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60 lines
1.4 KiB
Bash
Executable File
60 lines
1.4 KiB
Bash
Executable File
#!/bin/bash
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#
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# Plugin to monitor PostgreSQL Locks
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#
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# Author:
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# Guilherme Augusto da Rocha Silva <gars.dba@gmail.com>
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#
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# Created:
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# 5th of november 2007
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#
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# Modified:
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# 22th of September 2011 by Nozomu Kaneko <nozom.kaneko@gmail.com>
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#
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# Usage:
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# Place in /etc/munin/plugins/ (or link it there using ln -s)
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#
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# Parameters:
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# config (required)
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#
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# General info:
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# Require permission for database access and read (no writes are processed).
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# Recommended user is PostgreSQL database owner (default: postgres).
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#
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# Log info:
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#
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dbserver='localhost'
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dbuser='postgres'
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modes="AccessExclusive AccessShare Exclusive RowExclusive RowShare Share ShareRowExclusive ShareUpdateExclusive"
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if [ "$1" = "config" ]; then
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echo 'graph_args --lower-limit 0'
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echo 'graph_category db'
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echo 'graph_info Shows active locks on database server.'
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echo 'graph_scale no'
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echo 'graph_title PostgreSQL Active Locks'
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echo 'graph_vlabel Number of active locks'
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for mode in $modes; do
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echo $mode.label $mode
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echo $mode.info `echo $mode | perl -pe 's/(.)([A-Z])/$1 $2/g'` Lock.
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done
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exit 0
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fi
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for mode in $modes; do
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eval ${mode}=0
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done
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eval $(psql -h ${dbserver} -U ${dbuser} template1 -tc "SELECT trim(mode, 'Lock'), COUNT(*) FROM pg_locks GROUP BY mode ORDER BY 1;" | while read name sep num
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do
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test -z "${name}" && continue
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echo ${name}=${num}
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done)
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for mode in $modes; do
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echo ${mode}.value $(eval echo \$$mode)
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done
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