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alexymik/check_mysql_health

Created March 23, 2017 15:09
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check_mysql_health compiled nagios plugin
Raw
check_mysql_health
#! /usr/bin/perl -w
# nagios: -epn
my %ERRORS=( OK => 0, WARNING => 1, CRITICAL => 2, UNKNOWN => 3 );
my %ERRORCODES=( 0 => 'OK', 1 => 'WARNING', 2 => 'CRITICAL', 3 => 'UNKNOWN' );
package DBD::MySQL::Server::Instance::Innodb;
use strict;
our @ISA = qw(DBD::MySQL::Server::Instance);
sub new {
my $class = shift;
my %params = @_;
my $self = {
handle => $params{handle},
internals => undef,
warningrange => $params{warningrange},
criticalrange => $params{criticalrange},
};
bless $self, $class;
$self->init(%params);
return $self;
}
sub init {
my $self = shift;
my %params = @_;
$self->init_nagios();
if ($params{mode} =~ /server::instance::innodb/) {
$self->{internals} =
DBD::MySQL::Server::Instance::Innodb::Internals->new(%params);
}
}
sub nagios {
my $self = shift;
my %params = @_;
if ($params{mode} =~ /server::instance::innodb/) {
$self->{internals}->nagios(%params);
$self->merge_nagios($self->{internals});
}
}
package DBD::MySQL::Server::Instance::Innodb::Internals;
use strict;
our @ISA = qw(DBD::MySQL::Server::Instance::Innodb);
our $internals; # singleton, nur ein einziges mal instantiierbar
sub new {
my $class = shift;
my %params = @_;
unless ($internals) {
$internals = {
handle => $params{handle},
bufferpool_hitrate => undef,
wait_free => undef,
log_waits => undef,
have_innodb => undef,
warningrange => $params{warningrange},
criticalrange => $params{criticalrange},
};
bless($internals, $class);
$internals->init(%params);
}
return($internals);
}
sub init {
my $self = shift;
my %params = @_;
my $dummy;
$self->debug("enter init");
$self->init_nagios();
if (DBD::MySQL::Server::return_first_server()->version_is_minimum("5.1")) {
($dummy, $self->{have_innodb}) = $self->{handle}->fetchrow_array(q{
SELECT ENGINE, SUPPORT FROM INFORMATION_SCHEMA.ENGINES WHERE ENGINE='InnoDB'
});
} else {
($dummy, $self->{have_innodb}) = $self->{handle}->fetchrow_array(q{
SHOW VARIABLES LIKE 'have_innodb'
});
}
if ($self->{have_innodb} eq "NO") {
$self->add_nagios_critical("the innodb engine has a problem (have_innodb=no)");
} elsif ($self->{have_innodb} eq "DISABLED") {
# add_nagios_ok later
} elsif ($params{mode} =~ /server::instance::innodb::bufferpool::hitrate/) {
($dummy, $self->{bufferpool_reads})
= $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Innodb_buffer_pool_reads'
});
($dummy, $self->{bufferpool_read_requests})
= $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Innodb_buffer_pool_read_requests'
});
if (! defined $self->{bufferpool_reads}) {
$self->add_nagios_critical("no innodb buffer pool info available");
} else {
$self->valdiff(\%params, qw(bufferpool_reads
bufferpool_read_requests));
$self->{bufferpool_hitrate_now} =
$self->{delta_bufferpool_read_requests} > 0 ?
100 - (100 * $self->{delta_bufferpool_reads} /
$self->{delta_bufferpool_read_requests}) : 100;
$self->{bufferpool_hitrate} =
$self->{bufferpool_read_requests} > 0 ?
100 - (100 * $self->{bufferpool_reads} /
$self->{bufferpool_read_requests}) : 100;
}
} elsif ($params{mode} =~ /server::instance::innodb::bufferpool::waitfree/) {
($dummy, $self->{bufferpool_wait_free})
= $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Innodb_buffer_pool_wait_free'
});
if (! defined $self->{bufferpool_wait_free}) {
$self->add_nagios_critical("no innodb buffer pool info available");
} else {
$self->valdiff(\%params, qw(bufferpool_wait_free));
$self->{bufferpool_wait_free_rate} =
$self->{delta_bufferpool_wait_free} / $self->{delta_timestamp};
}
} elsif ($params{mode} =~ /server::instance::innodb::logwaits/) {
($dummy, $self->{log_waits})
= $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Innodb_log_waits'
});
if (! defined $self->{log_waits}) {
$self->add_nagios_critical("no innodb log info available");
} else {
$self->valdiff(\%params, qw(log_waits));
$self->{log_waits_rate} =
$self->{delta_log_waits} / $self->{delta_timestamp};
}
} elsif ($params{mode} =~ /server::instance::innodb::needoptimize/) {
#fragmentation=$(($datafree * 100 / $datalength))
#http://www.electrictoolbox.com/optimize-tables-mysql-php/
my @result = $self->{handle}->fetchall_array(q{
SHOW TABLE STATUS WHERE Data_free / Data_length > 0.1 AND Data_free > 102400
});
printf "%s\n", Data::Dumper::Dumper(\@result);
}
}
sub nagios {
my $self = shift;
my %params = @_;
my $now = $params{lookback} ? '_now' : '';
if ($self->{have_innodb} eq "DISABLED") {
$self->add_nagios_ok("the innodb engine has been disabled");
} elsif (! $self->{nagios_level}) {
if ($params{mode} =~ /server::instance::innodb::bufferpool::hitrate/) {
my $refkey = 'bufferpool_hitrate'.($params{lookback} ? '_now' : '');
$self->add_nagios(
$self->check_thresholds($self->{$refkey}, "99:", "95:"),
sprintf "innodb buffer pool hitrate at %.2f%%", $self->{$refkey});
$self->add_perfdata(sprintf "bufferpool_hitrate=%.2f%%;%s;%s;0;100",
$self->{bufferpool_hitrate},
$self->{warningrange}, $self->{criticalrange});
$self->add_perfdata(sprintf "bufferpool_hitrate_now=%.2f%%",
$self->{bufferpool_hitrate_now});
} elsif ($params{mode} =~ /server::instance::innodb::bufferpool::waitfree/) {
$self->add_nagios(
$self->check_thresholds($self->{bufferpool_wait_free_rate}, "1", "10"),
sprintf "%ld innodb buffer pool waits in %ld seconds (%.4f/sec)",
$self->{delta_bufferpool_wait_free}, $self->{delta_timestamp},
$self->{bufferpool_wait_free_rate});
$self->add_perfdata(sprintf "bufferpool_free_waits_rate=%.4f;%s;%s;0;100",
$self->{bufferpool_wait_free_rate},
$self->{warningrange}, $self->{criticalrange});
} elsif ($params{mode} =~ /server::instance::innodb::logwaits/) {
$self->add_nagios(
$self->check_thresholds($self->{log_waits_rate}, "1", "10"),
sprintf "%ld innodb log waits in %ld seconds (%.4f/sec)",
$self->{delta_log_waits}, $self->{delta_timestamp},
$self->{log_waits_rate});
$self->add_perfdata(sprintf "innodb_log_waits_rate=%.4f;%s;%s;0;100",
$self->{log_waits_rate},
$self->{warningrange}, $self->{criticalrange});
}
}
}
package DBD::MySQL::Server::Instance::MyISAM;
use strict;
our @ISA = qw(DBD::MySQL::Server::Instance);
sub new {
my $class = shift;
my %params = @_;
my $self = {
handle => $params{handle},
internals => undef,
warningrange => $params{warningrange},
criticalrange => $params{criticalrange},
};
bless $self, $class;
$self->init(%params);
return $self;
}
sub init {
my $self = shift;
my %params = @_;
$self->init_nagios();
if ($params{mode} =~ /server::instance::myisam/) {
$self->{internals} =
DBD::MySQL::Server::Instance::MyISAM::Internals->new(%params);
}
}
sub nagios {
my $self = shift;
my %params = @_;
if ($params{mode} =~ /server::instance::myisam/) {
$self->{internals}->nagios(%params);
$self->merge_nagios($self->{internals});
}
}
package DBD::MySQL::Server::Instance::MyISAM::Internals;
use strict;
our @ISA = qw(DBD::MySQL::Server::Instance::MyISAM);
our $internals; # singleton, nur ein einziges mal instantiierbar
sub new {
my $class = shift;
my %params = @_;
unless ($internals) {
$internals = {
handle => $params{handle},
keycache_hitrate => undef,
warningrange => $params{warningrange},
criticalrange => $params{criticalrange},
};
bless($internals, $class);
$internals->init(%params);
}
return($internals);
}
sub init {
my $self = shift;
my %params = @_;
my $dummy;
$self->debug("enter init");
$self->init_nagios();
if ($params{mode} =~ /server::instance::myisam::keycache::hitrate/) {
($dummy, $self->{key_reads})
= $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Key_reads'
});
($dummy, $self->{key_read_requests})
= $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Key_read_requests'
});
if (! defined $self->{key_read_requests}) {
$self->add_nagios_critical("no myisam keycache info available");
} else {
$self->valdiff(\%params, qw(key_reads key_read_requests));
$self->{keycache_hitrate} =
$self->{key_read_requests} > 0 ?
100 - (100 * $self->{key_reads} /
$self->{key_read_requests}) : 100;
$self->{keycache_hitrate_now} =
$self->{delta_key_read_requests} > 0 ?
100 - (100 * $self->{delta_key_reads} /
$self->{delta_key_read_requests}) : 100;
}
} elsif ($params{mode} =~ /server::instance::myisam::sonstnochwas/) {
}
}
sub nagios {
my $self = shift;
my %params = @_;
if (! $self->{nagios_level}) {
if ($params{mode} =~ /server::instance::myisam::keycache::hitrate/) {
my $refkey = 'keycache_hitrate'.($params{lookback} ? '_now' : '');
$self->add_nagios(
$self->check_thresholds($self->{$refkey}, "99:", "95:"),
sprintf "myisam keycache hitrate at %.2f%%", $self->{$refkey});
$self->add_perfdata(sprintf "keycache_hitrate=%.2f%%;%s;%s",
$self->{keycache_hitrate},
$self->{warningrange}, $self->{criticalrange});
$self->add_perfdata(sprintf "keycache_hitrate_now=%.2f%%;%s;%s",
$self->{keycache_hitrate_now},
$self->{warningrange}, $self->{criticalrange});
}
}
}
package DBD::MySQL::Server::Instance::Replication;
use strict;
our @ISA = qw(DBD::MySQL::Server::Instance);
sub new {
my $class = shift;
my %params = @_;
my $self = {
handle => $params{handle},
internals => undef,
warningrange => $params{warningrange},
criticalrange => $params{criticalrange},
};
bless $self, $class;
$self->init(%params);
return $self;
}
sub init {
my $self = shift;
my %params = @_;
$self->init_nagios();
if ($params{mode} =~ /server::instance::replication/) {
$self->{internals} =
DBD::MySQL::Server::Instance::Replication::Internals->new(%params);
}
}
sub nagios {
my $self = shift;
my %params = @_;
if ($params{mode} =~ /server::instance::replication/) {
$self->{internals}->nagios(%params);
$self->merge_nagios($self->{internals});
}
}
package DBD::MySQL::Server::Instance::Replication::Internals;
use strict;
our @ISA = qw(DBD::MySQL::Server::Instance::Replication);
our $internals; # singleton, nur ein einziges mal instantiierbar
sub new {
my $class = shift;
my %params = @_;
unless ($internals) {
$internals = {
handle => $params{handle},
seconds_behind_master => undef,
slave_io_running => undef,
slave_sql_running => undef,
warningrange => $params{warningrange},
criticalrange => $params{criticalrange},
};
bless($internals, $class);
$internals->init(%params);
}
return($internals);
}
sub init {
my $self = shift;
my %params = @_;
$self->debug("enter init");
$self->init_nagios();
if ($params{mode} =~ /server::instance::replication::slavelag/) {
# "show slave status", "Seconds_Behind_Master"
my $slavehash = $self->{handle}->selectrow_hashref(q{
SHOW SLAVE STATUS
});
if ((! defined $slavehash->{Seconds_Behind_Master}) &&
(lc $slavehash->{Slave_IO_Running} eq 'no')) {
$self->add_nagios_critical(
"unable to get slave lag, because io thread is not running");
} elsif (! defined $slavehash->{Seconds_Behind_Master}) {
$self->add_nagios_critical(sprintf "unable to get replication info%s",
$self->{handle}->{errstr} ? $self->{handle}->{errstr} : "");
} else {
$self->{seconds_behind_master} = $slavehash->{Seconds_Behind_Master};
}
} elsif ($params{mode} =~ /server::instance::replication::slaveiorunning/) {
# "show slave status", "Slave_IO_Running"
my $slavehash = $self->{handle}->selectrow_hashref(q{
SHOW SLAVE STATUS
});
if (! defined $slavehash->{Slave_IO_Running}) {
$self->add_nagios_critical(sprintf "unable to get replication info%s",
$self->{handle}->{errstr} ? $self->{handle}->{errstr} : "");
} else {
$self->{slave_io_running} = $slavehash->{Slave_IO_Running};
}
} elsif ($params{mode} =~ /server::instance::replication::slavesqlrunning/) {
# "show slave status", "Slave_SQL_Running"
my $slavehash = $self->{handle}->selectrow_hashref(q{
SHOW SLAVE STATUS
});
if (! defined $slavehash->{Slave_SQL_Running}) {
$self->add_nagios_critical(sprintf "unable to get replication info%s",
$self->{handle}->{errstr} ? $self->{handle}->{errstr} : "");
} else {
$self->{slave_sql_running} = $slavehash->{Slave_SQL_Running};
}
}
}
sub nagios {
my $self = shift;
my %params = @_;
if (! $self->{nagios_level}) {
if ($params{mode} =~ /server::instance::replication::slavelag/) {
$self->add_nagios(
$self->check_thresholds($self->{seconds_behind_master}, "10", "20"),
sprintf "Slave is %d seconds behind master",
$self->{seconds_behind_master});
$self->add_perfdata(sprintf "slave_lag=%d;%s;%s",
$self->{seconds_behind_master},
$self->{warningrange}, $self->{criticalrange});
} elsif ($params{mode} =~ /server::instance::replication::slaveiorunning/) {
if (lc $self->{slave_io_running} eq "yes") {
$self->add_nagios_ok("Slave io is running");
} else {
$self->add_nagios_critical("Slave io is not running");
}
} elsif ($params{mode} =~ /server::instance::replication::slavesqlrunning/) {
if (lc $self->{slave_sql_running} eq "yes") {
$self->add_nagios_ok("Slave sql is running");
} else {
$self->add_nagios_critical("Slave sql is not running");
}
}
}
}
package DBD::MySQL::Server::Instance;
use strict;
our @ISA = qw(DBD::MySQL::Server);
sub new {
my $class = shift;
my %params = @_;
my $self = {
handle => $params{handle},
uptime => $params{uptime},
replication_user => $params{replication_user},
warningrange => $params{warningrange},
criticalrange => $params{criticalrange},
threads_connected => undef,
threads_created => undef,
connections => undef,
threadcache_hitrate => undef,
querycache_hitrate => undef,
lowmem_prunes_per_sec => undef,
slow_queries_per_sec => undef,
longrunners => undef,
tablecache_hitrate => undef,
index_usage => undef,
engine_innodb => undef,
engine_myisam => undef,
replication => undef,
};
bless $self, $class;
$self->init(%params);
return $self;
}
sub init {
my $self = shift;
my %params = @_;
my $dummy;
$self->init_nagios();
if ($params{mode} =~ /server::instance::connectedthreads/) {
($dummy, $self->{threads_connected}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Threads_connected'
});
} elsif ($params{mode} =~ /server::instance::createdthreads/) {
($dummy, $self->{threads_created}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Threads_created'
});
$self->valdiff(\%params, qw(threads_created));
$self->{threads_created_per_sec} = $self->{delta_threads_created} /
$self->{delta_timestamp};
} elsif ($params{mode} =~ /server::instance::runningthreads/) {
($dummy, $self->{threads_running}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Threads_running'
});
} elsif ($params{mode} =~ /server::instance::cachedthreads/) {
($dummy, $self->{threads_cached}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Threads_cached'
});
} elsif ($params{mode} =~ /server::instance::abortedconnects/) {
($dummy, $self->{connects_aborted}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Aborted_connects'
});
$self->valdiff(\%params, qw(connects_aborted));
$self->{connects_aborted_per_sec} = $self->{delta_connects_aborted} /
$self->{delta_timestamp};
} elsif ($params{mode} =~ /server::instance::abortedclients/) {
($dummy, $self->{clients_aborted}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Aborted_clients'
});
$self->valdiff(\%params, qw(clients_aborted));
$self->{clients_aborted_per_sec} = $self->{delta_clients_aborted} /
$self->{delta_timestamp};
} elsif ($params{mode} =~ /server::instance::threadcachehitrate/) {
($dummy, $self->{threads_created}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Threads_created'
});
($dummy, $self->{connections}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Connections'
});
$self->valdiff(\%params, qw(threads_created connections));
if ($self->{delta_connections} > 0) {
$self->{threadcache_hitrate_now} =
100 - ($self->{delta_threads_created} * 100.0 /
$self->{delta_connections});
} else {
$self->{threadcache_hitrate_now} = 100;
}
$self->{threadcache_hitrate} = 100 -
($self->{threads_created} * 100.0 / $self->{connections});
$self->{connections_per_sec} = $self->{delta_connections} /
$self->{delta_timestamp};
} elsif ($params{mode} =~ /server::instance::querycachehitrate/) {
($dummy, $self->{qcache_inserts}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Qcache_inserts'
});
($dummy, $self->{qcache_not_cached}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Qcache_not_cached'
});
($dummy, $self->{com_select}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Com_select'
});
($dummy, $self->{qcache_hits}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Qcache_hits'
});
# SHOW VARIABLES WHERE Variable_name = 'have_query_cache' for 5.x, but LIKE is compatible
($dummy, $self->{have_query_cache}) = $self->{handle}->fetchrow_array(q{
SHOW VARIABLES LIKE 'have_query_cache'
});
# SHOW VARIABLES WHERE Variable_name = 'query_cache_size'
($dummy, $self->{query_cache_size}) = $self->{handle}->fetchrow_array(q{
SHOW VARIABLES LIKE 'query_cache_size'
});
$self->valdiff(\%params, qw(com_select qcache_hits));
$self->{querycache_hitrate_now} =
($self->{delta_com_select} + $self->{delta_qcache_hits}) > 0 ?
