
Perl
190 lines
8.3 KiB
Perl
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################################################################################
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# Copyright 2005-2013 MERETHIS
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# Centreon is developped by : Julien Mathis and Romain Le Merlus under
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# GPL Licence 2.0.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation ; either version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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# PARTICULAR PURPOSE. See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, see <http://www.gnu.org/licenses>.
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#
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# Linking this program statically or dynamically with other modules is making a
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# combined work based on this program. Thus, the terms and conditions of the GNU
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# General Public License cover the whole combination.
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#
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# As a special exception, the copyright holders of this program give MERETHIS
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# permission to link this program with independent modules to produce an executable,
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# regardless of the license terms of these independent modules, and to copy and
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# distribute the resulting executable under terms of MERETHIS choice, provided that
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# MERETHIS also meet, for each linked independent module, the terms and conditions
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# of the license of that module. An independent module is a module which is not
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# derived from this program. If you modify this program, you may extend this
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# exception to your version of the program, but you are not obliged to do so. If you
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# do not wish to do so, delete this exception statement from your version.
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#
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# For more information : contact@centreon.com
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# Authors : Quentin Garnier <qgarnier@merethis.com>
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#
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####################################################################################
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package database::postgres::mode::hitratio;
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use base qw(centreon::plugins::mode);
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use strict;
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use warnings;
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use centreon::plugins::statefile;
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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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$options{options}->add_options(arguments =>
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{
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"warning:s" => { name => 'warning', },
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"critical:s" => { name => 'critical', },
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"lookback" => { name => 'lookback', },
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"exclude:s" => { name => 'exclude', },
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});
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$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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$self->SUPER::init(%options);
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if (($self->{perfdata}->threshold_validate(label => 'warning', value => $self->{option_results}->{warning})) == 0) {
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$self->{output}->add_option_msg(short_msg => "Wrong warning threshold '" . $self->{warn1} . "'.");
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$self->{output}->option_exit();
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}
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if (($self->{perfdata}->threshold_validate(label => 'critical', value => $self->{option_results}->{critical})) == 0) {
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$self->{output}->add_option_msg(short_msg => "Wrong critical threshold '" . $self->{critical} . "'.");
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$self->{output}->option_exit();
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}
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$self->{statefile_cache}->check_options(%options);
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}
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sub run {
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my ($self, %options) = @_;
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# $options{sql} = sqlmode object
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$self->{sql} = $options{sql};
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$self->{sql}->connect();
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$self->{sql}->query(query => q{
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SELECT sd.blks_hit, sd.blks_read, d.datname
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FROM pg_stat_database sd, pg_database d
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WHERE d.oid=sd.datid
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});
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$self->{statefile_cache}->read(statefile => 'postgres_' . $self->{mode} . '_' . $self->{sql}->get_unique_id4save());
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my $old_timestamp = $self->{statefile_cache}->get(name => 'last_timestamp');
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my $database_check = 0;
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my $new_datas = {};
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$new_datas->{last_timestamp} = time();
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my $result = $self->{sql}->fetchall_arrayref();
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$self->{output}->output_add(severity => 'OK',
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short_msg => "All databases hitratio are ok.");
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foreach my $row (@{$result}) {
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$new_datas->{$$row[2] . '_blks_hit'} = $$row[0];
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$new_datas->{$$row[2] . '_blks_read'} = $$row[1];
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if (defined($self->{option_results}->{exclude}) && $$row[2] !~ /$self->{option_results}->{exclude}/) {
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$self->{output}->output_add(long_msg => "Skipping database '" . $$row[2] . '"');
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next;
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}
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my $old_blks_hit = $self->{statefile_cache}->get(name => $$row[2] . '_blks_hit');
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my $old_blks_read = $self->{statefile_cache}->get(name => $$row[2] . '_blks_read');
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next if (!defined($old_blks_hit) || !defined($old_blks_read));
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$old_blks_hit = 0 if ($$row[0] <= $old_blks_hit);
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$old_blks_read = 0 if ($$row[1] <= $old_blks_read);
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$database_check++;
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my %prcts = ();
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my $total_read_requests = $new_datas->{$$row[2] . '_blks_hit'} - $old_blks_hit;
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my $total_read_disk = $new_datas->{$$row[2] . '_blks_read'} - $old_blks_read;
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$prcts{hitratio_now} = ($total_read_requests == 0) ? 100 : ($total_read_requests - $total_read_disk) * 100 / $total_read_requests;
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$prcts{hitratio} = ($new_datas->{$$row[2] . '_blks_hit'} == 0) ? 100 : ($new_datas->{$$row[2] . '_blks_hit'} - $new_datas->{$$row[2] . '_blks_read'}) * 100 / $new_datas->{$$row[2] . '_blks_hit'};
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my $exit_code = $self->{perfdata}->threshold_check(value => $prcts{'hitratio' . ((defined($self->{option_results}->{lookback})) ? '_now' : '' )}, threshold => [ { label => 'critical', 'exit_litteral' => 'critical' }, { label => 'warning', exit_litteral => 'warning' } ]);
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$self->{output}->output_add(long_msg => sprintf("Database '%s' hitratio at %.2f%%",
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$$row[2], $prcts{'hitratio' . ((defined($self->{option_results}->{lookback})) ? '' : '_now')})
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);
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if (!$self->{output}->is_status(value => $exit_code, compare => 'ok', litteral => 1)) {
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$self->{output}->output_add(severity => $exit_code,
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short_msg => sprintf("Database '%s' hitratio at %.2f%%",
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$$row[2], $prcts{'hitratio' . ((defined($self->{option_results}->{lookback})) ? '' : '_now')})
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);
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}
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$self->{output}->perfdata_add(label => $$row[2] . '_hitratio' . ((defined($self->{option_results}->{lookback})) ? '' : '_now'), unit => '%',
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value => sprintf("%.2f", $prcts{'hitratio' . ((defined($self->{option_results}->{lookback})) ? '_now' : '')}),
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warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning'),
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critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical'),
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min => 0, max => 100);
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$self->{output}->perfdata_add(label => $$row[2] . '_hitratio' . ((defined($self->{option_results}->{lookback})) ? '_now' : ''), unit => '%',
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value => sprintf("%.2f", $prcts{'hitratio' . ((defined($self->{option_results}->{lookback})) ? '_now' : '')}),
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min => 0, max => 100);
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}
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$self->{statefile_cache}->write(data => $new_datas);
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if (!defined($old_timestamp)) {
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$self->{output}->output_add(severity => 'OK',
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short_msg => "Buffer creation...");
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}
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if (defined($old_timestamp) && $database_check == 0) {
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$self->{output}->output_add(severity => 'UNKNOWN',
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short_msg => 'No database checked. (permission or a wrong exclude filter)');
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}
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$self->{output}->display();
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$self->{output}->exit();
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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 hitratio (in buffer cache) for databases.
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=over 8
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=item B<--warning>
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Threshold warning.
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=item B<--critical>
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Threshold critical.
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=item B<--lookback>
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Threshold isn't on the percent calculated from the difference ('xxx_hitratio_now').
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=item B<--exclude>
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Filter databases.
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=back
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=cut
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