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#!/usr/bin/perl -w |
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use strict; |
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use DBI; |
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|
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my $dbhost = $ENV{'dbhost'}; |
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my $dbname = $ENV{'dbname'} || 'template1'; |
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my $dbuser = $ENV{'dbuser'} || 'postgres'; |
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my $dbpass = $ENV{'dbpass'} || ''; |
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|
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if ($ARGV[0] && $ARGV[0] eq "config") { |
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print <<EOF; |
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graph_title Postgres locks |
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graph_args -l 0 --base 1000 |
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graph_vlabel Locks |
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graph_category Postgresql |
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graph_info Shows Postgresql locks |
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locks.label Locks |
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locks.info Locks (more info here, please... :) |
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locks.type GAUGE |
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locks.warning 5 |
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locks.critical 10 |
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exlocks.label Exclusive locks |
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exlocks.info Exclusive locks (here too, please... :) |
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exlocks.type GAUGE |
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exlocks.warning 5 |
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exlocks.critical 10 |
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EOF |
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} else { |
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my $Con = "DBI:Pg:dbname=$dbname", $dbhost ? ";host=$dbhost" : ""; |
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my $Dbh = DBI->connect ($Con, |
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$dbuser, |
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$dbpass, |
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{RaiseError =>1}) || die "Unable to access Database $dbname on host $dbhost as user $dbuser.\nError returned was: ". $DBI::errstr; |
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|
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my $sql="SELECT mode,COUNT(mode) FROM pg_locks GROUP BY mode ORDER BY mode;"; |
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my $sth = $Dbh->prepare ($sql); |
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$sth->execute (); |
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my $locks = 0; |
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my $exlocks = 0; |
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while (my ($mode, $count) = $sth->fetchrow ()) { |
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if ($mode =~ /exclusive/i) { |
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$exlocks = $exlocks + $count; |
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} |
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$locks = $locks+$count; |
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} |
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print "locks.value $locks\n"; |
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print "exlocks.value $exlocks\n"; |
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} |