100 * $self->{delta_qcache_hits} /
($self->{delta_com_select} + $self->{delta_qcache_hits}) :
0;
$self->{querycache_hitrate} =
($self->{qcache_not_cached} + $self->{qcache_inserts} + $self->{qcache_hits}) > 0 ?
100 * $self->{qcache_hits} /
($self->{qcache_not_cached} + $self->{qcache_inserts} + $self->{qcache_hits}) :
0;
$self->{selects_per_sec} =
$self->{delta_com_select} / $self->{delta_timestamp};
} elsif ($params{mode} =~ /server::instance::querycachelowmemprunes/) {
($dummy, $self->{lowmem_prunes}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Qcache_lowmem_prunes'
});
$self->valdiff(\%params, qw(lowmem_prunes));
$self->{lowmem_prunes_per_sec} = $self->{delta_lowmem_prunes} /
$self->{delta_timestamp};
} elsif ($params{mode} =~ /server::instance::slowqueries/) {
($dummy, $self->{slow_queries}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Slow_queries'
});
$self->valdiff(\%params, qw(slow_queries));
$self->{slow_queries_per_sec} = $self->{delta_slow_queries} /
$self->{delta_timestamp};
} elsif ($params{mode} =~ /server::instance::longprocs/) {
if (DBD::MySQL::Server::return_first_server()->version_is_minimum("5.1")) {
($self->{longrunners}) = $self->{handle}->fetchrow_array(qq(
SELECT
COUNT(*)
FROM
information_schema.processlist
WHERE user <> ?
AND id <> CONNECTION_ID()
AND time > 60
AND command <> 'Sleep'
), $self->{replication_user});
} else {
$self->{longrunners} = 0 if ! defined $self->{longrunners};
foreach ($self->{handle}->fetchall_array(q{
SHOW PROCESSLIST
})) {
my($id, $user, $host, $db, $command, $tme, $state, $info) = @{$_};
if (($user ne $self->{replication_user}) &&
($tme > 60) &&
($command ne 'Sleep')) {
$self->{longrunners}++;
}
}
}
} elsif ($params{mode} =~ /server::instance::tablecachehitrate/) {
($dummy, $self->{open_tables}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Open_tables'
});
($dummy, $self->{opened_tables}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Opened_tables'
});
if (DBD::MySQL::Server::return_first_server()->version_is_minimum("5.1.3")) {
# SHOW VARIABLES WHERE Variable_name = 'table_open_cache'
($dummy, $self->{table_cache}) = $self->{handle}->fetchrow_array(q{
SHOW VARIABLES LIKE 'table_open_cache'
});
} else {
# SHOW VARIABLES WHERE Variable_name = 'table_cache'
($dummy, $self->{table_cache}) = $self->{handle}->fetchrow_array(q{
SHOW VARIABLES LIKE 'table_cache'
});
}
$self->{table_cache} ||= 0;
#$self->valdiff(\%params, qw(open_tables opened_tables table_cache));
# _now ist hier sinnlos, da opened_tables waechst, aber open_tables wieder
# schrumpfen kann weil tabellen geschlossen werden.
if ($self->{opened_tables} != 0 && $self->{table_cache} != 0) {
$self->{tablecache_hitrate} =
100 * $self->{open_tables} / $self->{opened_tables};
$self->{tablecache_fillrate} =
100 * $self->{open_tables} / $self->{table_cache};
} elsif ($self->{opened_tables} == 0 && $self->{table_cache} != 0) {
$self->{tablecache_hitrate} = 100;
$self->{tablecache_fillrate} =
100 * $self->{open_tables} / $self->{table_cache};
} else {
$self->{tablecache_hitrate} = 0;
$self->{tablecache_fillrate} = 0;
$self->add_nagios_critical("no table cache");
}
} elsif ($params{mode} =~ /server::instance::tablelockcontention/) {
($dummy, $self->{table_locks_waited}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Table_locks_waited'
});
($dummy, $self->{table_locks_immediate}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Table_locks_immediate'
});
$self->valdiff(\%params, qw(table_locks_waited table_locks_immediate));
$self->{table_lock_contention} =
($self->{table_locks_waited} + $self->{table_locks_immediate}) > 0 ?
100 * $self->{table_locks_waited} /
($self->{table_locks_waited} + $self->{table_locks_immediate}) :
100;
$self->{table_lock_contention_now} =
($self->{delta_table_locks_waited} + $self->{delta_table_locks_immediate}) > 0 ?
100 * $self->{delta_table_locks_waited} /
($self->{delta_table_locks_waited} + $self->{delta_table_locks_immediate}) :
100;
} elsif ($params{mode} =~ /server::instance::tableindexusage/) {
# http://johnjacobm.wordpress.com/2007/06/
# formula for calculating the percentage of full table scans
($dummy, $self->{handler_read_first}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Handler_read_first'
});
($dummy, $self->{handler_read_key}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Handler_read_key'
});
($dummy, $self->{handler_read_next}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Handler_read_next'
});
($dummy, $self->{handler_read_prev}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Handler_read_prev'
});
($dummy, $self->{handler_read_rnd}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Handler_read_rnd'
});
($dummy, $self->{handler_read_rnd_next}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Handler_read_rnd_next'
});
$self->valdiff(\%params, qw(handler_read_first handler_read_key
handler_read_next handler_read_prev handler_read_rnd
handler_read_rnd_next));
my $delta_reads = $self->{delta_handler_read_first} +
$self->{delta_handler_read_key} +
$self->{delta_handler_read_next} +
$self->{delta_handler_read_prev} +
$self->{delta_handler_read_rnd} +
$self->{delta_handler_read_rnd_next};
my $reads = $self->{handler_read_first} +
$self->{handler_read_key} +
$self->{handler_read_next} +
$self->{handler_read_prev} +
$self->{handler_read_rnd} +
$self->{handler_read_rnd_next};
$self->{index_usage_now} = ($delta_reads == 0) ? 0 :
100 - (100.0 * ($self->{delta_handler_read_rnd} +
$self->{delta_handler_read_rnd_next}) /
$delta_reads);
$self->{index_usage} = ($reads == 0) ? 0 :
100 - (100.0 * ($self->{handler_read_rnd} +
$self->{handler_read_rnd_next}) /
$reads);
} elsif ($params{mode} =~ /server::instance::tabletmpondisk/) {
($dummy, $self->{created_tmp_tables}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Created_tmp_tables'
});
($dummy, $self->{created_tmp_disk_tables}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Created_tmp_disk_tables'
});
$self->valdiff(\%params, qw(created_tmp_tables created_tmp_disk_tables));
$self->{pct_tmp_on_disk} = $self->{created_tmp_tables} > 0 ?
100 * $self->{created_tmp_disk_tables} / $self->{created_tmp_tables} :
100;
$self->{pct_tmp_on_disk_now} = $self->{delta_created_tmp_tables} > 0 ?
100 * $self->{delta_created_tmp_disk_tables} / $self->{delta_created_tmp_tables} :
100;
} elsif ($params{mode} =~ /server::instance::openfiles/) {
($dummy, $self->{open_files_limit}) = $self->{handle}->fetchrow_array(q{
SHOW VARIABLES LIKE 'open_files_limit'
});
($dummy, $self->{open_files}) = $self->{handle}->fetchrow_array(q{
SHOW /*!50000 global */ STATUS LIKE 'Open_files'
});
$self->{pct_open_files} = 100 * $self->{open_files} / $self->{open_files_limit};
} elsif ($params{mode} =~ /server::instance::needoptimize/) {
$self->{fragmented} = [];
#http://www.electrictoolbox.com/optimize-tables-mysql-php/
my @result = $self->{handle}->fetchall_array(q{
SHOW TABLE STATUS
});
foreach (@result) {
my ($name, $engine, $data_length, $data_free) =
($_->[0], $_->[1], $_->[6 ], $_->[9]);
next if ($params{name} && $params{name} ne $name);
my $fragmentation = $data_length ? $data_free * 100 / $data_length : 0;
push(@{$self->{fragmented}},
[$name, $fragmentation, $data_length, $data_free]);
}
} elsif ($params{mode} =~ /server::instance::myisam/) {
$self->{engine_myisam} = DBD::MySQL::Server::Instance::MyISAM->new(
%params
);
} elsif ($params{mode} =~ /server::instance::innodb/) {
$self->{engine_innodb} = DBD::MySQL::Server::Instance::Innodb->new(
%params
);
} elsif ($params{mode} =~ /server::instance::replication/) {
$self->{replication} = DBD::MySQL::Server::Instance::Replication->new(
%params
);
}
}
sub nagios {
my $self = shift;
my %params = @_;
if (! $self->{nagios_level}) {
if ($params{mode} =~ /server::instance::connectedthreads/) {
$self->add_nagios(
$self->check_thresholds($self->{threads_connected}, 10, 20),
sprintf "%d client connection threads", $self->{threads_connected});
$self->add_perfdata(sprintf "threads_connected=%d;%d;%d",
$self->{threads_connected},
$self->{warningrange}, $self->{criticalrange});
} elsif ($params{mode} =~ /server::instance::createdthreads/) {
$self->add_nagios(
$self->check_thresholds($self->{threads_created_per_sec}, 10, 20),
sprintf "%.2f threads created/sec", $self->{threads_created_per_sec});
$self->add_perfdata(sprintf "threads_created_per_sec=%.2f;%.2f;%.2f",
$self->{threads_created_per_sec},
$self->{warningrange}, $self->{criticalrange});
} elsif ($params{mode} =~ /server::instance::runningthreads/) {
$self->add_nagios(
$self->check_thresholds($self->{threads_running}, 10, 20),
sprintf "%d running threads", $self->{threads_running});
$self->add_perfdata(sprintf "threads_running=%d;%d;%d",
$self->{threads_running},
$self->{warningrange}, $self->{criticalrange});
} elsif ($params{mode} =~ /server::instance::cachedthreads/) {
$self->add_nagios(
$self->check_thresholds($self->{threads_cached}, 10, 20),
sprintf "%d cached threads", $self->{threads_cached});
$self->add_perfdata(sprintf "threads_cached=%d;%d;%d",
$self->{threads_cached},
$self->{warningrange}, $self->{criticalrange});
} elsif ($params{mode} =~ /server::instance::abortedconnects/) {
$self->add_nagios(
$self->check_thresholds($self->{connects_aborted_per_sec}, 1, 5),
sprintf "%.2f aborted connections/sec", $self->{connects_aborted_per_sec});
$self->add_perfdata(sprintf "connects_aborted_per_sec=%.2f;%.2f;%.2f",
$self->{connects_aborted_per_sec},
$self->{warningrange}, $self->{criticalrange});
} elsif ($params{mode} =~ /server::instance::abortedclients/) {
$self->add_nagios(
$self->check_thresholds($self->{clients_aborted_per_sec}, 1, 5),
sprintf "%.2f aborted (client died) connections/sec", $self->{clients_aborted_per_sec});
$self->add_perfdata(sprintf "clients_aborted_per_sec=%.2f;%.2f;%.2f",
$self->{clients_aborted_per_sec},
$self->{warningrange}, $self->{criticalrange});
} elsif ($params{mode} =~ /server::instance::threadcachehitrate/) {
my $refkey = 'threadcache_hitrate'.($params{lookback} ? '_now' : '');
$self->add_nagios(
$self->check_thresholds($self->{$refkey}, "90:", "80:"),
sprintf "thread cache hitrate %.2f%%", $self->{$refkey});
$self->add_perfdata(sprintf "thread_cache_hitrate=%.2f%%;%s;%s",
$self->{threadcache_hitrate},
$self->{warningrange}, $self->{criticalrange});
$self->add_perfdata(sprintf "thread_cache_hitrate_now=%.2f%%",
$self->{threadcache_hitrate_now});
$self->add_perfdata(sprintf "connections_per_sec=%.2f",
$self->{connections_per_sec});
} elsif ($params{mode} =~ /server::instance::querycachehitrate/) {
my $refkey = 'querycache_hitrate'.($params{lookback} ? '_now' : '');
if ((lc $self->{have_query_cache} eq 'yes') && ($self->{query_cache_size})) {
$self->add_nagios(
$self->check_thresholds($self->{$refkey}, "90:", "80:"),
sprintf "query cache hitrate %.2f%%", $self->{$refkey});
} else {
$self->check_thresholds($self->{$refkey}, "90:", "80:");
$self->add_nagios_ok(
sprintf "query cache hitrate %.2f%% (because it's turned off)",
$self->{querycache_hitrate});
}
$self->add_perfdata(sprintf "qcache_hitrate=%.2f%%;%s;%s",
$self->{querycache_hitrate},
$self->{warningrange}, $self->{criticalrange});
$self->add_perfdata(sprintf "qcache_hitrate_now=%.2f%%",
$self->{querycache_hitrate_now});
$self->add_perfdata(sprintf "selects_per_sec=%.2f",
$self->{selects_per_sec});
} elsif ($params{mode} =~ /server::instance::querycachelowmemprunes/) {
$self->add_nagios(
$self->check_thresholds($self->{lowmem_prunes_per_sec}, "1", "10"),
sprintf "%d query cache lowmem prunes in %d seconds (%.2f/sec)",
$self->{delta_lowmem_prunes}, $self->{delta_timestamp},
$self->{lowmem_prunes_per_sec});
$self->add_perfdata(sprintf "qcache_lowmem_prunes_rate=%.2f;%s;%s",
$self->{lowmem_prunes_per_sec},
$self->{warningrange}, $self->{criticalrange});
} elsif ($params{mode} =~ /server::instance::slowqueries/) {
$self->add_nagios(
$self->check_thresholds($self->{slow_queries_per_sec}, "0.1", "1"),
sprintf "%d slow queries in %d seconds (%.2f/sec)",
$self->{delta_slow_queries}, $self->{delta_timestamp},
$self->{slow_queries_per_sec});
$self->add_perfdata(sprintf "slow_queries_rate=%.2f%%;%s;%s",
$self->{slow_queries_per_sec},
$self->{warningrange}, $self->{criticalrange});
} elsif ($params{mode} =~ /server::instance::longprocs/) {
$self->add_nagios(
$self->check_thresholds($self->{longrunners}, 10, 20),
sprintf "%d long running processes", $self->{longrunners});
$self->add_perfdata(sprintf "long_running_procs=%d;%d;%d",
$self->{longrunners},
$self->{warningrange}, $self->{criticalrange});
} elsif ($params{mode} =~ /server::instance::tablecachehitrate/) {
if ($self->{tablecache_fillrate} < 95) {
$self->add_nagios_ok(
sprintf "table cache hitrate %.2f%%, %.2f%% filled",
$self->{tablecache_hitrate},
$self->{tablecache_fillrate});
$self->check_thresholds($self->{tablecache_hitrate}, "99:", "95:");
} else {
$self->add_nagios(
$self->check_thresholds($self->{tablecache_hitrate}, "99:", "95:"),
sprintf "table cache hitrate %.2f%%", $self->{tablecache_hitrate});
}
$self->add_perfdata(sprintf "tablecache_hitrate=%.2f%%;%s;%s",
$self->{tablecache_hitrate},
$self->{warningrange}, $self->{criticalrange});
$self->add_perfdata(sprintf "tablecache_fillrate=%.2f%%",
$self->{tablecache_fillrate});
} elsif ($params{mode} =~ /server::instance::tablelockcontention/) {
my $refkey = 'table_lock_contention'.($params{lookback} ? '_now' : '');
if ($self->{uptime} > 10800) { # MySQL Bug #30599
$self->add_nagios(
$self->check_thresholds($self->{$refkey}, "1", "2"),
sprintf "table lock contention %.2f%%", $self->{$refkey});
} else {
$self->check_thresholds($self->{$refkey}, "1", "2");
$self->add_nagios_ok(
sprintf "table lock contention %.2f%% (uptime < 10800)",
$self->{$refkey});
}
$self->add_perfdata(sprintf "tablelock_contention=%.2f%%;%s;%s",
$self->{table_lock_contention},
$self->{warningrange}, $self->{criticalrange});
$self->add_perfdata(sprintf "tablelock_contention_now=%.2f%%",
$self->{table_lock_contention_now});
} elsif ($params{mode} =~ /server::instance::tableindexusage/) {
my $refkey = 'index_usage'.($params{lookback} ? '_now' : '');
$self->add_nagios(
$self->check_thresholds($self->{$refkey}, "90:", "80:"),
sprintf "index usage %.2f%%", $self->{$refkey});
$self->add_perfdata(sprintf "index_usage=%.2f%%;%s;%s",
$self->{index_usage},
$self->{warningrange}, $self->{criticalrange});
$self->add_perfdata(sprintf "index_usage_now=%.2f%%",
$self->{index_usage_now});
} elsif ($params{mode} =~ /server::instance::tabletmpondisk/) {
my $refkey = 'pct_tmp_on_disk'.($params{lookback} ? '_now' : '');
$self->add_nagios(
$self->check_thresholds($self->{$refkey}, "25", "50"),
sprintf "%.2f%% of %d tables were created on disk",
$self->{$refkey}, $self->{delta_created_tmp_tables});
$self->add_perfdata(sprintf "pct_tmp_table_on_disk=%.2f%%;%s;%s",
$self->{pct_tmp_on_disk},
$self->{warningrange}, $self->{criticalrange});
$self->add_perfdata(sprintf "pct_tmp_table_on_disk_now=%.2f%%",
$self->{pct_tmp_on_disk_now});
} elsif ($params{mode} =~ /server::instance::openfiles/) {
$self->add_nagios(
$self->check_thresholds($self->{pct_open_files}, 80, 95),
sprintf "%.2f%% of the open files limit reached (%d of max. %d)",
$self->{pct_open_files},
$self->{open_files}, $self->{open_files_limit});
$self->add_perfdata(sprintf "pct_open_files=%.3f%%;%.3f;%.3f",
$self->{pct_open_files},
$self->{warningrange},
$self->{criticalrange});
$self->add_perfdata(sprintf "open_files=%d;%d;%d",
$self->{open_files},
$self->{open_files_limit} * $self->{warningrange} / 100,
$self->{open_files_limit} * $self->{criticalrange} / 100);
} elsif ($params{mode} =~ /server::instance::needoptimize/) {
foreach (@{$self->{fragmented}}) {
$self->add_nagios(
$self->check_thresholds($_->[1], 10, 25),
sprintf "table %s is %.2f%% fragmented", $_->[0], $_->[1]);
if ($params{name}) {
$self->add_perfdata(sprintf "'%s_frag'=%.2f%%;%d;%d",
$_->[0], $_->[1], $self->{warningrange}, $self->{criticalrange});
}
}
} elsif ($params{mode} =~ /server::instance::myisam/) {
$self->{engine_myisam}->nagios(%params);
$self->merge_nagios($self->{engine_myisam});
} elsif ($params{mode} =~ /server::instance::innodb/) {
$self->{engine_innodb}->nagios(%params);
$self->merge_nagios($self->{engine_innodb});
} elsif ($params{mode} =~ /server::instance::replication/) {
$self->{replication}->nagios(%params);
$self->merge_nagios($self->{replication});
}
}
}
package DBD::MySQL::Server;
use strict;
use Time::HiRes;
use IO::File;
use File::Copy 'cp';
use Data::Dumper;
{
our $verbose = 0;
our $scream = 0; # scream if something is not implemented
our $access = "dbi"; # how do we access the database.
