105 lines
2.8 KiB
Plaintext
105 lines
2.8 KiB
Plaintext
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#!/usr/bin/perl
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# -*- perl -*-
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# Jean-Samuel Reynaud <js.reynaud@free.fr>
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# Based on postgres_locks
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#
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# Wildcard-plugin to monitor slony latency. To monitor a
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# slony cluster, link slony_<cluster_schema> to this file. E.g.
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#
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# ln -s /usr/share/munin/node/plugins-auto/slony_ /etc/munin/node.d/slony__my_cluster
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#
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# ...will monitor my_cluster's slony cluster
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#
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# Show slony latency
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#
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# Parameters:
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#
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# config
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# autoconf
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#
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#
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#
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# Configuration variables:
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#
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# PGHOST - Database server to use. Defaults to using ident
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# authentication with the local server.
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# PGPORT - Port to connect to. Defaults to '5432'.
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# PGDATABASE - Database to connect to. Defaults to 'template1'.
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# PGUSER - User to connect as, if necessary.
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# PGPASSWORD - Corresponding password to use, if necessary.
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#
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# (See libpq documentation for more.)
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# Note that PGDATABASE will default to 'template1' in this plugin, and
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# without PGHOST it will try ident authentication with the local server,
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# as the user that the plugin is running as.
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#
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# Configuration example:
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#
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# # Use local server, ident authentication with the 'postgres' user.
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# [slony_*]
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# user postgres
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#
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# # Use local server, TCP authentication with a username and password.
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# [slony_*]
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# env.PGHOST localhost
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# env.PGUSER someuser
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# env.PGDATABASE somedb
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# env.PGPASSWORD somepassword
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#
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# Magic markers
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#%# family=auto
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#%# capabilities=
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use strict;
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use warnings;
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use DBI;
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my $cluster = $0;
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$cluster =~ s/^.*slony_([\w\d\._\-]*)$/$1/;
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# Default to template1 database.
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$ENV{'PGDATABASE'} ||= 'template1';
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my $dbh = DBI->connect ('dbi:Pg:', '', '', {RaiseError =>1})
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|| die "Unable to access database.\nError returned was: ". $DBI::errstr;
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if ($ARGV[0] && $ARGV[0] eq "config") {
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print <<EOF;
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graph_title Slony latency
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graph_args --base 1000
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graph_vlabel Latency in seconds
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graph_category PostgreSQL
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graph_info Shows Slony latency
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EOF
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my $sql="select no_id,no_comment,pa_conninfo from $cluster.sl_node join $cluster.sl_path on (pa_server=no_id) where pa_client= $cluster.getlocalnodeid('$cluster'::name);";
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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 $exlocks = 0;
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while (my ($no_id,$comment, $conninfo) = $sth->fetchrow ()) {
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$conninfo =~ s/.*host=([\w\d\._\-]*)\s.*/$1/;
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$no_id = sprintf("slave_%u",$no_id);
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print<<EOF
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$no_id.label $conninfo
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$no_id.info $comment
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$no_id.type GAUGE
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$no_id.warning 60
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$no_id.critical 1800
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$no_id.min 0
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EOF
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}
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} else {
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my $sql="select st_received,st_lag_num_events,EXTRACT(EPOCH FROM st_lag_time)::integer from $cluster.sl_status;";
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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 $exlocks = 0;
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while (my ($no_id,$nb_event, $lag) = $sth->fetchrow ()) {
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$no_id = sprintf("slave_%u",$no_id);
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print "$no_id.value $lag\n"
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}
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}
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