+ Add mode for 'master-master' mysql replication
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Quentin Garnier
parent
d12c839747
commit
f2a4b18c09
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@ -0,0 +1,286 @@
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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::mysql::mode::replicationmastermaster;
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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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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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});
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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 '" . $self->{option_results}->{warning} . "'.");
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$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 '" . $self->{option_results}->{critical} . "'.");
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$self->{output}->option_exit();
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}
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}
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sub check_replication {
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my ($self, %options) = @_;
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my ($master, $slave) = ($options{master}, $options{slave});
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my ($slave_status, $slave_status_error) = (0, "");
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my ($position_status, $position_status_error) = (0, "");
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my ($total_srv, $last_error);
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my ($io_thread_status_srv, $sql_thread_status_srv);
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if ($self->{$slave->get_id()}->{exit} != -1) {
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$slave->query(query => q{
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SHOW SLAVE STATUS
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});
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my $result = $slave->fetchrow_hashref();
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my $slave_io_running = $result->{Slave_IO_Running};
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my $slave_sql_running = $result->{Slave_SQL_Running};
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$last_error = $result->{Last_Error};
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if (defined($slave_io_running) && $slave_io_running =~ /^yes$/i) {
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$io_thread_status_srv = 0;
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} else {
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$io_thread_status_srv = 1;
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}
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if (defined($slave_sql_running) && $slave_sql_running =~ /^yes$/i) {
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$sql_thread_status_srv = 0;
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} else {
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$sql_thread_status_srv = 1;
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}
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} else {
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$io_thread_status_srv = 100;
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$sql_thread_status_srv = 100;
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}
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$total_srv = $io_thread_status_srv + $sql_thread_status_srv;
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# Check if a thread is down
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if ($total_srv == 1) {
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$slave_status = -1;
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$slave_status_error = "A Replication thread is down on '" . $slave->get_id() . "'.";
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if ($sql_thread_status_srv != 0) {
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if (defined($last_error) && $last_error ne "") {
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$slave_status = 1;
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$slave_status_error .= " SQL Thread is stopped because of an error (error='" . $last_error . "').";
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}
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}
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}
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# Check if we need to SKIP
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if ($io_thread_status_srv == 100) {
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$slave_status = -1;
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$slave_status_error .= " Skip check on '" . $slave->get_id() . "'.";
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}
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if ($total_srv > 1) {
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$slave_status = 1;
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$slave_status_error .= " not a slave '" . $slave->get_id() . "' (maybe because we cannot check the server).";
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}
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####
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# Check Slave position
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####
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if ($self->{$master->get_id()}->{exit} == -1) {
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$position_status = -1;
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$position_status_error = "Can't get master position on '" . $master->get_id() . "'.";
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} else {
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# Get Master Position
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$master->query(query => q{
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SHOW MASTER STATUS
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});
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my $result = $master->fetchrow_hashref();
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my $master_file = $result->{File};
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my $master_position = $result->{Position};
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$slave->query(query => q{
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SHOW SLAVE STATUS
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});
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my $result2 = $slave->fetchrow_hashref();
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my $slave_file = $result2->{Master_Log_File}; # 'Master_Log_File'
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my $slave_position = $result2->{Read_Master_Log_Pos}; # 'Read_Master_Log_Pos'
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my $num_sec_lates = $result2->{Seconds_Behind_Master};
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my $exit_code_sec = $self->{perfdata}->threshold_check(value => $num_sec_lates, threshold => [ { label => 'critical', 'exit_litteral' => 'critical' }, { label => 'warning', exit_litteral => 'warning' } ]);
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if (!$self->{output}->is_status(value => $exit_code_sec, compare => 'ok', litteral => 1)) {
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$self->{output}->output_add(severity => $exit_code_sec,
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short_msg => sprintf("Slave '%s' has %d seconds latency behind master", $slave->get_id(), $num_sec_lates));
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}
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$self->{output}->perfdata_add(label => 'slave_latency_' . $slave->get_id(), unit => 's',
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value => $num_sec_lates,
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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);
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my $slave_sql_thread_ko = 1;
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my $slave_sql_thread_warning = 1;
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my $slave_sql_thread_ok = 1;
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$slave->query(query => q{
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SHOW FULL PROCESSLIST
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});
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while ((my $row = $slave->fetchrow_hashref())) {
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my $state = $row->{State};
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$slave_sql_thread_ko = 0 if (defined($state) && $state =~ /^(Waiting to reconnect after a failed binlog dump request|Connecting to master|Reconnecting after a failed binlog dump request|Waiting to reconnect after a failed master event read|Waiting for the slave SQL thread to free enough relay log space)$/i);