our $my_modules_dyn_dir = ""; # where we look for self-written extensions
my @servers = ();
my $initerrors = undef;
sub add_server {
push(@servers, shift);
}
sub return_servers {
return @servers;
}
sub return_first_server() {
return $servers[0];
}
}
sub new {
my $class = shift;
my %params = @_;
my $self = {
mode => $params{mode},
access => $params{method} || 'dbi',
hostname => $params{hostname},
database => $params{database} || 'information_schema',
port => $params{port},
socket => $params{socket},
username => $params{username},
password => $params{password},
replication_user => $params{replication_user},
mycnf => $params{mycnf},
mycnfgroup => $params{mycnfgroup},
timeout => $params{timeout},
warningrange => $params{warningrange},
criticalrange => $params{criticalrange},
verbose => $params{verbose},
report => $params{report},
negate => $params{negate},
labelformat => $params{labelformat},
version => 'unknown',
instance => undef,
handle => undef,
};
bless $self, $class;
$self->init_nagios();
if ($self->dbconnect(%params)) {
($self->{dummy}, $self->{version}) = $self->{handle}->fetchrow_array(
#q{ SHOW VARIABLES WHERE Variable_name = 'version' }
q{ SHOW VARIABLES LIKE 'version' }
);
$self->{version} = (split "-", $self->{version})[0];
($self->{dummy}, $self->{uptime}) = $self->{handle}->fetchrow_array(
q{ SHOW STATUS LIKE 'Uptime' }
);
DBD::MySQL::Server::add_server($self);
$self->init(%params);
}
return $self;
}
sub init {
my $self = shift;
my %params = @_;
$params{handle} = $self->{handle};
$params{uptime} = $self->{uptime};
$self->set_global_db_thresholds(\%params);
if ($params{mode} =~ /^server::instance/) {
$self->{instance} = DBD::MySQL::Server::Instance->new(%params);
} elsif ($params{mode} =~ /^server::sql/) {
$self->set_local_db_thresholds(%params);
if ($params{regexp}) {
# sql output is treated as text
if ($params{name2} eq $params{name}) {
$self->add_nagios_unknown(sprintf "where's the regexp????");
} else {
$self->{genericsql} =
$self->{handle}->fetchrow_array($params{selectname});
if (! defined $self->{genericsql}) {
$self->add_nagios_unknown(sprintf "got no valid response for %s",
$params{selectname});
}
}
} else {
# sql output must be a number (or array of numbers)
@{$self->{genericsql}} =
$self->{handle}->fetchrow_array($params{selectname});
if ($self->{handle}->{errstr}) {
$self->add_nagios_unknown(sprintf "got no valid response for %s: %s",
$params{selectname}, $self->{handle}->{errstr});
} elsif (! (defined $self->{genericsql} &&
(scalar(grep {
/^[+-]?(?:\d+(?:\.\d*)?|\.\d+)$/
} @{$self->{genericsql}})) ==
scalar(@{$self->{genericsql}}))) {
$self->add_nagios_unknown(sprintf "got no valid response for %s",
$params{selectname});
} elsif (! defined $self->{genericsql}) {
$self->add_nagios_unknown(sprintf "got no valid response for %s",
$params{selectname});
} else {
# name2 in array
# units in array
}
}
} elsif ($params{mode} =~ /^server::uptime/) {
# already set with the connection. but use minutes here
} elsif ($params{mode} =~ /^server::connectiontime/) {
$self->{connection_time} = $self->{tac} - $self->{tic};
} elsif ($params{mode} =~ /^my::([^:.]+)/) {
my $class = $1;
my $loaderror = undef;
substr($class, 0, 1) = uc substr($class, 0, 1);
foreach my $libpath (split(":", $DBD::MySQL::Server::my_modules_dyn_dir)) {
foreach my $extmod (glob $libpath."/CheckMySQLHealth*.pm") {
eval {
$self->trace(sprintf "loading module %s", $extmod);
require $extmod;
};
if ($@) {
$loaderror = $extmod;
$self->trace(sprintf "failed loading module %s: %s", $extmod, $@);
}
}
}
my $obj = {
handle => $params{handle},
warningrange => $params{warningrange},
criticalrange => $params{criticalrange},
};
bless $obj, "My$class";
$self->{my} = $obj;
if ($self->{my}->isa("DBD::MySQL::Server")) {
my $dos_init = $self->can("init");
my $dos_nagios = $self->can("nagios");
my $my_init = $self->{my}->can("init");
my $my_nagios = $self->{my}->can("nagios");
if ($my_init == $dos_init) {
$self->add_nagios_unknown(
sprintf "Class %s needs an init() method", ref($self->{my}));
} elsif ($my_nagios == $dos_nagios) {
$self->add_nagios_unknown(
sprintf "Class %s needs a nagios() method", ref($self->{my}));
} else {
$self->{my}->init_nagios(%params);
$self->{my}->init(%params);
}
} else {
$self->add_nagios_unknown(
sprintf "Class %s is not a subclass of DBD::MySQL::Server%s",
ref($self->{my}),
$loaderror ? sprintf " (syntax error in %s?)", $loaderror : "" );
}
} else {
printf "broken mode %s\n", $params{mode};
}
}
sub dump {
my $self = shift;
my $message = shift || "";
printf "%s %s\n", $message, Data::Dumper::Dumper($self);
}
sub nagios {
my $self = shift;
my %params = @_;
if (! $self->{nagios_level}) {
if ($params{mode} =~ /^server::instance/) {
$self->{instance}->nagios(%params);
$self->merge_nagios($self->{instance});
} elsif ($params{mode} =~ /^server::database/) {
$self->{database}->nagios(%params);
$self->merge_nagios($self->{database});
} elsif ($params{mode} =~ /^server::uptime/) {
$self->add_nagios(
$self->check_thresholds($self->{uptime} / 60, "10:", "5:"),
sprintf "database is up since %d minutes", $self->{uptime} / 60);
$self->add_perfdata(sprintf "uptime=%ds",
$self->{uptime});
} elsif ($params{mode} =~ /^server::connectiontime/) {
$self->add_nagios(
$self->check_thresholds($self->{connection_time}, 1, 5),
sprintf "%.2f seconds to connect as %s",
$self->{connection_time}, ($self->{username} || getpwuid($<)));
$self->add_perfdata(sprintf "connection_time=%.4fs;%d;%d",
$self->{connection_time},
$self->{warningrange}, $self->{criticalrange});
} elsif ($params{mode} =~ /^server::sql/) {
if ($params{regexp}) {
if (substr($params{name2}, 0, 1) eq '!') {
$params{name2} =~ s/^!//;
if ($self->{genericsql} !~ /$params{name2}/) {
$self->add_nagios_ok(
sprintf "output %s does not match pattern %s",
$self->{genericsql}, $params{name2});
} else {
$self->add_nagios_critical(
sprintf "output %s matches pattern %s",
$self->{genericsql}, $params{name2});
}
} else {
if ($self->{genericsql} =~ /$params{name2}/) {
$self->add_nagios_ok(
sprintf "output %s matches pattern %s",
$self->{genericsql}, $params{name2});
} else {
$self->add_nagios_critical(
sprintf "output %s does not match pattern %s",
$self->{genericsql}, $params{name2});
}
}
} else {
$self->add_nagios(
# the first item in the list will trigger the threshold values
$self->check_thresholds($self->{genericsql}[0], 1, 5),
sprintf "%s: %s%s",
$params{name2} ? lc $params{name2} : lc $params{selectname},
# float as float, integers as integers
join(" ", map {
(sprintf("%d", $_) eq $_) ? $_ : sprintf("%f", $_)
} @{$self->{genericsql}}),
$params{units} ? $params{units} : "");
my $i = 0;
# workaround... getting the column names from the database would be nicer
my @names2_arr = split(/\s+/, $params{name2});
foreach my $t (@{$self->{genericsql}}) {
$self->add_perfdata(sprintf "\'%s\'=%s%s;%s;%s",
$names2_arr[$i] ? lc $names2_arr[$i] : lc $params{selectname},
# float as float, integers as integers
(sprintf("%d", $t) eq $t) ? $t : sprintf("%f", $t),
$params{units} ? $params{units} : "",
($i == 0) ? $self->{warningrange} : "",
($i == 0) ? $self->{criticalrange} : ""
);
$i++;
}
}
} elsif ($params{mode} =~ /^my::([^:.]+)/) {
$self->{my}->nagios(%params);
$self->merge_nagios($self->{my});
}
}
}
sub init_nagios {
my $self = shift;
no strict 'refs';
if (! ref($self)) {
my $nagiosvar = $self."::nagios";
my $nagioslevelvar = $self."::nagios_level";
$$nagiosvar = {
messages => {
0 => [],
1 => [],
2 => [],
3 => [],
},
perfdata => [],
};
$$nagioslevelvar = $ERRORS{OK},
} else {
$self->{nagios} = {
messages => {
0 => [],
1 => [],
2 => [],
3 => [],
},
perfdata => [],
};
$self->{nagios_level} = $ERRORS{OK},
}
}
sub check_thresholds {
my $self = shift;
my $value = shift;
my $defaultwarningrange = shift;
my $defaultcriticalrange = shift;
my $level = $ERRORS{OK};
$self->{warningrange} = defined $self->{warningrange} ?
$self->{warningrange} : $defaultwarningrange;
$self->{criticalrange} = defined $self->{criticalrange} ?
