Initial version

plugins/other/postgresql_active_locks

@@ -0,0 +1,57 @@
+#!/bin/bash
+#
+# Plugin to monitor PostgreSQL Locks
+#
+# Author:
+#    Guilherme Augusto da Rocha Silva <gars.dba@gmail.com>
+#
+# Created:
+#    5th of november 2007
+#
+# Usage:
+#    Place in /etc/munin/plugins/ (or link it there using ln -s)
+#
+# Parameters:
+#    config   (required)
+#
+# General info:
+#    Require permission for database access and read (no writes are processed).
+#    Recomended user is PostgreSQL database owner (default: postgres).
+#
+# Log info:
+#
+
+dbserver='localhost'
+dbuser='postgres'
+
+if [ "$1" = "config" ]; then
+   echo 'graph_args --lower-limit 0'
+   echo 'graph_category Postgresql'
+   echo 'graph_info Shows active locks on database server.'
+   echo 'graph_scale no'
+   echo 'graph_title PostgreSQL Active Locks'
+   echo 'graph_vlabel Number of active locks'
+   echo 'AccessExclusive.label AccessExclusive'
+   echo 'AccessExclusive.info Access Exclusive Lock.'
+   echo 'AccessShare.label AccessShare'
+   echo 'AccessShare.info Access Share Lock.'
+   echo 'Exclusive.label Exclusive'
+   echo 'Exclusive.info Exclusive Lock.'
+   echo 'RowExclusive.label RowExclusive'
+   echo 'RowExclusive.info Row Exclusive Lock.'
+   echo 'RowShare.label RowShare'
+   echo 'RowShare.info Row Share Lock.'
+   echo 'Share.label Share'
+   echo 'Share.info Share Lock.'
+   echo 'ShareRowExclusive.label ShareRowExclusive'
+   echo 'ShareRowExclusive.info Share Row Exclusive Lock.'
+   echo 'ShareUpdateExclusive.label ShareUpdateExclusive'
+   echo 'ShareUpdateExclusive.info Share Update Exclusive Lock.'
+   exit 0
+fi
+
+psql -h ${dbserver} -U ${dbuser} -tc "SELECT trim(mode, 'Lock'), COUNT(*) FROM pg_locks GROUP BY mode ORDER BY 1;" | while read name sep num
+do
+   test -z "${name}" && continue
+   echo ${name}'.value '${num}
+done