Initial version
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Benjamin Renard
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.gitignore
vendored
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.gitignore
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*~
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.*.swp
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README.md
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README.md
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Icinga/Nagios plugin to check MDB database
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==========================================
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This script could be used as Icinga/Nagios check plugin to check MDB database.
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This script use _mdb_stat_ utility to do this check.
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Usage
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-----
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```
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Usage : check_mdb [-d] [-h] [-w warning] [-c critical] [options]
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-u Sudo as specified user to run mdb_stat
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-s Path to mdb_stat (Default : auto-detected)
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-p Database path (Default : /var/lib/ldap)
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-w Used pages percentage warning limit (Default: 70)
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-c Used pages percentage critical limit (Default: 90)
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-d Debug mode
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-h Show this message
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```
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Copyright
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---------
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Copyright (c) 2020 Benjamin Renard
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License
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-------
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License version 3
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as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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141
check_mdb
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check_mdb
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#!/bin/bash
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#
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# Nagios plugin to check slapd schema
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#
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# Author : Benjamin Renard <brenard@easter-eggs.com>
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# Date : Wed, 12 Jun 2019 13:15:33 +0200
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# Source : http://gogs.zionetrix.net/check_slapd_schema
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#
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SUDO_USER=""
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MDB_STAT=mdb_stat
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DB_PATH="/var/lib/ldap"
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USED_PAGES_PERC_WARNING_LIMIT=70
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USED_PAGES_PERC_CRITICAL_LIMIT=90
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DEBUG=0
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function debug() {
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if [ $DEBUG -eq 1 ]
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then
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>&2 echo -e "[DEBUG] $1"
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fi
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}
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function format_size() {
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SIZE=$1
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UNIT="b"
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if [ -z "$SIZE" -o "$SIZE" == "0" ]
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then
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SIZE="0"
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UNIT=""
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elif [ $SIZE -ge 1073741824 ]
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then
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SIZE=$( echo "scale=1; $SIZE/1073741824"|bc )
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UNIT="Gb"
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elif [ $SIZE -ge 1048576 ]
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then
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SIZE=$( echo "scale=1; $SIZE/1048576"|bc )
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UNIT="Mb"
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elif [ $SIZE -ge 1024 ]
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then
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SIZE=$( echo "scale=1; $SIZE/1024"|bc )
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UNIT="Kb"
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fi
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echo "${SIZE}${UNIT}"
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}
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function usage() {
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cat << EOF
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Usage : $0 [-d] [-h] [-w warning] [-c critical] [options]
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-u Sudo as specified user to run mdb_stat
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-s Path to mdb_stat (Default : auto-detected)
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-p Database path (Default : $DB_PATH)
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-w Used pages percentage warning limit (Default: $USED_PAGES_PERC_WARNING_LIMIT)
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-c Used pages percentage critical limit (Default: $USED_PAGES_PERC_CRITICAL_LIMIT)
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-d Debug mode
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-h Show this message
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EOF
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}
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while getopts "hu:s:p:d" OPTION
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do
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case $OPTION in
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u)
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SUDO_USER=$OPTARG
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;;
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s)
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MDB_STAT=$OPTARG
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;;
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p)
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DB_PATH=$OPTARG
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;;
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w)
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USED_PAGES_PERC_WARNING_LIMIT=$OPTARG
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;;
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c)
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USED_PAGES_PERC_CRITICAL_LIMIT=$OPTARG
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;;
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d)
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DEBUG=1
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;;
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h)
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usage
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exit 0
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;;
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*)
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echo "Unkown option '$OPTION'"
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usage
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exit 1
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esac
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done
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CMD="$MDB_STAT -e $DB_PATH"
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debug "mdb_stat command = '$CMD'"
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if [ -n "$SUDO_USER" ]
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then
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debug "run slapdschema command as $SUDO_USER"
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OUTPUT=$( sudo -u $SUDO_USER $CMD 2>&1 )
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EXITCODE=$?
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else
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OUTPUT=$( $CMD 2>&1 )
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EXITCODE=$?
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fi
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debug "Output :\n$OUTPUT"
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debug "Exit code : $EXITCODE"
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if [ $EXITCODE -ne 0 -o -z "$OUTPUT" ]
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then
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echo "UNKNOWN - mdb_stat exit with $EXITCODE"
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exit 3
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fi
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max_pages=$( echo -e "$OUTPUT"|grep -E '^ +Max pages: '|sed 's/^ \+Max pages: \([0-9]\+\)$/\1/' )
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used_pages=$( echo -e "$OUTPUT"|grep -E '^ +Number of pages used: '|sed 's/^ \+Number of pages used: \([0-9]\+\)$/\1/' )
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let perc_used=$used_pages*100/$max_pages
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debug "Used/max pages: $used_pages / $max_pages ($perc_used%)"
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page_size=$( echo -e "$OUTPUT"|grep -E '^ +Page size:'|sed 's/^ \+Page size: \([0-9]\+\)$/\1/' )
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debug "Page size: $page_size"
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let max_size=$max_pages*$page_size
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let used_size=$used_pages*$page_size
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debug "Used/max sizes: $used_size/$max_size"
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if [ $perc_used -gt $USED_PAGES_PERC_CRITICAL_LIMIT ]
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then
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STATE=CRITICAL
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EXITCODE=2
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elif [ $perc_used -gt $USED_PAGES_PERC_WARNING_LIMIT ]
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then
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STATE=WARNING
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EXITCODE=1
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else
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STATE=OK
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EXITCODE=0
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fi
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echo "$STATE - $perc_used% pages used ($used_pages pages on $max_pages / $( format_size $used_size) on $( format_size $max_size ))"
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exit $EXITCODE
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