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package DBD::MySQL::Server::Instance::Innodb;
use strict;
our @ISA = qw(DBD::MySQL::Server::Instance);
my %ERRORS=( OK => 0, WARNING => 1, CRITICAL => 2, UNKNOWN => 3 );
my %ERRORCODES=( 0 => 'OK', 1 => 'WARNING', 2 => 'CRITICAL', 3 => 'UNKNOWN' );
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});
}
}
}
1;
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