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$slave_sql_thread_warning = 0 if (defined($state) && $state =~ /^Waiting for the next event in relay log|Reading event from the relay log$/i);
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$slave_sql_thread_ok = 0 if (defined($state) && $state =~ /^Has read all relay log; waiting for the slave I\/O thread to update it$/i);
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}
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if ($slave_sql_thread_ko == 0) {
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$position_status = 1;
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$position_status_error .= " Slave replication has connection issue with the master.";
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} elsif (($master_file ne $slave_file || $master_position != $slave_position) && $slave_sql_thread_warning == 0) {
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$position_status = -1;
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$position_status_error .= " Slave replication is late but it's progressing..";
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} elsif (($master_file ne $slave_file || $master_position != $slave_position) && $slave_sql_thread_ok == 0) {
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$position_status = -1;
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$position_status_error .= " Slave replication is late but it's progressing..";
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}
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}
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$self->replication_add($slave_status, "Slave Thread Status '" . $slave->get_id() . "'", $slave_status_error);
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$self->replication_add($position_status, "Position Status '" . $slave->get_id() . "'", $position_status_error);
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}
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sub run {
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my ($self, %options) = @_;
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# $options{sql} = sqlmode object
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if (ref($options{sql}) ne 'ARRAY') {
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$self->{output}->add_option_msg(short_msg => "Need to use --multiple options.");
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$self->{output}->option_exit();
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}
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if (scalar(@{$options{sql}}) < 2) {
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$self->{output}->add_option_msg(short_msg => "Need to specify two MySQL Server.");
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$self->{output}->option_exit();
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}
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my ($msg_error1, $msg_error2);
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my ($sql_one, $sql_two) = @{$options{sql}};
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($self->{$sql_one->get_id()}->{exit}, $msg_error1) = $sql_one->connect(dontquit => 1);
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($self->{$sql_two->get_id()}->{exit}, $msg_error2) = $sql_two->connect(dontquit => 1);
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$self->{output}->output_add(severity => 'OK',
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short_msg => "No problems. Replication is ok.");
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if ($self->{$sql_one->get_id()}->{exit} == -1) {
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$self->{output}->output_add(severity => 'CRITICAL',
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short_msg => "Connection Status '" . $sql_one->get_id() . "': " . $msg_error1);
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} else {
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$self->{output}->output_add(long_msg => "Connection Status '" . $sql_one->get_id() . "' [OK]");
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}
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if ($self->{$sql_two->get_id()}->{exit} == -1) {
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$self->{output}->output_add(severity => 'CRITICAL',
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short_msg => "Connection Status '" . $sql_two->get_id() . "': " . $msg_error2);
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} else {
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$self->{output}->output_add(long_msg => "Connection Status '" . $sql_two->get_id() . "' [OK]");
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}
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$self->check_replication(master => $sql_one, slave => $sql_two);
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$self->check_replication(master => $sql_two, slave => $sql_one);
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$self->{output}->display();
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$self->{output}->exit();
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}
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sub replication_add {
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my ($self, $lstate, $str_display, $lerr) = @_;
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my $status;
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my $status_msg;
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if ($lstate == 0) {
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$status = 'OK';
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} elsif ($lstate == -1) {
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$status = 'WARNING';
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} elsif ($lstate == -2) {
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$status = 'CRITICAL';
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$status_msg = 'SKIP';
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} else {
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$status = 'CRITICAL';
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}
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my $output;
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if (defined($lerr) && $lerr ne "") {
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$output = $str_display . " [" . (defined($status_msg) ? $status_msg : $status) . "] [" . $lerr . "]";
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} else {
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$output = $str_display . " [" . (defined($status_msg) ? $status_msg : $status) . "]";
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}
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if (!$self->{output}->is_status(value => $status, compare => 'ok', litteral => 1)) {
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$self->{output}->output_add(severity => $status,
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short_msg => $output);
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}
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$self->{output}->output_add(long_msg => $output);
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}
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1;
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__END__
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=head1 MODE
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Check MySQL replication master/master (need to use --multiple).
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=over 8
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=item B<--warning>
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Threshold warning in seconds (slave latency).
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=item B<--critical>
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Threshold critical in seconds (slave latency).
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=back
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=cut
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@ -59,6 +59,7 @@ sub new {
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'myisam-keycache-hitrate' => 'database::mysql::mode::myisamkeycachehitrate',
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'qcache-hitrate' => 'database::mysql::mode::qcachehitrate',
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'replication-master-slave' => 'database::mysql::mode::replicationmasterslave',
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'replication-master-master' => 'database::mysql::mode::replicationmastermaster',
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);
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$self->{sql_modes}{mysqlcmd} = 'database::mysql::mysqlcmd';
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