$self->{criticalrange} : $defaultcriticalrange;
if ($self->{warningrange} =~ /^([-+]?[0-9]*\.?[0-9]+)$/) {
# warning = 10, warn if > 10 or < 0
$level = $ERRORS{WARNING}
if ($value > $1 || $value < 0);
} elsif ($self->{warningrange} =~ /^([-+]?[0-9]*\.?[0-9]+):$/) {
# warning = 10:, warn if < 10
$level = $ERRORS{WARNING}
if ($value < $1);
} elsif ($self->{warningrange} =~ /^~:([-+]?[0-9]*\.?[0-9]+)$/) {
# warning = ~:10, warn if > 10
$level = $ERRORS{WARNING}
if ($value > $1);
} elsif ($self->{warningrange} =~ /^([-+]?[0-9]*\.?[0-9]+):([-+]?[0-9]*\.?[0-9]+)$/) {
# warning = 10:20, warn if < 10 or > 20
$level = $ERRORS{WARNING}
if ($value < $1 || $value > $2);
} elsif ($self->{warningrange} =~ /^@([-+]?[0-9]*\.?[0-9]+):([-+]?[0-9]*\.?[0-9]+)$/) {
# warning = @10:20, warn if >= 10 and <= 20
$level = $ERRORS{WARNING}
if ($value >= $1 && $value <= $2);
}
if ($self->{criticalrange} =~ /^([-+]?[0-9]*\.?[0-9]+)$/) {
# critical = 10, crit if > 10 or < 0
$level = $ERRORS{CRITICAL}
if ($value > $1 || $value < 0);
} elsif ($self->{criticalrange} =~ /^([-+]?[0-9]*\.?[0-9]+):$/) {
# critical = 10:, crit if < 10
$level = $ERRORS{CRITICAL}
if ($value < $1);
} elsif ($self->{criticalrange} =~ /^~:([-+]?[0-9]*\.?[0-9]+)$/) {
# critical = ~:10, crit if > 10
$level = $ERRORS{CRITICAL}
if ($value > $1);
} elsif ($self->{criticalrange} =~ /^([-+]?[0-9]*\.?[0-9]+):([-+]?[0-9]*\.?[0-9]+)$/) {
# critical = 10:20, crit if < 10 or > 20
$level = $ERRORS{CRITICAL}
if ($value < $1 || $value > $2);
} elsif ($self->{criticalrange} =~ /^@([-+]?[0-9]*\.?[0-9]+):([-+]?[0-9]*\.?[0-9]+)$/) {
# critical = @10:20, crit if >= 10 and <= 20
$level = $ERRORS{CRITICAL}
if ($value >= $1 && $value <= $2);
}
return $level;
#
# syntax error must be reported with returncode -1
#
}
sub add_nagios {
my $self = shift;
my $level = shift;
my $message = shift;
push(@{$self->{nagios}->{messages}->{$level}}, $message);
# recalc current level
foreach my $llevel (qw(CRITICAL WARNING UNKNOWN OK)) {
if (scalar(@{$self->{nagios}->{messages}->{$ERRORS{$llevel}}})) {
$self->{nagios_level} = $ERRORS{$llevel};
}
}
}
sub add_nagios_ok {
my $self = shift;
my $message = shift;
$self->add_nagios($ERRORS{OK}, $message);
}
sub add_nagios_warning {
my $self = shift;
my $message = shift;
$self->add_nagios($ERRORS{WARNING}, $message);
}
sub add_nagios_critical {
my $self = shift;
my $message = shift;
$self->add_nagios($ERRORS{CRITICAL}, $message);
}
sub add_nagios_unknown {
my $self = shift;
my $message = shift;
$self->add_nagios($ERRORS{UNKNOWN}, $message);
}
sub add_perfdata {
my $self = shift;
my $data = shift;
push(@{$self->{nagios}->{perfdata}}, $data);
}
sub merge_nagios {
my $self = shift;
my $child = shift;
foreach my $level (0..3) {
foreach (@{$child->{nagios}->{messages}->{$level}}) {
$self->add_nagios($level, $_);
}
#push(@{$self->{nagios}->{messages}->{$level}},
# @{$child->{nagios}->{messages}->{$level}});
}
push(@{$self->{nagios}->{perfdata}}, @{$child->{nagios}->{perfdata}});
}
sub calculate_result {
my $self = shift;
my $labels = shift || {};
my $multiline = 0;
map {
$self->{nagios_level} = $ERRORS{$_} if
(scalar(@{$self->{nagios}->{messages}->{$ERRORS{$_}}}));
} ("OK", "UNKNOWN", "WARNING", "CRITICAL");
if ($ENV{NRPE_MULTILINESUPPORT} &&
length join(" ", @{$self->{nagios}->{perfdata}}) > 200) {
$multiline = 1;
}
my $all_messages = join(($multiline ? "\n" : ", "), map {
join(($multiline ? "\n" : ", "), @{$self->{nagios}->{messages}->{$ERRORS{$_}}})
} grep {
scalar(@{$self->{nagios}->{messages}->{$ERRORS{$_}}})
} ("CRITICAL", "WARNING", "UNKNOWN", "OK"));
my $bad_messages = join(($multiline ? "\n" : ", "), map {
join(($multiline ? "\n" : ", "), @{$self->{nagios}->{messages}->{$ERRORS{$_}}})
} grep {
scalar(@{$self->{nagios}->{messages}->{$ERRORS{$_}}})
} ("CRITICAL", "WARNING", "UNKNOWN"));
my $good_messages = join(($multiline ? "\n" : ", "), map {
join(($multiline ? "\n" : ", "), @{$self->{nagios}->{messages}->{$ERRORS{$_}}})
} grep {
scalar(@{$self->{nagios}->{messages}->{$ERRORS{$_}}})
} ("OK"));
my $all_messages_short = $bad_messages ? $bad_messages : 'no problems';
# if mode = my-....
# and there are some ok-messages
# output them instead of "no problems"
if ($self->{mode} =~ /^my\:\:/ && $good_messages) {
$all_messages_short = $bad_messages ? $bad_messages : $good_messages;
}
my $all_messages_html = "<table style=\"border-collapse: collapse;\">".
join("", map {
my $level = $_;
join("", map {
sprintf "<tr valign=\"top\"><td class=\"service%s\">%s</td></tr>",
$level, $_;
} @{$self->{nagios}->{messages}->{$ERRORS{$_}}});
} grep {
scalar(@{$self->{nagios}->{messages}->{$ERRORS{$_}}})
} ("CRITICAL", "WARNING", "UNKNOWN", "OK")).
"</table>";
if (exists $self->{identstring}) {
$self->{nagios_message} .= $self->{identstring};
}
if ($self->{report} eq "long") {
$self->{nagios_message} .= $all_messages;
} elsif ($self->{report} eq "short") {
$self->{nagios_message} .= $all_messages_short;
} elsif ($self->{report} eq "html") {
$self->{nagios_message} .= $all_messages_short."\n".$all_messages_html;
}
foreach my $from (keys %{$self->{negate}}) {
if ((uc $from) =~ /^(OK|WARNING|CRITICAL|UNKNOWN)$/ &&
(uc $self->{negate}->{$from}) =~ /^(OK|WARNING|CRITICAL|UNKNOWN)$/) {
if ($self->{nagios_level} == $ERRORS{uc $from}) {
$self->{nagios_level} = $ERRORS{uc $self->{negate}->{$from}};
}
}
}
if ($self->{labelformat} eq "pnp4nagios") {
$self->{perfdata} = join(" ", @{$self->{nagios}->{perfdata}});
} else {
$self->{perfdata} = join(" ", map {
my $perfdata = $_;
if ($perfdata =~ /^(.*?)=(.*)/) {
my $label = $1;
my $data = $2;
if (exists $labels->{$label} &&
exists $labels->{$label}->{$self->{labelformat}}) {
$labels->{$label}->{$self->{labelformat}}."=".$data;
} else {
$perfdata;
}
} else {
$perfdata;
}
} @{$self->{nagios}->{perfdata}});
}
}
sub set_global_db_thresholds {
my $self = shift;
my $params = shift;
my $warning = undef;
my $critical = undef;
return unless defined $params->{dbthresholds};
$params->{name0} = $params->{dbthresholds};
# :pluginmode :name :warning :critical
# mode empty
#
eval {
if ($self->{handle}->fetchrow_array(q{
SELECT table_name FROM information_schema.tables
WHERE table_schema = ?
AND table_name = 'CHECK_MYSQL_HEALTH_THRESHOLDS';
}, $self->{database})) { # either --database... or information_schema
my @dbthresholds = $self->{handle}->fetchall_array(q{
SELECT * FROM check_mysql_health_thresholds
});
$params->{dbthresholds} = \@dbthresholds;
foreach (@dbthresholds) {
if (($_->[0] eq $params->{cmdlinemode}) &&
(! defined $_->[1] || ! $_->[1])) {
($warning, $critical) = ($_->[2], $_->[3]);
}
}
}
};
if (! $@) {
if ($warning) {
$params->{warningrange} = $warning;
$self->trace("read warningthreshold %s from database", $warning);
}
if ($critical) {
$params->{criticalrange} = $critical;
$self->trace("read criticalthreshold %s from database", $critical);
}
}
}
sub set_local_db_thresholds {
my $self = shift;
my %params = @_;
my $warning = undef;
my $critical = undef;
# :pluginmode :name :warning :critical
# mode name0
# mode name2
# mode name
#
# first: argument of --dbthresholds, it it exists
# second: --name2
# third: --name
if (ref($params{dbthresholds}) eq 'ARRAY') {
my $marker;
foreach (@{$params{dbthresholds}}) {
if ($_->[0] eq $params{cmdlinemode}) {
if (defined $_->[1] && $params{name0} && $_->[1] eq $params{name0}) {
($warning, $critical) = ($_->[2], $_->[3]);
$marker = $params{name0};
last;
} elsif (defined $_->[1] && $params{name2} && $_->[1] eq $params{name2}) {
($warning, $critical) = ($_->[2], $_->[3]);
$marker = $params{name2};
last;
} elsif (defined $_->[1] && $params{name} && $_->[1] eq $params{name}) {
($warning, $critical) = ($_->[2], $_->[3]);
$marker = $params{name};
last;
}
}
}
if ($warning) {
$self->{warningrange} = $warning;
$self->trace("read warningthreshold %s for %s from database",
$marker, $warning);
}
if ($critical) {
$self->{criticalrange} = $critical;
$self->trace("read criticalthreshold %s for %s from database",
$marker, $critical);
}
}
}
sub debug {
my $self = shift;
my $msg = shift;
if ($DBD::MySQL::Server::verbose) {
printf "%s %s\n", $msg, ref($self);
}
}
sub dbconnect {
my $self = shift;
my %params = @_;
my $retval = undef;
$self->{tic} = Time::HiRes::time();
$self->{handle} = DBD::MySQL::Server::Connection->new(%params);
if ($self->{handle}->{errstr}) {
if ($params{mode} =~ /^server::tnsping/ &&
$self->{handle}->{errstr} =~ /ORA-01017/) {
$self->add_nagios($ERRORS{OK},
sprintf "connection established to %s.", $self->{connect});
$retval = undef;
} elsif ($self->{handle}->{errstr} eq "alarm\n") {
$self->add_nagios($ERRORS{CRITICAL},
sprintf "connection could not be established within %d seconds",
$self->{timeout});
} else {
$self->add_nagios($ERRORS{CRITICAL},
sprintf "cannot connect to %s. %s",
$self->{database}, $self->{handle}->{errstr});
$retval = undef;
}
} else {
$retval = $self->{handle};
}
$self->{tac} = Time::HiRes::time();
return $retval;
}
sub trace {
my $self = shift;
my $format = shift;
$self->{trace} = -f "/tmp/check_mysql_health.trace" ? 1 : 0;
if ($self->{verbose}) {
printf("%s: ", scalar localtime);
printf($format, @_);
}
if ($self->{trace}) {
my $logfh = new IO::File;
$logfh->autoflush(1);
if ($logfh->open("/tmp/check_mysql_health.trace", "a")) {
$logfh->printf("%s: ", scalar localtime);
$logfh->printf($format, @_);
$logfh->printf("\n");
$logfh->close();
}
}
}
sub DESTROY {
my $self = shift;
my $handle1 = "null";
my $handle2 = "null";
if (defined $self->{handle}) {
$handle1 = ref($self->{handle});
if (defined $self->{handle}->{handle}) {
$handle2 = ref($self->{handle}->{handle});
}
}
$self->trace(sprintf "DESTROY %s with handle %s %s", ref($self), $handle1, $handle2);
if (ref($self) eq "DBD::MySQL::Server") {
}
$self->trace(sprintf "DESTROY %s exit with handle %s %s", ref($self), $handle1, $handle2);
if (ref($self) eq "DBD::MySQL::Server") {
#printf "humpftata\n";
}
}
sub save_state {
my $self = shift;
my %params = @_;
my $extension = "";
my $mode = $params{mode};
if ($params{connect} && $params{connect} =~ /(\w+)\/(\w+)@(\w+)/) {
$params{connect} = $3;
} elsif ($params{connect}) {
# just to be sure
$params{connect} =~ s/\//_/g;
}
if ($^O =~ /MSWin/) {
$mode =~ s/::/_/g;
$params{statefilesdir} = $self->system_vartmpdir();
}
if (! -d $params{statefilesdir}) {
eval {
use File::Path;
mkpath $params{statefilesdir};
};
}
if ($@ || ! -w $params{statefilesdir}) {
$self->add_nagios($ERRORS{CRITICAL},
sprintf "statefilesdir %s does not exist or is not writable\n",
$params{statefilesdir});
return;
}
my $statefile = sprintf "%s_%s", $params{hostname}, $mode;
$extension .= $params{differenciator} ? "_".$params{differenciator} : "";
$extension .= $params{socket} ? "_".$params{socket} : "";
$extension .= $params{port} ? "_".$params{port} : "";
$extension .= $params{database} ? "_".$params{database} : "";
$extension .= $params{tablespace} ? "_".$params{tablespace} : "";
$extension .= $params{datafile} ? "_".$params{datafile} : "";
$extension .= $params{name} ? "_".$params{name} : "";
$extension =~ s/\//_/g;
$extension =~ s/\(/_/g;
$extension =~ s/\)/_/g;
$extension =~ s/\*/_/g;
$extension =~ s/\s/_/g;
$statefile .= $extension;
$statefile = lc $statefile;
$statefile = sprintf "%s/%s", $params{statefilesdir}, $statefile;
if (open(STATE, ">$statefile")) {
if ((ref($params{save}) eq "HASH") && exists $params{save}->{timestamp}) {
$params{save}->{localtime} = scalar localtime $params{save}->{timestamp};
}
printf STATE Data::Dumper::Dumper($params{save});
close STATE;
} else {
$self->add_nagios($ERRORS{CRITICAL},
sprintf "statefile %s is not writable", $statefile);
}
$self->debug(sprintf "saved %s to %s",
Data::Dumper::Dumper($params{save}), $statefile);
}
sub load_state {
my $self = shift;
my %params = @_;
my $extension = "";
my $mode = $params{mode};
if ($params{connect} && $params{connect} =~ /(\w+)\/(\w+)@(\w+)/) {
$params{connect} = $3;
} elsif ($params{connect}) {
# just to be sure
$params{connect} =~ s/\//_/g;
}
if ($^O =~ /MSWin/) {
$mode =~ s/::/_/g;
$params{statefilesdir} = $self->system_vartmpdir();
}
my $statefile = sprintf "%s_%s", $params{hostname}, $mode;
$extension .= $params{differenciator} ? "_".$params{differenciator} : "";
$extension .= $params{socket} ? "_".$params{socket} : "";
$extension .= $params{port} ? "_".$params{port} : "";
$extension .= $params{database} ? "_".$params{database} : "";
$extension .= $params{tablespace} ? "_".$params{tablespace} : "";
$extension .= $params{datafile} ? "_".$params{datafile} : "";
$extension .= $params{name} ? "_".$params{name} : "";
$extension =~ s/\//_/g;
$extension =~ s/\(/_/g;
$extension =~ s/\)/_/g;
$extension =~ s/\*/_/g;
$extension =~ s/\s/_/g;
