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#!/bin/bash |
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|
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# check_glusterfs_mount - plugin for nagios to check that a glusterfs partition |
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# is correctly mounted |
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# Copyright (C) 2008 Ioannis Aslanidis (deathwing00 at deathwing00 dot org) |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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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 Library General Public License for more details. |
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# |
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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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|
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TIMELIMIT=5 # We allow 5 seconds for ls to run. If it does not, we consider it has hanged. |
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TOTALPARAMS=1 # Total number of expected parameters. |
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MINLINES=2 # If we find less that these number of lines, we understand that there was an error. |
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|
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TryList() |
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{ |
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# We only expect one parameter: the path to check. |
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path=${1} |
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# List the contents of the path and verify that the output is correct |
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numlines=$(/bin/ls -l ${path} | /usr/bin/wc -l) |
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if [ ${numlines} -lt ${MINLINES} ]; then |
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echo CRITICAL: GlusterFS mount point ${1} is not working correctly. |
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exit 2 |
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fi |
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} |
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|
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TimerOn() |
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{ |
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/bin/sleep ${TIMELIMIT} && /usr/bin/kill -s 14 ${$} & |
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# Waits some seconds, then sends sigalarm to script. |
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} |
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|
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Int14Vector() |
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{ |
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echo CRITICAL: GlusterFS mount point ${1} is not working. Could not list the contents! |
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exit 2 |
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} |
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|
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# Timer interrupt (14) subverted for our purposes. |
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trap Int14Vector 14 |
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|
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# Check that the total number of parameters is correct. |
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if [ ${#} -ne ${TOTALPARAMS} ]; then |
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echo UNKNOWN: Script was executed with incorrect number of arguments. Check could not be performed. |
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exit 3 |
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fi |
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|
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# Start the timer. |
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TimerOn |
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# Make the call. |
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TryList ${1} |
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|
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# If we get past this point it means that everything went fine. |
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|
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# Return success. |
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echo OK: GlusterFS mount ${1} is available |
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|
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# Kill the alarm timer, we do not need it any more. (bash will write to stdout about the process that got killed, redirecting makes no sense here) |
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kill -9 ${!} |
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wait ${!} 2>/dev/null |
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# sleep 1 |
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|
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# Exit with success |
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exit 0 |
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