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58 lines
1.9 KiB
Bash
Executable File
58 lines
1.9 KiB
Bash
Executable File
#!/bin/bash
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#
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# Plugin to monitor PostgreSQL Database Ratios (blocks read X blocks hit)
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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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# 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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# 2007/11/30 - Review on comments
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#
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dbserver='localhost'
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dbuser='postgres'
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if [ "$1" = "config" ]; then
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echo 'graph_args --base 1000 --lower-limit 0 --upper-limit 100'
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echo 'graph_category db'
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echo 'graph_info Shows each database read/hit (%) on the PostgreSQL Server.'
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echo 'graph_scale no'
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echo 'graph_title PostgreSQL Database Hit/Read Ratios'
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echo 'graph_vlabel % of blocks read and hits'
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psql -h ${dbserver} -U ${dbuser} -tc "SELECT datname FROM pg_stat_database WHERE datname != 'template0' ORDER BY 1;" | while read name
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do
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test -z "${name}" && continue
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echo ${name}'.label '${name}
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echo ${name}'.type GAUGE'
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echo ${name}'.min 0'
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echo ${name}'.max 100'
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if [ "${name}" == "template0" ]; then
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echo ${name}'.info PostgreSQL template database.'
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elif [ "${name}" == "template1" ]; then
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echo ${name}'.info PostgreSQL and/or user template database.'
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elif [ "${name}" == "postgres" ]; then
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echo ${name}'.info User postgres database.'
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else
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echo ${name}'.info User defined database.'
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echo ${name}'.critical 50:min'
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echo ${name}'.warning 75:min'
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fi
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done
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exit 0
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fi
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psql -h ${dbserver} -U ${dbuser} -tc "SELECT datname||'.value '||(CASE WHEN (blks_hit > 0) THEN ROUND((blks_hit::NUMERIC / (blks_hit + blks_read)::NUMERIC) * 100, 2) ELSE 0 END)::TEXT FROM pg_stat_database WHERE datname != 'template0' ORDER BY datname;"
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