host/ihost-perl/ihostchk.sh

#!/bin/sh
#
# Script to check that ihost is still running, and restart if necessary.
#
# You probably want to add this to a cronjob, say every 10 minutes:
#    0,10,20,30,40,50 * * * *   /path/to/ihostchk.sh
# And if you find yourself getting e-mails, use the following instead:
#    0,10,20,30,40,50 * * * *   /path/to/ihostchk.sh >/dev/null 2>&1
# NOTE: e-mails should only be sent if an error occurs, so the former is
#       the best choice for a cronjob.
#
# $Id: ihostchk.sh,v 1.1 2001/03/12 23:23:04 tdb1 Exp $
#

# CHANGE this to the directory of the ihost.pl script
ihostdir="/home/cut/tdb1/cvs/source/host/ihost"

# CHANGE these to represent your filtermanager details
fmhost="raptor.ukc.ac.uk"
fmport="4567"

# CHANGE this to point to the PID file
pidfile="/var/tmp/ihost.pid"

###### You probably don't need to change anything below here ######

ihost="ihost.pl"

cd $ihostdir

# is there a pid file?
if test -r $pidfile
then
  # there is a pid file, check to see if it's current
  ihostpid=`cat $pidfile`
  if `kill -CHLD $ihostpid >/dev/null 2>&1`
  then
    # it's still alive, lets leave it be
    exit 0
  fi
  # old pid file found
  echo ""
  echo "Stale $pidfile file, removing..."
  rm -f $pidfile
fi

# if we got here, we're clear to restart ihost
echo ""
echo "ihost is not running, starting up..."
echo ""
./$ihost $fmhost $fmport &
exit 0

# finished
Revision:	1.2
Committed:	Mon Mar 12 23:51:15 2001 UTC (24 years, 9 months ago) by tdb
Content type:	application/x-sh
Branch:	MAIN
CVS Tags:	PROJECT_COMPLETION
Changes since 1.1:	+3 -2 lines
Log Message:	Changed the path of the PID file... it didn't work so well when the ihost directory is on a shared file store :)
#	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	tdb	1.2	# $Id: ihostchk.sh,v 1.1 2001/03/12 23:23:04 tdb1 Exp $
13	tdb	1.1	#
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	tdb	1.2	# CHANGE this to point to the PID file
23			pidfile="/var/tmp/ihost.pid"
24	tdb	1.1
25			###### You probably don't need to change anything below here ######
26
27			ihost="ihost.pl"
28
29			cd $ihostdir
30
31			# is there a pid file?
32			if test -r $pidfile
33			then
34			# there is a pid file, check to see if it's current
35			ihostpid=`cat $pidfile`
36			if `kill -CHLD $ihostpid >/dev/null 2>&1`
37			then
38			# it's still alive, lets leave it be
39			exit 0
40			fi
41			# old pid file found
42			echo ""
43			echo "Stale $pidfile file, removing..."
44			rm -f $pidfile
45			fi
46
47			# if we got here, we're clear to restart ihost
48			echo ""
49			echo "ihost is not running, starting up..."
50			echo ""
51			./$ihost $fmhost $fmport &
52			exit 0
53
54			# finished