$statefile .= $extension;
$statefile = lc $statefile;
$statefile = sprintf "%s/%s", $params{statefilesdir}, $statefile;
if ( -f $statefile) {
our $VAR1;
eval {
require $statefile;
};
if($@) {
$self->add_nagios($ERRORS{CRITICAL},
sprintf "statefile %s is corrupt", $statefile);
}
$self->debug(sprintf "load %s", Data::Dumper::Dumper($VAR1));
return $VAR1;
} else {
return undef;
}
}
sub valdiff {
my $self = shift;
my $pparams = shift;
my %params = %{$pparams};
my @keys = @_;
my $now = time;
my $last_values = $self->load_state(%params) || eval {
my $empty_events = {};
foreach (@keys) {
$empty_events->{$_} = 0;
}
$empty_events->{timestamp} = 0;
if ($params{lookback}) {
$empty_events->{lookback_history} = {};
}
$empty_events;
};
foreach (@keys) {
if ($params{lookback}) {
# find a last_value in the history which fits lookback best
# and overwrite $last_values->{$_} with historic data
if (exists $last_values->{lookback_history}->{$_}) {
foreach my $date (sort {$a <=> $b} keys %{$last_values->{lookback_history}->{$_}}) {
if ($date >= ($now - $params{lookback})) {
$last_values->{$_} = $last_values->{lookback_history}->{$_}->{$date};
$last_values->{timestamp} = $date;
last;
} else {
delete $last_values->{lookback_history}->{$_}->{$date};
}
}
}
}
$last_values->{$_} = 0 if ! exists $last_values->{$_};
if ($self->{$_} >= $last_values->{$_}) {
$self->{'delta_'.$_} = $self->{$_} - $last_values->{$_};
} else {
# vermutlich db restart und zaehler alle auf null
$self->{'delta_'.$_} = $self->{$_};
}
$self->debug(sprintf "delta_%s %f", $_, $self->{'delta_'.$_});
}
$self->{'delta_timestamp'} = $now - $last_values->{timestamp};
$params{save} = eval {
my $empty_events = {};
foreach (@keys) {
$empty_events->{$_} = $self->{$_};
}
$empty_events->{timestamp} = $now;
if ($params{lookback}) {
$empty_events->{lookback_history} = $last_values->{lookback_history};
foreach (@keys) {
$empty_events->{lookback_history}->{$_}->{$now} = $self->{$_};
}
}
$empty_events;
};
$self->save_state(%params);
}
sub requires_version {
my $self = shift;
my $version = shift;
my @instances = DBD::MySQL::Server::return_servers();
my $instversion = $instances[0]->{version};
if (! $self->version_is_minimum($version)) {
$self->add_nagios($ERRORS{UNKNOWN},
sprintf "not implemented/possible for MySQL release %s", $instversion);
}
}
sub version_is_minimum {
# the current version is newer or equal
my $self = shift;
my $version = shift;
my $newer = 1;
my @instances = DBD::MySQL::Server::return_servers();
my @v1 = map { $_ eq "x" ? 0 : $_ } split(/\./, $version);
my @v2 = split(/\./, $instances[0]->{version});
if (scalar(@v1) > scalar(@v2)) {
push(@v2, (0) x (scalar(@v1) - scalar(@v2)));
} elsif (scalar(@v2) > scalar(@v1)) {
push(@v1, (0) x (scalar(@v2) - scalar(@v1)));
}
foreach my $pos (0..$#v1) {
if ($v2[$pos] > $v1[$pos]) {
$newer = 1;
last;
} elsif ($v2[$pos] < $v1[$pos]) {
$newer = 0;
last;
}
}
#printf STDERR "check if %s os minimum %s\n", join(".", @v2), join(".", @v1);
return $newer;
}
sub instance_thread {
my $self = shift;
my @instances = DBD::MySQL::Server::return_servers();
return $instances[0]->{thread};
}
sub windows_server {
my $self = shift;
my @instances = DBD::MySQL::Server::return_servers();
if ($instances[0]->{os} =~ /Win/i) {
return 1;
} else {
return 0;
}
}
sub system_vartmpdir {
my $self = shift;
if ($^O =~ /MSWin/) {
return $self->system_tmpdir();
} else {
return "/var/tmp/check_mysql_health";
}
}
sub system_oldvartmpdir {
my $self = shift;
return "/tmp";
}
sub system_tmpdir {
my $self = shift;
if ($^O =~ /MSWin/) {
return $ENV{TEMP} if defined $ENV{TEMP};
return $ENV{TMP} if defined $ENV{TMP};
return File::Spec->catfile($ENV{windir}, 'Temp')
if defined $ENV{windir};
return 'C:\Temp';
} else {
return "/tmp";
}
}
sub decode_password {
my $self = shift;
my $password = shift;
if ($password && $password =~ /^rfc3986:\/\/(.*)/) {
$password = $1;
$password =~ s/\%([A-Fa-f0-9]{2})/pack('C', hex($1))/seg;
}
return $password;
}
package DBD::MySQL::Server::Connection;
use strict;
our @ISA = qw(DBD::MySQL::Server);
sub new {
my $class = shift;
my %params = @_;
my $self = {
mode => $params{mode},
timeout => $params{timeout},
access => $params{method} || "dbi",
hostname => $params{hostname},
database => $params{database} || "information_schema",
port => $params{port},
socket => $params{socket},
username => $params{username},
password => $params{password},
mycnf => $params{mycnf},
mycnfgroup => $params{mycnfgroup},
handle => undef,
};
bless $self, $class;
if ($params{method} eq "dbi") {
bless $self, "DBD::MySQL::Server::Connection::Dbi";
} elsif ($params{method} eq "mysql") {
bless $self, "DBD::MySQL::Server::Connection::Mysql";
} elsif ($params{method} eq "sqlrelay") {
bless $self, "DBD::MySQL::Server::Connection::Sqlrelay";
}
$self->init(%params);
return $self;
}
package DBD::MySQL::Server::Connection::Dbi;
use strict;
use Net::Ping;
our @ISA = qw(DBD::MySQL::Server::Connection);
sub init {
my $self = shift;
my %params = @_;
my $retval = undef;
if ($self->{mode} =~ /^server::tnsping/) {
if (! $self->{connect}) {
$self->{errstr} = "Please specify a database";
} else {
$self->{sid} = $self->{connect};
$self->{username} ||= time; # prefer an existing user
$self->{password} = time;
}
} else {
if (
($self->{hostname} ne 'localhost' && (! $self->{username} || ! $self->{password})) &&
(! $self->{mycnf}) ) {
$self->{errstr} = "Please specify hostname, username and password or a .cnf file";
return undef;
}
$self->{dsn} = "DBI:mysql:";
$self->{dsn} .= sprintf "database=%s", $self->{database};
if ($self->{mycnf}) {
$self->{dsn} .= sprintf ";mysql_read_default_file=%s", $self->{mycnf};
if ($self->{mycnfgroup}) {
$self->{dsn} .= sprintf ";mysql_read_default_group=%s", $self->{mycnfgroup};
}
} else {
$self->{dsn} .= sprintf ";host=%s", $self->{hostname};
$self->{dsn} .= sprintf ";port=%s", $self->{port}
unless $self->{socket} || $self->{hostname} eq 'localhost';
$self->{dsn} .= sprintf ";mysql_socket=%s", $self->{socket}
if $self->{socket};
}
}
if (! exists $self->{errstr}) {
eval {
require DBI;
use POSIX ':signal_h';
if ($^O =~ /MSWin/) {
local $SIG{'ALRM'} = sub {
die "alarm\n";
};
} else {
my $mask = POSIX::SigSet->new( SIGALRM );
my $action = POSIX::SigAction->new(
sub { die "alarm\n" ; }, $mask);
my $oldaction = POSIX::SigAction->new();
sigaction(SIGALRM ,$action ,$oldaction );
}
alarm($self->{timeout} - 1); # 1 second before the global unknown timeout
if ($self->{handle} = DBI->connect(
$self->{dsn},
$self->{username},
$self->decode_password($self->{password}),
{ RaiseError => 0, AutoCommit => 0, PrintError => 1 })) {
# $self->{handle}->do(q{
# ALTER SESSION SET NLS_NUMERIC_CHARACTERS=".," });
$retval = $self;
} else {
$self->{errstr} = DBI::errstr();
}
};
if ($@) {
$self->{errstr} = $@;
$retval = undef;
}
}
$self->{tac} = Time::HiRes::time();
return $retval;
}
sub selectrow_hashref {
my $self = shift;
my $sql = shift;
my @arguments = @_;
my $sth = undef;
my $hashref = undef;
eval {
$self->trace(sprintf "SQL:\n%s\nARGS:\n%s\n",
$sql, Data::Dumper::Dumper(\@arguments));
# helm auf! jetzt wirds dreckig.
if ($sql =~ /^\s*SHOW/) {
$hashref = $self->{handle}->selectrow_hashref($sql);
} else {
$sth = $self->{handle}->prepare($sql);
if (scalar(@arguments)) {
$sth->execute(@arguments);
} else {
$sth->execute();
}
$hashref = $sth->selectrow_hashref();
}
$self->trace(sprintf "RESULT:\n%s\n",
Data::Dumper::Dumper($hashref));
};
if ($@) {
$self->debug(sprintf "bumm %s", $@);
}
if (-f "/tmp/check_mysql_health_simulation/".$self->{mode}) {
my $simulation = do { local (@ARGV, $/) =
"/tmp/check_mysql_health_simulation/".$self->{mode}; <> };
# keine lust auf den scheiss
}
return $hashref;
}
sub fetchrow_array {
my $self = shift;
my $sql = shift;
my @arguments = @_;
my $sth = undef;
my @row = ();
my $stderrvar;
*SAVEERR = *STDERR;
open ERR ,'>',\$stderrvar;
*STDERR = *ERR;
eval {
$self->trace(sprintf "SQL:\n%s\nARGS:\n%s\n",
$sql, Data::Dumper::Dumper(\@arguments));
$sth = $self->{handle}->prepare($sql);
if (scalar(@arguments)) {
$sth->execute(@arguments);
} else {
$sth->execute();
}
@row = $sth->fetchrow_array();
$self->trace(sprintf "RESULT:\n%s\n",
Data::Dumper::Dumper(\@row));
};
*STDERR = *SAVEERR;
if ($@) {
$self->debug(sprintf "bumm %s", $@);
$self->{errstr} = $@;
return (undef);
} elsif ($stderrvar) {
$self->{errstr} = $stderrvar;
return (undef);
} elsif ($sth->errstr()) {
$self->{errstr} = $sth->errstr();
return (undef);
}
if (-f "/tmp/check_mysql_health_simulation/".$self->{mode}) {
my $simulation = do { local (@ARGV, $/) =
"/tmp/check_mysql_health_simulation/".$self->{mode}; <> };
@row = split(/\s+/, (split(/\n/, $simulation))[0]);
}
return $row[0] unless wantarray;
return @row;
}
sub fetchall_array {
my $self = shift;
my $sql = shift;
my @arguments = @_;
my $sth = undef;
my $rows = undef;
eval {
$self->trace(sprintf "SQL:\n%s\nARGS:\n%s\n",
$sql, Data::Dumper::Dumper(\@arguments));
$sth = $self->{handle}->prepare($sql);
if (scalar(@arguments)) {
$sth->execute(@arguments);
} else {
$sth->execute();
}
$rows = $sth->fetchall_arrayref();
$self->trace(sprintf "RESULT:\n%s\n",
Data::Dumper::Dumper($rows));
};
if ($@) {
printf STDERR "bumm %s\n", $@;
}
if (-f "/tmp/check_mysql_health_simulation/".$self->{mode}) {
my $simulation = do { local (@ARGV, $/) =
"/tmp/check_mysql_health_simulation/".$self->{mode}; <> };
@{$rows} = map { [ split(/\s+/, $_) ] } split(/\n/, $simulation);
}
return @{$rows};
}
sub func {
my $self = shift;
$self->{handle}->func(@_);
}
sub execute {
my $self = shift;
my $sql = shift;
eval {
my $sth = $self->{handle}->prepare($sql);
$sth->execute();
};
if ($@) {
printf STDERR "bumm %s\n", $@;
}
}
sub errstr {
my $self = shift;
return $self->{errstr};
}
sub DESTROY {
my $self = shift;
$self->trace(sprintf "disconnecting DBD %s",
$self->{handle} ? "with handle" : "without handle");
$self->{handle}->disconnect() if $self->{handle};
}
package DBD::MySQL::Server::Connection::Mysql;
use strict;
use File::Temp qw/tempfile/;
our @ISA = qw(DBD::MySQL::Server::Connection);
sub init {
my $self = shift;
my %params = @_;
my $retval = undef;
$self->{loginstring} = "traditional";
($self->{sql_commandfile_handle}, $self->{sql_commandfile}) =
tempfile($self->{mode}."XXXXX", SUFFIX => ".sql",
DIR => $self->system_tmpdir() );
close $self->{sql_commandfile_handle};
($self->{sql_resultfile_handle}, $self->{sql_resultfile}) =
tempfile($self->{mode}."XXXXX", SUFFIX => ".out",
DIR => $self->system_tmpdir() );
close $self->{sql_resultfile_handle};
if ($self->{mode} =~ /^server::tnsping/) {
if (! $self->{connect}) {
$self->{errstr} = "Please specify a database";
} else {
$self->{sid} = $self->{connect};
$self->{username} ||= time; # prefer an existing user
$self->{password} = time;
}
} else {
if (! $self->{username} || ! $self->{password}) {
$self->{errstr} = "Please specify database, username and password";
return undef;
} elsif (! (($self->{hostname} && $self->{port}) || $self->{socket})) {
$self->{errstr} = "Please specify hostname and port or socket";
return undef;
}
}
if (! exists $self->{errstr}) {
$self->{password} = $self->decode_password($self->{password});
eval {
my $mysql = '/'.'usr'.'/'.'bin'.'/'.'mysql';
if (! -x $mysql) {
die "nomysql\n";
}
if ($self->{loginstring} eq "traditional") {
$self->{sqlplus} = sprintf "%s ", $mysql;
$self->{sqlplus} .= sprintf "--batch --raw --skip-column-names ";
$self->{sqlplus} .= sprintf "--database=%s ", $self->{database};
$self->{sqlplus} .= sprintf "--host=%s ", $self->{hostname};
$self->{sqlplus} .= sprintf "--port=%s ", $self->{port}
unless $self->{socket} || $self->{hostname} eq "localhost";
$self->{sqlplus} .= sprintf "--socket=%s ", $self->{socket}
if $self->{socket};
$self->{sqlplus} .= sprintf "--user=%s --password='%s' < %s > %s",
$self->{username}, $self->{password},
$self->{sql_commandfile}, $self->{sql_resultfile};
}
use POSIX ':signal_h';
if ($^O =~ /MSWin/) {
local $SIG{'ALRM'} = sub {
die "alarm\n";
};
} else {
my $mask = POSIX::SigSet->new( SIGALRM );
my $action = POSIX::SigAction->new(
sub { die "alarm\n" ; }, $mask);
my $oldaction = POSIX::SigAction->new();
sigaction(SIGALRM ,$action ,$oldaction );
}
alarm($self->{timeout} - 1); # 1 second before the global unknown timeout
my $answer = $self->fetchrow_array(
q{ SELECT 42 FROM dual});
die unless defined $answer and $answer == 42;
$retval = $self;
};
if ($@) {
$self->{errstr} = $@;
$self->{errstr} =~ s/at $0 .*//g;
chomp $self->{errstr};
$retval = undef;
}
}
$self->{tac} = Time::HiRes::time();
return $retval;
}
sub selectrow_hashref {
my $self = shift;
my $sql = shift;
my @arguments = @_;
my $sth = undef;
my $hashref = undef;
foreach (@arguments) {
