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#!@@PERL@@
# -*- cperl -*-
#
# Copyright (C) 2009 Magnus Hagander, Redpill Linpro AB
#
# 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_connections_db - Plugin to monitor PostgreSQL connections per
database.
=head1 CONFIGURATION
Configuration is done through libpq environment variables, for example
PGUSER, PGDATABASE, etc. For more information, see L<Munin::Plugin::Pgsql>.
=head1 SEE ALSO
L<Munin::Plugin::Pgsql>
=head1 MAGIC MARKERS
#%# family=auto
#%# capabilities=autoconf
=head1 AUTHOR
Magnus Hagander <magnus@hagander.net>, Redpill Linpro AB
=head1 COPYRIGHT/License.
Copyright (c) 2009 Magnus Hagander, Redpill Linpro AB
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 strict;
use warnings;
use Munin::Plugin::Pgsql;
my $pg = Munin::Plugin::Pgsql->new(
title => 'PostgreSQL connections per database',
info => 'Number of connections per database',
vlabel => 'Connections',
basequery => [
"SELECT pg_database.datname,COALESCE(count,0) AS count FROM pg_database LEFT JOIN (SELECT datname,count(*) FROM pg_stat_activity WHERE pid != pg_backend_pid() GROUP BY datname) AS tmp ON pg_database.datname=tmp.datname WHERE datallowconn ORDER BY 1",
[ 9.4,
"SELECT pg_database.datname,COALESCE(count,0) AS count FROM pg_database LEFT JOIN (SELECT datname,count(*) FROM pg_stat_activity WHERE pid != pg_backend_pid() GROUP BY datname) AS tmp ON pg_database.datname=tmp.datname WHERE datallowconn ORDER BY 1",
],
[ 9.1,
"SELECT pg_database.datname,COALESCE(count,0) AS count FROM pg_database LEFT JOIN (SELECT datname,count(*) FROM pg_stat_activity WHERE procpid != pg_backend_pid() GROUP BY datname) AS tmp ON pg_database.datname=tmp.datname WHERE datallowconn ORDER BY 1",
],
],
configquery =>
"SELECT datname,datname FROM pg_database WHERE datallowconn ORDER BY 1",
);
$pg->Process();
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