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root/i-scream/projects/cms/source/host/ihost-perl/ihostchk.sh
Revision: 1.1
Committed: Mon Mar 12 23:23:04 2001 UTC (23 years, 6 months ago) by tdb
Content type: application/x-sh
Branch: MAIN
Log Message:
This new script can be run from a cronjob to verify ihost is running. If ihost
is running, it exits silently, and is thus unobtrusive. If ihost is not running,
it will start it up again.

File Contents

# User Rev Content
1 tdb 1.1 #!/bin/sh
2     #
3     # Script to check that ihost is still running, and restart if necessary.
4     #
5     # You probably want to add this to a cronjob, say every 10 minutes:
6     # 0,10,20,30,40,50 * * * * /path/to/ihostchk.sh
7     # And if you find yourself getting e-mails, use the following instead:
8     # 0,10,20,30,40,50 * * * * /path/to/ihostchk.sh >/dev/null 2>&1
9     # NOTE: e-mails should only be sent if an error occurs, so the former is
10     # the best choice for a cronjob.
11     #
12     # $Id$
13     #
14    
15     # CHANGE this to the directory of the ihost.pl script
16     ihostdir="/home/cut/tdb1/cvs/source/host/ihost"
17    
18     # CHANGE these to represent your filtermanager details
19     fmhost="raptor.ukc.ac.uk"
20     fmport="4567"
21    
22    
23     ###### You probably don't need to change anything below here ######
24    
25     pidfile="ihost.pid"
26     ihost="ihost.pl"
27    
28     cd $ihostdir
29    
30     # is there a pid file?
31     if test -r $pidfile
32     then
33     # there is a pid file, check to see if it's current
34     ihostpid=`cat $pidfile`
35     if `kill -CHLD $ihostpid >/dev/null 2>&1`
36     then
37     # it's still alive, lets leave it be
38     exit 0
39     fi
40     # old pid file found
41     echo ""
42     echo "Stale $pidfile file, removing..."
43     rm -f $pidfile
44     fi
45    
46     # if we got here, we're clear to restart ihost
47     echo ""
48     echo "ihost is not running, starting up..."
49     echo ""
50     ./$ihost $fmhost $fmport &
51     exit 0
52    
53     # finished