# replace the ? by the parameters
if (/^\d+$/) {
$sql =~ s/\?/$_/;
} else {
$sql =~ s/\?/'$_'/;
}
}
if ($sql =~ /^\s*SHOW/) {
$sql .= '\G'; # http://dev.mysql.com/doc/refman/5.1/de/show-slave-status.html
}
$self->trace(sprintf "SQL (? resolved):\n%s\nARGS:\n%s\n",
$sql, Data::Dumper::Dumper(\@arguments));
$self->create_commandfile($sql);
my $exit_output = `$self->{sqlplus}`;
if ($?) {
printf STDERR "fetchrow_array exit bumm \n";
my $output = do { local (@ARGV, $/) = $self->{sql_resultfile}; <> };
my @oerrs = map {
/((ERROR \d+).*)/ ? $1 : ();
} split(/\n/, $output);
$self->{errstr} = join(" ", @oerrs);
} else {
my $output = do { local (@ARGV, $/) = $self->{sql_resultfile}; <> };
if ($sql =~ /^\s*SHOW/) {
map {
if (/^\s*([\w_]+):\s*(.*)/) {
$hashref->{$1} = $2;
}
} split(/\n/, $output);
} else {
# i dont mess around here and you shouldn't either
}
$self->trace(sprintf "RESULT:\n%s\n",
Data::Dumper::Dumper($hashref));
}
unlink $self->{sql_commandfile};
unlink $self->{sql_resultfile};
return $hashref;
}
sub fetchrow_array {
my $self = shift;
my $sql = shift;
my @arguments = @_;
my $sth = undef;
my @row = ();
foreach (@arguments) {
# replace the ? by the parameters
if (/^\d+$/) {
$sql =~ s/\?/$_/;
} else {
$sql =~ s/\?/'$_'/;
}
}
$self->trace(sprintf "SQL (? resolved):\n%s\nARGS:\n%s\n",
$sql, Data::Dumper::Dumper(\@arguments));
$self->create_commandfile($sql);
my $exit_output = `$self->{sqlplus}`;
if ($?) {
printf STDERR "fetchrow_array exit bumm \n";
my $output = do { local (@ARGV, $/) = $self->{sql_resultfile}; <> };
my @oerrs = map {
/((ERROR \d+).*)/ ? $1 : ();
} split(/\n/, $output);
$self->{errstr} = join(" ", @oerrs);
} else {
my $output = do { local (@ARGV, $/) = $self->{sql_resultfile}; <> };
@row = map { convert($_) }
map { s/^\s+([\.\d]+)$/$1/g; $_ } # strip leading space from numbers
map { s/\s+$//g; $_ } # strip trailing space
split(/\t/, (split(/\n/, $output))[0]);
$self->trace(sprintf "RESULT:\n%s\n",
Data::Dumper::Dumper(\@row));
}
if ($@) {
$self->debug(sprintf "bumm %s", $@);
}
unlink $self->{sql_commandfile};
unlink $self->{sql_resultfile};
return $row[0] unless wantarray;
return @row;
}
sub fetchall_array {
my $self = shift;
my $sql = shift;
my @arguments = @_;
my $sth = undef;
my $rows = undef;
foreach (@arguments) {
# replace the ? by the parameters
if (/^\d+$/) {
$sql =~ s/\?/$_/;
} else {
$sql =~ s/\?/'$_'/;
}
}
$self->trace(sprintf "SQL (? resolved):\n%s\nARGS:\n%s\n",
$sql, Data::Dumper::Dumper(\@arguments));
$self->create_commandfile($sql);
my $exit_output = `$self->{sqlplus}`;
if ($?) {
printf STDERR "fetchrow_array exit bumm %s\n", $exit_output;
my $output = do { local (@ARGV, $/) = $self->{sql_resultfile}; <> };
my @oerrs = map {
/((ERROR \d+).*)/ ? $1 : ();
} split(/\n/, $output);
$self->{errstr} = join(" ", @oerrs);
} else {
my $output = do { local (@ARGV, $/) = $self->{sql_resultfile}; <> };
my @rows = map { [
map { convert($_) }
map { s/^\s+([\.\d]+)$/$1/g; $_ }
map { s/\s+$//g; $_ }
split /\t/
] } grep { ! /^\d+ rows selected/ }
grep { ! /^Elapsed: / }
grep { ! /^\s*$/ } split(/\n/, $output);
$rows = \@rows;
$self->trace(sprintf "RESULT:\n%s\n",
Data::Dumper::Dumper($rows));
}
if ($@) {
$self->debug(sprintf "bumm %s", $@);
}
unlink $self->{sql_commandfile};
unlink $self->{sql_resultfile};
return @{$rows};
}
sub func {
my $self = shift;
my $function = shift;
$self->{handle}->func(@_);
}
sub convert {
my $n = shift;
# mostly used to convert numbers in scientific notation
if ($n =~ /^\s*\d+\s*$/) {
return $n;
} elsif ($n =~ /^\s*([-+]?)(\d*[\.,]*\d*)[eE]{1}([-+]?)(\d+)\s*$/) {
my ($vor, $num, $sign, $exp) = ($1, $2, $3, $4);
$n =~ s/E/e/g;
$n =~ s/,/\./g;
$num =~ s/,/\./g;
my $sig = $sign eq '-' ? "." . ($exp - 1 + length $num) : '';
my $dec = sprintf "%${sig}f", $n;
$dec =~ s/\.[0]+$//g;
return $dec;
} elsif ($n =~ /^\s*([-+]?)(\d+)[\.,]*(\d*)\s*$/) {
return $1.$2.".".$3;
} elsif ($n =~ /^\s*(.*?)\s*$/) {
return $1;
} else {
return $n;
}
}
sub execute {
my $self = shift;
my $sql = shift;
eval {
my $sth = $self->{handle}->prepare($sql);
$sth->execute();
};
if ($@) {
printf STDERR "bumm %s\n", $@;
}
}
sub errstr {
my $self = shift;
return $self->{errstr};
}
sub DESTROY {
my $self = shift;
$self->trace("try to clean up command and result files");
unlink $self->{sql_commandfile} if -f $self->{sql_commandfile};
unlink $self->{sql_resultfile} if -f $self->{sql_resultfile};
}
sub create_commandfile {
my $self = shift;
my $sql = shift;
open CMDCMD, "> $self->{sql_commandfile}";
printf CMDCMD "%s\n", $sql;
close CMDCMD;
}
sub decode_password {
my $self = shift;
my $password = shift;
$password = $self->SUPER::decode_password($password);
# we call '...%s/%s@...' inside backticks where the second %s is the password
# abc'xcv -> ''abc'\''xcv''
# abc'`xcv -> ''abc'\''\`xcv''
if ($password && $password =~ /'/) {
$password = "'".join("\\'", map { "'".$_."'"; } split("'", $password))."'";
}
return $password;
}
package DBD::MySQL::Server::Connection::Sqlrelay;
use strict;
use Net::Ping;
our @ISA = qw(DBD::MySQL::Server::Connection);
sub init {
my $self = shift;
my %params = @_;
my $retval = undef;
if ($self->{mode} =~ /^server::tnsping/) {
if (! $self->{connect}) {
$self->{errstr} = "Please specify a database";
} else {
if ($self->{connect} =~ /([\.\w]+):(\d+)/) {
$self->{host} = $1;
$self->{port} = $2;
$self->{socket} = "";
} elsif ($self->{connect} =~ /([\.\w]+):([\w\/]+)/) {
$self->{host} = $1;
$self->{socket} = $2;
$self->{port} = "";
}
}
} else {
if (! $self->{hostname} || ! $self->{username} || ! $self->{password}) {
if ($self->{hostname} && $self->{hostname} =~ /(\w+?)\/(.+)@([\.\w]+):(\d+)/) {
$self->{username} = $1;
$self->{password} = $2;
$self->{hostname} = $3;
$self->{port} = $4;
$self->{socket} = "";
} elsif ($self->{hostname} && $self->{hostname} =~ /(\w+?)\/(.+)@([\.\w]+):([\w\/]+)/) {
$self->{username} = $1;
$self->{password} = $2;
$self->{hostname} = $3;
$self->{socket} = $4;
$self->{port} = "";
} else {
$self->{errstr} = "Please specify database, username and password";
return undef;
}
} else {
if ($self->{hostname} =~ /([\.\w]+):(\d+)/) {
$self->{hostname} = $1;
$self->{port} = $2;
$self->{socket} = "";
} elsif ($self->{hostname} =~ /([\.\w]+):([\w\/]+)/) {
$self->{hostname} = $1;
$self->{socket} = $2;
$self->{port} = "";
} else {
$self->{errstr} = "Please specify hostname, username, password and port/socket";
return undef;
}
}
}
if (! exists $self->{errstr}) {
eval {
require DBI;
use POSIX ':signal_h';
if ($^O =~ /MSWin/) {
local $SIG{'ALRM'} = sub {
die "alarm\n";
};
} else {
my $mask = POSIX::SigSet->new( SIGALRM );
my $action = POSIX::SigAction->new(
sub { die "alarm\n" ; }, $mask);
my $oldaction = POSIX::SigAction->new();
sigaction(SIGALRM ,$action ,$oldaction );
}
alarm($self->{timeout} - 1); # 1 second before the global unknown timeout
if ($self->{handle} = DBI->connect(
sprintf("DBI:SQLRelay:host=%s;port=%d;socket=%s",
$self->{hostname}, $self->{port}, $self->{socket}),
$self->{username},
$self->decode_password($self->{password}),
{ RaiseError => 1, AutoCommit => 0, PrintError => 1 })) {
$retval = $self;
if ($self->{mode} =~ /^server::tnsping/ && $self->{handle}->ping()) {
# database connected. fake a "unknown user"
$self->{errstr} = "ORA-01017";
}
} else {
$self->{errstr} = DBI::errstr();
}
};
if ($@) {
$self->{errstr} = $@;
$self->{errstr} =~ s/at [\w\/\.]+ line \d+.*//g;
$retval = undef;
}
}
$self->{tac} = Time::HiRes::time();
return $retval;
}
sub fetchrow_array {
my $self = shift;
my $sql = shift;
my @arguments = @_;
my $sth = undef;
my @row = ();
$self->trace(sprintf "fetchrow_array: %s", $sql);
eval {
$sth = $self->{handle}->prepare($sql);
if (scalar(@arguments)) {
$sth->execute(@arguments);
} else {
$sth->execute();
}
@row = $sth->fetchrow_array();
};
if ($@) {
$self->debug(sprintf "bumm %s", $@);
}
if (-f "/tmp/check_mysql_health_simulation/".$self->{mode}) {
my $simulation = do { local (@ARGV, $/) =
"/tmp/check_mysql_health_simulation/".$self->{mode}; <> };
@row = split(/\s+/, (split(/\n/, $simulation))[0]);
}
return $row[0] unless wantarray;
return @row;
}
sub fetchall_array {
my $self = shift;
my $sql = shift;
my @arguments = @_;
my $sth = undef;
my $rows = undef;
$self->trace(sprintf "fetchall_array: %s", $sql);
eval {
$sth = $self->{handle}->prepare($sql);
if (scalar(@arguments)) {
$sth->execute(@arguments);
} else {
$sth->execute();
}
$rows = $sth->fetchall_arrayref();
};
if ($@) {
printf STDERR "bumm %s\n", $@;
}
if (-f "/tmp/check_mysql_health_simulation/".$self->{mode}) {
my $simulation = do { local (@ARGV, $/) =
"/tmp/check_mysql_health_simulation/".$self->{mode}; <> };
@{$rows} = map { [ split(/\s+/, $_) ] } split(/\n/, $simulation);
}
return @{$rows};
}
sub func {
my $self = shift;
$self->{handle}->func(@_);
}
sub execute {
my $self = shift;
my $sql = shift;
eval {
my $sth = $self->{handle}->prepare($sql);
$sth->execute();
};
if ($@) {
printf STDERR "bumm %s\n", $@;
}
}
sub DESTROY {
my $self = shift;
#$self->trace(sprintf "disconnecting DBD %s",
# $self->{handle} ? "with handle" : "without handle");
#$self->{handle}->disconnect() if $self->{handle};
}
package DBD::MySQL::Cluster;
use strict;
use Time::HiRes;
use IO::File;
use Data::Dumper;
{
our $verbose = 0;
our $scream = 0; # scream if something is not implemented
our $access = "dbi"; # how do we access the database.
our $my_modules_dyn_dir = ""; # where we look for self-written extensions
my @clusters = ();
my $initerrors = undef;
sub add_cluster {
push(@clusters, shift);
}
sub return_clusters {
return @clusters;
}
sub return_first_cluster() {
return $clusters[0];
}
}
sub new {
my $class = shift;
my %params = @_;
my $self = {
hostname => $params{hostname},
port => $params{port},
username => $params{username},
password => $params{password},
timeout => $params{timeout},
warningrange => $params{warningrange},
criticalrange => $params{criticalrange},
version => 'unknown',
nodes => [],
ndbd_nodes => 0,
ndb_mgmd_nodes => 0,
mysqld_nodes => 0,
};
bless $self, $class;
$self->init_nagios();
if ($self->connect(%params)) {
DBD::MySQL::Cluster::add_cluster($self);
$self->init(%params);
}
return $self;
}
sub init {
my $self = shift;
my %params = @_;
if ($self->{show}) {
my $type = undef;
foreach (split /\n/, $self->{show}) {
if (/\[(\w+)\((\w+)\)\]\s+(\d+) node/) {
$type = uc $2;
} elsif (/id=(\d+)(.*)/) {
push(@{$self->{nodes}}, DBD::MySQL::Cluster::Node->new(
type => $type,
id => $1,
status => $2,
));
}
}
} else {
}
if ($params{mode} =~ /^cluster::ndbdrunning/) {
foreach my $node (@{$self->{nodes}}) {
$node->{type} eq "NDB" && $node->{status} eq "running" && $self->{ndbd_nodes}++;
$node->{type} eq "MGM" && $node->{status} eq "running" && $self->{ndb_mgmd_nodes}++;
$node->{type} eq "API" && $node->{status} eq "running" && $self->{mysqld_nodes}++;
}
} else {
printf "broken mode %s\n", $params{mode};
}
}
sub dump {
my $self = shift;
my $message = shift || "";
printf "%s %s\n", $message, Data::Dumper::Dumper($self);
}
sub nagios {
my $self = shift;
my %params = @_;
my $dead_ndb = 0;
my $dead_api = 0;
if (! $self->{nagios_level}) {
if ($params{mode} =~ /^cluster::ndbdrunning/) {
foreach my $node (grep { $_->{type} eq "NDB"} @{$self->{nodes}}) {
next if $params{selectname} && $params{selectname} ne $_->{id};
if (! $node->{connected}) {
$self->add_nagios_critical(
sprintf "ndb node %d is not connected", $node->{id});
$dead_ndb++;
}
}
foreach my $node (grep { $_->{type} eq "API"} @{$self->{nodes}}) {
next if $params{selectname} && $params{selectname} ne $_->{id};
if (! $node->{connected}) {
$self->add_nagios_critical(
sprintf "api node %d is not connected", $node->{id});
$dead_api++;
}
}
if (! $dead_ndb) {
$self->add_nagios_ok("all ndb nodes are connected");
}
if (! $dead_api) {
$self->add_nagios_ok("all api nodes are connected");
}
}
}
$self->add_perfdata(sprintf "ndbd_nodes=%d ndb_mgmd_nodes=%d mysqld_nodes=%d",
$self->{ndbd_nodes}, $self->{ndb_mgmd_nodes}, $self->{mysqld_nodes});
}
sub init_nagios {
my $self = shift;
no strict 'refs';
if (! ref($self)) {
my $nagiosvar = $self."::nagios";
my $nagioslevelvar = $self."::nagios_level";
$$nagiosvar = {
messages => {
0 => [],
1 => [],
2 => [],
3 => [],
},
perfdata => [],
};
$$nagioslevelvar = $ERRORS{OK},
} else {
$self->{nagios} = {
messages => {
0 => [],
1 => [],
2 => [],
3 => [],
},
perfdata => [],
};
$self->{nagios_level} = $ERRORS{OK},
}
}
sub check_thresholds {
my $self = shift;
my $value = shift;
my $defaultwarningrange = shift;
my $defaultcriticalrange = shift;
my $level = $ERRORS{OK};
$self->{warningrange} = $self->{warningrange} ?
$self->{warningrange} : $defaultwarningrange;
$self->{criticalrange} = $self->{criticalrange} ?
