Merge pull request #449 from steveschnepp/postgres_tuplesratio

p/postgres_tuplesratio: ratio of live/dead tuples

plugins/postgresql/postgres_tuplesratio_

@@ -0,0 +1,79 @@
+#!/usr/bin/perl
+# -*- cperl -*-
+#
+# Copyright (C) 2013 Gilles Fauvie, OPENDBTEAM.com (INTEGER S.P.R.L)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; version 2 dated June,
+# 1991.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301 USA.
+
+=head1 NAME
+
+postgres_tuplesratio_ - Plugin to monitor PostgreSQL live/dead tuples ratio.
+
+=head1 CONFIGURATION
+
+Configuration is done through libpq environment variables, for example
+PGUSER, PGDATABASE, etc. For more information, see L<Munin::Plugin::Pgsql>.
+
+To monitor a specific database, link to postgres_tuplesratio_<databasename>.
+To monitor all databases, link to postgres_tuplesratio_ALL.
+
+=head1 SEE ALSO
+
+L<Munin::Plugin::Pgsql>
+
+=head1 MAGIC MARKERS
+
+ #%# family=auto
+ #%# capabilities=autoconf suggest
+
+=head1 AUTHOR
+
+Gilles Fauvie <gfauvie@opendbteam.com>, OPENDBTEAM.com (INTEGER S.P.R.L)
+
+=head1 COPYRIGHT/License.
+
+Copyright (c) 2013 Gilles Fauvie, OPENDBTEAM.com (INTEGER S.P.R.L)
+
+All rights reserved. This program is free software; you can
+redistribute it and/or modify it under the terms of the GNU General
+Public License as published by the Free Software Foundation; version 2
+dated June, 1991.
+
+=cut
+
+use warnings;
+use strict;
+
+use Munin::Plugin::Pgsql;
+
+my $pg = Munin::Plugin::Pgsql->new(
+    basename => 'postgres_tuplesratio_',
+    title    => 'PostgreSQL tuples ratio',
+    info     => 'Ratio dead/live tuples of a database',
+    vlabel   => 'Nbr',
+    paramdatabase => 1,
+    pivotquery => 1,
+    basequery =>
+	"select sum(n_live_tup) as livetup, sum(n_dead_tup) as deadtup from pg_stat_user_tables",
+    configquery    => "values('livetup', 'livetup'), ('deadtup', 'deadtup')",
+    suggestquery =>
+        "SELECT datname FROM pg_database WHERE datallowconn AND NOT datistemplate AND NOT datname='postgres' UNION ALL SELECT 'ALL' ORDER BY 1 LIMIT 10",
+    graphdraw => 'AREA',
+    stack     => 1
+);
+
+$pg->Process();
+exit(0);