/[pdpsoft]/trunk/nl.nikhef.ndpf.tools/nagios-ndpf-sensors/scripts/check_glusterfs
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Contents of /trunk/nl.nikhef.ndpf.tools/nagios-ndpf-sensors/scripts/check_glusterfs

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Revision 2603 - (show annotations) (download)
Fri Feb 22 12:19:44 2013 UTC (9 years, 2 months ago) by ronalds
File size: 2440 byte(s)
modified output
1 #!/bin/bash
2
3 # check_glusterfs_mount - plugin for nagios to check that a glusterfs partition
4 # is correctly mounted
5 # Copyright (C) 2008 Ioannis Aslanidis (deathwing00 at deathwing00 dot org)
6 #
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2 of the License, or
10 # (at your option) any later version.
11 #
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU Library General Public License for more details.
16 #
17 # You should have received a copy of the GNU General Public License
18 # along with this program; if not, write to the Free Software
19 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20
21 TIMELIMIT=5 # We allow 5 seconds for ls to run. If it does not, we consider it has hanged.
22 TOTALPARAMS=1 # Total number of expected parameters.
23 MINLINES=2 # If we find less that these number of lines, we understand that there was an error.
24
25 TryList()
26 {
27 # We only expect one parameter: the path to check.
28 path=${1}
29 # List the contents of the path and verify that the output is correct
30 numlines=$(/bin/ls -l ${path} | /usr/bin/wc -l)
31 if [ ${numlines} -lt ${MINLINES} ]; then
32 echo CRITICAL: GlusterFS mount point ${1} is not working correctly.
33 exit 2
34 fi
35 }
36
37 TimerOn()
38 {
39 /bin/sleep ${TIMELIMIT} && /usr/bin/kill -s 14 ${$} &
40 # Waits some seconds, then sends sigalarm to script.
41 }
42
43 Int14Vector()
44 {
45 echo CRITICAL: GlusterFS mount point ${1} is not working. Could not list the contents!
46 exit 2
47 }
48
49 # Timer interrupt (14) subverted for our purposes.
50 trap Int14Vector 14
51
52 # Check that the total number of parameters is correct.
53 if [ ${#} -ne ${TOTALPARAMS} ]; then
54 echo UNKNOWN: Script was executed with incorrect number of arguments. Check could not be performed.
55 exit 3
56 fi
57
58 # Start the timer.
59 TimerOn
60 # Make the call.
61 TryList ${1}
62
63 # If we get past this point it means that everything went fine.
64
65 # Return success.
66 echo OK: GlusterFS mount ${1} is available
67
68 # 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)
69 kill -9 ${!}
70 wait ${!} 2>/dev/null
71 # sleep 1
72
73 # Exit with success
74 exit 0

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