$self->{criticalrange} : $defaultcriticalrange;
if ($self->{warningrange} !~ /:/ && $self->{criticalrange} !~ /:/) {
# warning = 10, critical = 20, warn if > 10, crit if > 20
$level = $ERRORS{WARNING} if $value > $self->{warningrange};
$level = $ERRORS{CRITICAL} if $value > $self->{criticalrange};
} elsif ($self->{warningrange} =~ /([\d\.]+):/ &&
$self->{criticalrange} =~ /([\d\.]+):/) {
# warning = 98:, critical = 95:, warn if < 98, crit if < 95
$self->{warningrange} =~ /([\d\.]+):/;
$level = $ERRORS{WARNING} if $value < $1;
$self->{criticalrange} =~ /([\d\.]+):/;
$level = $ERRORS{CRITICAL} if $value < $1;
}
return $level;
#
# syntax error must be reported with returncode -1
#
}
sub add_nagios {
my $self = shift;
my $level = shift;
my $message = shift;
push(@{$self->{nagios}->{messages}->{$level}}, $message);
# recalc current level
foreach my $llevel (qw(CRITICAL WARNING UNKNOWN OK)) {
if (scalar(@{$self->{nagios}->{messages}->{$ERRORS{$llevel}}})) {
$self->{nagios_level} = $ERRORS{$llevel};
}
}
}
sub add_nagios_ok {
my $self = shift;
my $message = shift;
$self->add_nagios($ERRORS{OK}, $message);
}
sub add_nagios_warning {
my $self = shift;
my $message = shift;
$self->add_nagios($ERRORS{WARNING}, $message);
}
sub add_nagios_critical {
my $self = shift;
my $message = shift;
$self->add_nagios($ERRORS{CRITICAL}, $message);
}
sub add_nagios_unknown {
my $self = shift;
my $message = shift;
$self->add_nagios($ERRORS{UNKNOWN}, $message);
}
sub add_perfdata {
my $self = shift;
my $data = shift;
push(@{$self->{nagios}->{perfdata}}, $data);
}
sub merge_nagios {
my $self = shift;
my $child = shift;
foreach my $level (0..3) {
foreach (@{$child->{nagios}->{messages}->{$level}}) {
$self->add_nagios($level, $_);
}
#push(@{$self->{nagios}->{messages}->{$level}},
# @{$child->{nagios}->{messages}->{$level}});
}
push(@{$self->{nagios}->{perfdata}}, @{$child->{nagios}->{perfdata}});
}
sub calculate_result {
my $self = shift;
if ($ENV{NRPE_MULTILINESUPPORT} &&
length join(" ", @{$self->{nagios}->{perfdata}}) > 200) {
foreach my $level ("CRITICAL", "WARNING", "UNKNOWN", "OK") {
# first the bad news
if (scalar(@{$self->{nagios}->{messages}->{$ERRORS{$level}}})) {
$self->{nagios_message} .=
"\n".join("\n", @{$self->{nagios}->{messages}->{$ERRORS{$level}}});
}
}
$self->{nagios_message} =~ s/^\n//g;
$self->{perfdata} = join("\n", @{$self->{nagios}->{perfdata}});
} else {
foreach my $level ("CRITICAL", "WARNING", "UNKNOWN", "OK") {
# first the bad news
if (scalar(@{$self->{nagios}->{messages}->{$ERRORS{$level}}})) {
$self->{nagios_message} .=
join(", ", @{$self->{nagios}->{messages}->{$ERRORS{$level}}}).", ";
}
}
$self->{nagios_message} =~ s/, $//g;
$self->{perfdata} = join(" ", @{$self->{nagios}->{perfdata}});
}
foreach my $level ("OK", "UNKNOWN", "WARNING", "CRITICAL") {
if (scalar(@{$self->{nagios}->{messages}->{$ERRORS{$level}}})) {
$self->{nagios_level} = $ERRORS{$level};
}
}
}
sub debug {
my $self = shift;
my $msg = shift;
if ($DBD::MySQL::Cluster::verbose) {
printf "%s %s\n", $msg, ref($self);
}
}
sub connect {
my $self = shift;
my %params = @_;
my $retval = undef;
$self->{tic} = Time::HiRes::time();
eval {
use POSIX ':signal_h';
local $SIG{'ALRM'} = sub {
die "alarm\n";
};
my $mask = POSIX::SigSet->new( SIGALRM );
my $action = POSIX::SigAction->new(
sub { die "connection timeout\n" ; }, $mask);
my $oldaction = POSIX::SigAction->new();
sigaction(SIGALRM ,$action ,$oldaction );
alarm($self->{timeout} - 1); # 1 second before the global unknown timeout
my $ndb_mgm = "ndb_mgm";
$params{hostname} = "127.0.0.1" if ! $params{hostname};
$ndb_mgm .= sprintf " --ndb-connectstring=%s", $params{hostname}
if $params{hostname};
$ndb_mgm .= sprintf ":%d", $params{port}
if $params{port};
$self->{show} = `$ndb_mgm -e show 2>&1`;
if ($? == -1) {
$self->add_nagios_critical("ndb_mgm failed to execute $!");
} elsif ($? & 127) {
$self->add_nagios_critical("ndb_mgm failed to execute $!");
} elsif ($? >> 8 != 0) {
$self->add_nagios_critical("ndb_mgm unable to connect");
} else {
if ($self->{show} !~ /Cluster Configuration/) {
$self->add_nagios_critical("got no cluster configuration");
} else {
$retval = 1;
}
}
};
if ($@) {
$self->{errstr} = $@;
$self->{errstr} =~ s/at $0 .*//g;
chomp $self->{errstr};
$self->add_nagios_critical($self->{errstr});
$retval = undef;
}
$self->{tac} = Time::HiRes::time();
return $retval;
}
sub trace {
my $self = shift;
my $format = shift;
$self->{trace} = -f "/tmp/check_mysql_health.trace" ? 1 : 0;
if ($self->{verbose}) {
printf("%s: ", scalar localtime);
printf($format, @_);
}
if ($self->{trace}) {
my $logfh = new IO::File;
$logfh->autoflush(1);
if ($logfh->open("/tmp/check_mysql_health.trace", "a")) {
$logfh->printf("%s: ", scalar localtime);
$logfh->printf($format, @_);
$logfh->printf("\n");
$logfh->close();
}
}
}
sub DESTROY {
my $self = shift;
my $handle1 = "null";
my $handle2 = "null";
if (defined $self->{handle}) {
$handle1 = ref($self->{handle});
if (defined $self->{handle}->{handle}) {
$handle2 = ref($self->{handle}->{handle});
}
}
$self->trace(sprintf "DESTROY %s with handle %s %s", ref($self), $handle1, $handle2);
if (ref($self) eq "DBD::MySQL::Cluster") {
}
$self->trace(sprintf "DESTROY %s exit with handle %s %s", ref($self), $handle1, $handle2);
if (ref($self) eq "DBD::MySQL::Cluster") {
#printf "humpftata\n";
}
}
sub save_state {
my $self = shift;
my %params = @_;
my $extension = "";
mkdir $params{statefilesdir} unless -d $params{statefilesdir};
my $statefile = sprintf "%s/%s_%s",
$params{statefilesdir}, $params{hostname}, $params{mode};
$extension .= $params{differenciator} ? "_".$params{differenciator} : "";
$extension .= $params{socket} ? "_".$params{socket} : "";
$extension .= $params{port} ? "_".$params{port} : "";
$extension .= $params{database} ? "_".$params{database} : "";
$extension .= $params{tablespace} ? "_".$params{tablespace} : "";
$extension .= $params{datafile} ? "_".$params{datafile} : "";
$extension .= $params{name} ? "_".$params{name} : "";
$extension =~ s/\//_/g;
$extension =~ s/\(/_/g;
$extension =~ s/\)/_/g;
$extension =~ s/\*/_/g;
$extension =~ s/\s/_/g;
$statefile .= $extension;
$statefile = lc $statefile;
open(STATE, ">$statefile");
if ((ref($params{save}) eq "HASH") && exists $params{save}->{timestamp}) {
$params{save}->{localtime} = scalar localtime $params{save}->{timestamp};
}
printf STATE Data::Dumper::Dumper($params{save});
close STATE;
$self->debug(sprintf "saved %s to %s",
Data::Dumper::Dumper($params{save}), $statefile);
}
sub load_state {
my $self = shift;
my %params = @_;
my $extension = "";
my $statefile = sprintf "%s/%s_%s",
$params{statefilesdir}, $params{hostname}, $params{mode};
$extension .= $params{differenciator} ? "_".$params{differenciator} : "";
$extension .= $params{socket} ? "_".$params{socket} : "";
$extension .= $params{port} ? "_".$params{port} : "";
$extension .= $params{database} ? "_".$params{database} : "";
$extension .= $params{tablespace} ? "_".$params{tablespace} : "";
$extension .= $params{datafile} ? "_".$params{datafile} : "";
$extension .= $params{name} ? "_".$params{name} : "";
$extension =~ s/\//_/g;
$extension =~ s/\(/_/g;
$extension =~ s/\)/_/g;
$extension =~ s/\*/_/g;
$extension =~ s/\s/_/g;
$statefile .= $extension;
$statefile = lc $statefile;
if ( -f $statefile) {
our $VAR1;
eval {
require $statefile;
};
if($@) {
printf "rumms\n";
}
$self->debug(sprintf "load %s", Data::Dumper::Dumper($VAR1));
return $VAR1;
} else {
return undef;
}
}
sub valdiff {
my $self = shift;
my $pparams = shift;
my %params = %{$pparams};
my @keys = @_;
my $last_values = $self->load_state(%params) || eval {
my $empty_events = {};
foreach (@keys) {
$empty_events->{$_} = 0;
}
$empty_events->{timestamp} = 0;
$empty_events;
};
foreach (@keys) {
$self->{'delta_'.$_} = $self->{$_} - $last_values->{$_};
$self->debug(sprintf "delta_%s %f", $_, $self->{'delta_'.$_});
}
$self->{'delta_timestamp'} = time - $last_values->{timestamp};
$params{save} = eval {
my $empty_events = {};
foreach (@keys) {
$empty_events->{$_} = $self->{$_};
}
$empty_events->{timestamp} = time;
$empty_events;
};
$self->save_state(%params);
}
sub requires_version {
my $self = shift;
my $version = shift;
my @instances = DBD::MySQL::Cluster::return_clusters();
my $instversion = $instances[0]->{version};
if (! $self->version_is_minimum($version)) {
$self->add_nagios($ERRORS{UNKNOWN},
sprintf "not implemented/possible for MySQL release %s", $instversion);
}
}
sub version_is_minimum {
# the current version is newer or equal
my $self = shift;
my $version = shift;
my $newer = 1;
my @instances = DBD::MySQL::Cluster::return_clusters();
my @v1 = map { $_ eq "x" ? 0 : $_ } split(/\./, $version);
my @v2 = split(/\./, $instances[0]->{version});
if (scalar(@v1) > scalar(@v2)) {
push(@v2, (0) x (scalar(@v1) - scalar(@v2)));
} elsif (scalar(@v2) > scalar(@v1)) {
push(@v1, (0) x (scalar(@v2) - scalar(@v1)));
}
foreach my $pos (0..$#v1) {
if ($v2[$pos] > $v1[$pos]) {
$newer = 1;
last;
} elsif ($v2[$pos] < $v1[$pos]) {
$newer = 0;
last;
}
}
#printf STDERR "check if %s os minimum %s\n", join(".", @v2), join(".", @v1);
return $newer;
}
sub instance_rac {
my $self = shift;
my @instances = DBD::MySQL::Cluster::return_clusters();
return (lc $instances[0]->{parallel} eq "yes") ? 1 : 0;
}
sub instance_thread {
my $self = shift;
my @instances = DBD::MySQL::Cluster::return_clusters();
return $instances[0]->{thread};
}
sub windows_cluster {
my $self = shift;
my @instances = DBD::MySQL::Cluster::return_clusters();
if ($instances[0]->{os} =~ /Win/i) {
return 1;
} else {
return 0;
}
}
sub system_vartmpdir {
my $self = shift;
if ($^O =~ /MSWin/) {
return $self->system_tmpdir();
} else {
return "/var/tmp/check_mysql_health";
}
}
sub system_oldvartmpdir {
my $self = shift;
return "/tmp";
}
sub system_tmpdir {
my $self = shift;
if ($^O =~ /MSWin/) {
return $ENV{TEMP} if defined $ENV{TEMP};
return $ENV{TMP} if defined $ENV{TMP};
return File::Spec->catfile($ENV{windir}, 'Temp')
if defined $ENV{windir};
return 'C:\Temp';
} else {
return "/tmp";
}
}
package DBD::MySQL::Cluster::Node;
use strict;
our @ISA = qw(DBD::MySQL::Cluster);
sub new {
my $class = shift;
my %params = @_;
my $self = {
mode => $params{mode},
timeout => $params{timeout},
type => $params{type},
id => $params{id},
status => $params{status},
};
bless $self, $class;
$self->init(%params);
if ($params{type} eq "NDB") {
bless $self, "DBD::MySQL::Cluster::Node::NDB";
$self->init(%params);
}
return $self;
}
sub init {
my $self = shift;
my %params = @_;
if ($self->{status} =~ /@(\d+\.\d+\.\d+\.\d+)\s/) {
$self->{addr} = $1;
$self->{connected} = 1;
} elsif ($self->{status} =~ /accepting connect from (\d+\.\d+\.\d+\.\d+)/) {
$self->{addr} = $1;
$self->{connected} = 0;
}
if ($self->{status} =~ /starting,/) {
$self->{status} = "starting";
} elsif ($self->{status} =~ /shutting,/) {
$self->{status} = "shutting";
} else {
$self->{status} = $self->{connected} ? "running" : "dead";
}
}
package DBD::MySQL::Cluster::Node::NDB;
use strict;
our @ISA = qw(DBD::MySQL::Cluster::Node);
sub init {
my $self = shift;
my %params = @_;
if ($self->{status} =~ /Nodegroup:\s*(\d+)/) {
$self->{nodegroup} = $1;
}
$self->{master} = ($self->{status} =~ /Master\)/) ? 1 : 0;
}
package Extraopts;
use strict;
use File::Basename;
use Data::Dumper;
sub new {
my $class = shift;
my %params = @_;
my $self = {
file => $params{file},
commandline => $params{commandline},
config => {},
section => 'default_no_section',
};
bless $self, $class;
$self->prepare_file_and_section();
$self->init();
return $self;
}
sub prepare_file_and_section {
my $self = shift;
if (! defined $self->{file}) {
# ./check_stuff --extra-opts
$self->{section} = basename($0);
$self->{file} = $self->get_default_file();
} elsif ($self->{file} =~ /^[^@]+$/) {
# ./check_stuff --extra-opts=special_opts
$self->{section} = $self->{file};
$self->{file} = $self->get_default_file();
} elsif ($self->{file} =~ /^@(.*)/) {
# ./check_stuff --extra-opts=@/etc/myconfig.ini
$self->{section} = basename($0);
$self->{file} = $1;
} elsif ($self->{file} =~ /^(.*?)@(.*)/) {
# ./check_stuff --extra-opts=special_opts@/etc/myconfig.ini
$self->{section} = $1;
$self->{file} = $2;
}
}
sub get_default_file {
my $self = shift;
foreach my $default (qw(/etc/nagios/plugins.ini
/usr/local/nagios/etc/plugins.ini
/usr/local/etc/nagios/plugins.ini
/etc/opt/nagios/plugins.ini
/etc/nagios-plugins.ini
/usr/local/etc/nagios-plugins.ini
/etc/opt/nagios-plugins.ini)) {
if (-f $default) {
return $default;
}
}
return undef;
}
sub init {
my $self = shift;
if (! defined $self->{file}) {
$self->{errors} = sprintf 'no extra-opts file specified and no default file found';
} elsif (! -f $self->{file}) {
$self->{errors} = sprintf 'could not open %s', $self->{file};
} else {
my $data = do { local (@ARGV, $/) = $self->{file}; <> };
my $in_section = 'default_no_section';
foreach my $line (split(/\n/, $data)) {
if ($line =~ /\[(.*)\]/) {
$in_section = $1;
} elsif ($line =~ /(.*?)\s*=\s*(.*)/) {
$self->{config}->{$in_section}->{$1} = $2;
}
}
}
}
sub is_valid {
my $self = shift;
return ! exists $self->{errors};
}
sub overwrite {
my $self = shift;
my %commandline = ();
if (scalar(keys %{$self->{config}->{default_no_section}}) > 0) {
foreach (keys %{$self->{config}->{default_no_section}}) {
$commandline{$_} = $self->{config}->{default_no_section}->{$_};
}
}
if (exists $self->{config}->{$self->{section}}) {
foreach (keys %{$self->{config}->{$self->{section}}}) {
$commandline{$_} = $self->{config}->{$self->{section}}->{$_};
}
}
foreach (keys %commandline) {
if (! exists $self->{commandline}->{$_}) {
$self->{commandline}->{$_} = $commandline{$_};
}
}
}
package main;
use strict;
use Getopt::Long qw(:config no_ignore_case);
use File::Basename;
use lib dirname($0);
use vars qw ($PROGNAME $REVISION $CONTACT $TIMEOUT $STATEFILESDIR $needs_restart %commandline);
$PROGNAME = "check_mysql_health";
$REVISION = '$Revision: 2.2.2 $';
$CONTACT = '[email protected]';
$TIMEOUT = 60;
$STATEFILESDIR = '/var/tmp/check_mysql_health';
$needs_restart = 0;
my @modes = (
['server::connectiontime',
'connection-time', undef,
'Time to connect to the server' ],
['server::uptime',
'uptime', undef,
'Time the server is running' ],
['server::instance::connectedthreads',
'threads-connected', undef,
'Number of currently open connections' ],
['server::instance::threadcachehitrate',
'threadcache-hitrate', undef,
'Hit rate of the thread-cache' ],
['server::instance::createdthreads',
'threads-created', undef,
'Number of threads created per sec' ],
['server::instance::runningthreads',
'threads-running', undef,
'Number of currently running threads' ],
['server::instance::cachedthreads',
'threads-cached', undef,
'Number of currently cached threads' ],
['server::instance::abortedconnects',
'connects-aborted', undef,
'Number of aborted connections per sec' ],
['server::instance::abortedclients',
'clients-aborted', undef,
'Number of aborted connections (because the client died) per sec' ],
['server::instance::replication::slavelag',
'slave-lag', ['replication-slave-lag'],
'Seconds behind master' ],
['server::instance::replication::slaveiorunning',
'slave-io-running', ['replication-slave-io-running'],
'Slave io running: Yes' ],
['server::instance::replication::slavesqlrunning',
'slave-sql-running', ['replication-slave-sql-running'],
'Slave sql running: Yes' ],
['server::instance::querycachehitrate',
'qcache-hitrate', ['querycache-hitrate'],
'Query cache hitrate' ],
['server::instance::querycachelowmemprunes',
'qcache-lowmem-prunes', ['querycache-lowmem-prunes'],
'Query cache entries pruned because of low memory' ],
['server::instance::myisam::keycache::hitrate',
'keycache-hitrate', ['myisam-keycache-hitrate'],
'MyISAM key cache hitrate' ],
['server::instance::innodb::bufferpool::hitrate',
'bufferpool-hitrate', ['innodb-bufferpool-hitrate'],
'InnoDB buffer pool hitrate' ],
['server::instance::innodb::bufferpool::waitfree',
'bufferpool-wait-free', ['innodb-bufferpool-wait-free'],
'InnoDB buffer pool waits for clean page available' ],
['server::instance::innodb::logwaits',
'log-waits', ['innodb-log-waits'],
'InnoDB log waits because of a too small log buffer' ],
['server::instance::tablecachehitrate',
'tablecache-hitrate', undef,
'Table cache hitrate' ],
['server::instance::tablelockcontention',
'table-lock-contention', undef,
'Table lock contention' ],
['server::instance::tableindexusage',
'index-usage', undef,
'Usage of indices' ],
['server::instance::tabletmpondisk',
'tmp-disk-tables', undef,
'Percent of temp tables created on disk' ],
['server::instance::needoptimize',
'table-fragmentation', undef,
'Show tables which should be optimized' ],
['server::instance::openfiles',
'open-files', undef,
'Percent of opened files' ],
['server::instance::slowqueries',
'slow-queries', undef,
'Slow queries' ],
['server::instance::longprocs',
'long-running-procs', undef,
'long running processes' ],
['cluster::ndbdrunning',
'cluster-ndbd-running', undef,
'ndnd nodes are up and running' ],
['server::sql',
'sql', undef,
'any sql command returning a single number' ],
);
# rrd data store names are limited to 19 characters
my %labels = (
bufferpool_hitrate => {
groundwork => 'bp_hitrate',
},
bufferpool_hitrate_now => {
groundwork => 'bp_hitrate_now',
},
bufferpool_free_waits_rate => {
groundwork => 'bp_freewaits',
},
innodb_log_waits_rate => {
groundwork => 'inno_log_waits',
},
keycache_hitrate => {
groundwork => 'kc_hitrate',
},
keycache_hitrate_now => {
groundwork => 'kc_hitrate_now',
},
threads_created_per_sec => {
groundwork => 'thrds_creat_per_s',
},
connects_aborted_per_sec => {
groundwork => 'conn_abrt_per_s',
},
clients_aborted_per_sec => {
groundwork => 'clnt_abrt_per_s',
},
thread_cache_hitrate => {
groundwork => 'tc_hitrate',
},
thread_cache_hitrate_now => {
groundwork => 'tc_hitrate_now',
},
qcache_lowmem_prunes_rate => {
groundwork => 'qc_lowm_prnsrate',
},
slow_queries_rate => {
groundwork => 'slow_q_rate',
},
tablecache_hitrate => {
groundwork => 'tac_hitrate',
},
tablecache_fillrate => {
groundwork => 'tac_fillrate',
},
tablelock_contention => {
groundwork => 'tl_contention',
},
tablelock_contention_now => {
groundwork => 'tl_contention_now',
},
pct_tmp_table_on_disk => {
groundwork => 'tmptab_on_disk',
},
pct_tmp_table_on_disk_now => {
groundwork => 'tmptab_on_disk_now',
},
);
sub print_usage () {
print <<EOUS;
Usage:
$PROGNAME [-v] [-t <timeout>] [[--hostname <hostname>]
[--port <port> | --socket <socket>]
--username <username> --password <password>] --mode <mode>
[--method mysql]
$PROGNAME [-h | --help]
$PROGNAME [-V | --version]
Options:
--hostname
the database server's hostname
--port
the database's port. (default: 3306)
--socket
the database's unix socket.
--username
the mysql db user
--password
the mysql db user's password
--database
the database's name. (default: information_schema)
--replication-user
the database's replication user name (default: replication)
--warning
the warning range
--critical
the critical range
--mode
the mode of the plugin. select one of the following keywords:
EOUS
my $longest = length ((reverse sort {length $a <=> length $b} map { $_->[1] } @modes)[0]);
my $format = " %-".
(length ((reverse sort {length $a <=> length $b} map { $_->[1] } @modes)[0])).
"s\t(%s)\n";
foreach (@modes) {
printf $format, $_->[1], $_->[3];
}
printf "\n";
print <<EOUS;
--name
the name of something that needs to be further specified,
currently only used for sql statements
--name2
if name is a sql statement, this statement would appear in
the output and the performance data. This can be ugly, so
name2 can be used to appear instead.
--regexp
if this parameter is used, name will be interpreted as a
regular expression.
--units
one of %, KB, MB, GB. This is used for a better output of mode=sql
and for specifying thresholds for mode=tablespace-free
--labelformat
one of pnp4nagios (which is the default) or groundwork.
It is used to shorten performance data labels to 19 characters.
In mode sql you can url-encode the statement so you will not have to mess
around with special characters in your Nagios service definitions.
Instead of
--name="select count(*) from v\$session where status = 'ACTIVE'"
you can say
--name=select%20count%28%2A%29%20from%20v%24session%20where%20status%20%3D%20%27ACTIVE%27
For your convenience you can call check_mysql_health with the --mode encode
option and it will encode the standard input.
You can find the full documentation at
https://labs.consol.de/nagios/check_mysql_health/
EOUS
}
sub print_help () {
print "Copyright (c) 2009 Gerhard Lausser\n\n";
print "\n";
print " Check various parameters of MySQL databases \n";
print "\n";
print_usage();
support();
}
sub print_revision ($$) {
my $commandName = shift;
my $pluginRevision = shift;
$pluginRevision =~ s/^\$Revision: //;
$pluginRevision =~ s/ \$\s*$//;
print "$commandName ($pluginRevision)\n";
print "This nagios plugin comes with ABSOLUTELY NO WARRANTY. You may redistribute\ncopies of this plugin under the terms of the GNU General Public License.\n";
}
sub support () {
my $support='Send email to [email protected] if you have questions\nregarding use of this software. \nPlease include version information with all correspondence (when possible,\nuse output from the --version option of the plugin itself).\n';
$support =~ s/@/\@/g;
$support =~ s/\\n/\n/g;
print $support;
}
sub contact_author ($$) {
my $item = shift;
my $strangepattern = shift;
if ($commandline{verbose}) {
printf STDERR
"++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n".
"You found a line which is not recognized by %s\n".
"This means, certain components of your system cannot be checked.\n".
"Please contact the author %s and\nsend him the following output:\n\n".
"%s /%s/\n\nThank you!\n".
"++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n",
$PROGNAME, $CONTACT, $item, $strangepattern;
}
}
%commandline = ();
my @params = (
"timeout|t=i",
"version|V",
"help|h",
"verbose|v",
"debug|d",
"hostname|H=s",
"database=s",
"port|P=s",
"socket|S=s",
"username|u=s",
"password|p=s",
"replication-user=s",
"mycnf=s",
"mycnfgroup=s",
"mode|m=s",
"name=s",
"name2=s",
"regexp",
"perfdata",
"warning=s",
"critical=s",
"dbthresholds:s",
"absolute|a",
"environment|e=s%",
"negate=s%",
"method=s",
"runas|r=s",
"scream",
"shell",
"eyecandy",
"encode",
"units=s",
"lookback=i",
"3",
"statefilesdir=s",
"with-mymodules-dyn-dir=s",
"report=s",
"labelformat=s",
"extra-opts:s");
if (! GetOptions(\%commandline, @params)) {
print_help();
exit $ERRORS{UNKNOWN};
}
if (exists $commandline{'extra-opts'}) {
# read the extra file and overwrite other parameters
my $extras = Extraopts->new(file => $commandline{'extra-opts'}, commandline =>
\%commandline);
if (! $extras->is_valid()) {
printf "extra-opts are not valid: %s\n", $extras->{errors};
exit $ERRORS{UNKNOWN};
} else {
$extras->overwrite();
}
}
if (exists $commandline{version}) {
print_revision($PROGNAME, $REVISION);
exit $ERRORS{OK};
}
if (exists $commandline{help}) {
print_help();
exit $ERRORS{OK};
} elsif (! exists $commandline{mode}) {
printf "Please select a mode\n";
print_help();
exit $ERRORS{OK};
}
if ($commandline{mode} eq "encode") {
my $input = <>;
chomp $input;
$input =~ s/([^A-Za-z0-9])/sprintf("%%%02X", ord($1))/seg;
printf "%s\n", $input;
exit $ERRORS{OK};
}
if (exists $commandline{3}) {
$ENV{NRPE_MULTILINESUPPORT} = 1;
}
if (exists $commandline{timeout}) {
$TIMEOUT = $commandline{timeout};
}
if (exists $commandline{verbose}) {
$DBD::MySQL::Server::verbose = exists $commandline{verbose};
}
if (exists $commandline{scream}) {
# $DBD::MySQL::Server::hysterical = exists $commandline{scream};
}
if (exists $commandline{method}) {
# snmp or mysql cmdline
} else {
$commandline{method} = "dbi";
}
if (exists $commandline{report}) {
# short, long, html
} else {
$commandline{report} = "long";
}
if (exists $commandline{labelformat}) {
# groundwork
} else {
$commandline{labelformat} = "pnp4nagios";
}
if (exists $commandline{'with-mymodules-dyn-dir'}) {
$DBD::MySQL::Server::my_modules_dyn_dir = $commandline{'with-mymodules-dyn-dir'};
} else {
$DBD::MySQL::Server::my_modules_dyn_dir = '/usr/local/nagios/libexec';
}
if (exists $commandline{environment}) {
# if the desired environment variable values are different from
# the environment of this running script, then a restart is necessary.
# because setting $ENV does _not_ change the environment of the running script.
foreach (keys %{$commandline{environment}}) {
if ((! $ENV{$_}) || ($ENV{$_} ne $commandline{environment}->{$_})) {
$needs_restart = 1;
$ENV{$_} = $commandline{environment}->{$_};
printf STDERR "new %s=%s forces restart\n", $_, $ENV{$_}
if $DBD::MySQL::Server::verbose;
}
}
# e.g. called with --runas dbnagio. shlib_path environment variable is stripped
# during the sudo.
# so the perl interpreter starts without a shlib_path. but --runas cares for
# a --environment shlib_path=...
# so setting the environment variable in the code above and restarting the
# perl interpreter will help it find shared libs
}
if (exists $commandline{runas}) {
# remove the runas parameter
# exec sudo $0 ... the remaining parameters
$needs_restart = 1;
# if the calling script has a path for shared libs and there is no --environment
# parameter then the called script surely needs the variable too.
foreach my $important_env (qw(LD_LIBRARY_PATH SHLIB_PATH
ORACLE_HOME TNS_ADMIN ORA_NLS ORA_NLS33 ORA_NLS10)) {
if ($ENV{$important_env} && ! scalar(grep { /^$important_env=/ }
keys %{$commandline{environment}})) {
$commandline{environment}->{$important_env} = $ENV{$important_env};
printf STDERR "add important --environment %s=%s\n",
$important_env, $ENV{$important_env} if $DBD::MySQL::Server::verbose;
}
}
}
if ($needs_restart) {
my @newargv = ();
my $runas = undef;
if (exists $commandline{runas}) {
$runas = $commandline{runas};
delete $commandline{runas};
}
foreach my $option (keys %commandline) {
if (grep { /^$option/ && /=/ } @params) {
if (ref ($commandline{$option}) eq "HASH") {
foreach (keys %{$commandline{$option}}) {
push(@newargv, sprintf "--%s", $option);
push(@newargv, sprintf "%s=%s", $_, $commandline{$option}->{$_});
}
} else {
push(@newargv, sprintf "--%s", $option);
push(@newargv, sprintf "%s", $commandline{$option});
}
} else {
push(@newargv, sprintf "--%s", $option);
}
}
if ($runas) {
exec "sudo", "-S", "-u", $runas, $0, @newargv;
} else {
exec $0, @newargv;
# this makes sure that even a SHLIB or LD_LIBRARY_PATH are set correctly
# when the perl interpreter starts. Setting them during runtime does not
# help loading e.g. libclntsh.so
}
exit;
}
if (exists $commandline{shell}) {
# forget what you see here.
system("/bin/sh");
}
if (! exists $commandline{statefilesdir}) {
if (exists $ENV{OMD_ROOT}) {
$commandline{statefilesdir} = $ENV{OMD_ROOT}."/var/tmp/check_mysql_health";
} else {
$commandline{statefilesdir} = $STATEFILESDIR;
}
}
if (exists $commandline{name}) {
if ($^O =~ /MSWin/ && $commandline{name} =~ /^'(.*)'$/) {
# putting arguments in single ticks under Windows CMD leaves the ' intact
# we remove them
$commandline{name} = $1;
}
# objects can be encoded like an url
# with s/([^A-Za-z0-9])/sprintf("%%%02X", ord($1))/seg;
if (($commandline{mode} ne "sql") ||
(($commandline{mode} eq "sql") &&
($commandline{name} =~ /select%20/i))) { # protect ... like '%cac%' ... from decoding
$commandline{name} =~ s/\%([A-Fa-f0-9]{2})/pack('C', hex($1))/seg;
}
if ($commandline{name} =~ /^0$/) {
# without this, $params{selectname} would be treated like undef
$commandline{name} = "00";
}
}
$SIG{'ALRM'} = sub {
printf "UNKNOWN - %s timed out after %d seconds\n", $PROGNAME, $TIMEOUT;
exit $ERRORS{UNKNOWN};
};
alarm($TIMEOUT);
my $nagios_level = $ERRORS{UNKNOWN};
my $nagios_message = "";
my $perfdata = "";
if ($commandline{mode} =~ /^my-([^\-.]+)/) {
my $param = $commandline{mode};
$param =~ s/\-/::/g;
push(@modes, [$param, $commandline{mode}, undef, 'my extension']);
} elsif ((! grep { $commandline{mode} eq $_ } map { $_->[1] } @modes) &&
(! grep { $commandline{mode} eq $_ } map { defined $_->[2] ? @{$_->[2]} : () } @modes)) {
printf "UNKNOWN - mode %s\n", $commandline{mode};
print_usage();
exit 3;
}
my %params = (
timeout => $TIMEOUT,
mode => (
map { $_->[0] }
grep {
($commandline{mode} eq $_->[1]) ||
( defined $_->[2] && grep { $commandline{mode} eq $_ } @{$_->[2]})
} @modes
)[0],
cmdlinemode => $commandline{mode},
method => $commandline{method} ||
$ENV{NAGIOS__SERVICEMYSQL_METH} ||
$ENV{NAGIOS__HOSTMYSQL_METH} || 'dbi',
hostname => $commandline{hostname} ||
$ENV{NAGIOS__SERVICEMYSQL_HOST} ||
$ENV{NAGIOS__HOSTMYSQL_HOST} || 'localhost',
database => $commandline{database} ||
$ENV{NAGIOS__SERVICEMYSQL_DATABASE} ||
$ENV{NAGIOS__HOSTMYSQL_DATABASE} || 'information_schema',
port => $commandline{port} || (($commandline{mode} =~ /^cluster/) ?
($ENV{NAGIOS__SERVICENDBMGM_PORT} || $ENV{NAGIOS__HOSTNDBMGM_PORT} || 1186) :
($ENV{NAGIOS__SERVICEMYSQL_PORT} || $ENV{NAGIOS__HOSTMYSQL_PORT} || 3306)),
socket => $commandline{socket} ||
$ENV{NAGIOS__SERVICEMYSQL_SOCKET} ||
$ENV{NAGIOS__HOSTMYSQL_SOCKET},
username => $commandline{username} ||
$ENV{NAGIOS__SERVICEMYSQL_USER} ||
$ENV{NAGIOS__HOSTMYSQL_USER},
password => $commandline{password} ||
$ENV{NAGIOS__SERVICEMYSQL_PASS} ||
$ENV{NAGIOS__HOSTMYSQL_PASS},
replication_user => $commandline{'replication-user'} || 'replication',
mycnf => $commandline{mycnf} ||
$ENV{NAGIOS__SERVICEMYSQL_MYCNF} ||
$ENV{NAGIOS__HOSTMYSQL_MYCNF},
mycnfgroup => $commandline{mycnfgroup} ||
$ENV{NAGIOS__SERVICEMYSQL_MYCNFGROUP} ||
$ENV{NAGIOS__HOSTMYSQL_MYCNFGROUP},
warningrange => $commandline{warning},
criticalrange => $commandline{critical},
dbthresholds => $commandline{dbthresholds},
absolute => $commandline{absolute},
lookback => $commandline{lookback},
selectname => $commandline{name} || $commandline{tablespace} || $commandline{datafile},
regexp => $commandline{regexp},
name => $commandline{name},
name2 => $commandline{name2} || $commandline{name},
units => $commandline{units},
lookback => $commandline{lookback} || 0,
eyecandy => $commandline{eyecandy},
statefilesdir => $commandline{statefilesdir},
verbose => $commandline{verbose},
report => $commandline{report},
labelformat => $commandline{labelformat},
negate => $commandline{negate},
);
my $server = undef;
my $cluster = undef;
if ($params{mode} =~ /^(server|my)/) {
$server = DBD::MySQL::Server->new(%params);
$server->nagios(%params);
$server->calculate_result(\%labels);
$nagios_message = $server->{nagios_message};
$nagios_level = $server->{nagios_level};
$perfdata = $server->{perfdata};
} elsif ($params{mode} =~ /^cluster/) {
$cluster = DBD::MySQL::Cluster->new(%params);
$cluster->nagios(%params);
$cluster->calculate_result(\%labels);
$nagios_message = $cluster->{nagios_message};
$nagios_level = $cluster->{nagios_level};
$perfdata = $cluster->{perfdata};
}
printf "%s - %s", $ERRORCODES{$nagios_level}, $nagios_message;
printf " | %s", $perfdata if $perfdata;
printf "\n";
exit $nagios_level;
__END__
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