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# radwatch Script to watch RADIUS. Sends mail to root and
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# restarts radiusd when it dies [which ofcourse
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# WARNING! This script SHOULD NOT BE USED! It's only here for historical
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# purposes, and WILL be deleted in a future version of the
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# If you want to watch and re-start the server, we recommend
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# reading the file doc/supervise-radiusd.txt
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# Version: $Id: radwatch.in,v 1.7 2002/11/08 16:08:52 pnixon Exp $
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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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# 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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# Copyright (C) 2009 Network RADIUS SARL <info@networkradius.com>
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######################################################################
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# radwatch - Start the radius daemon and restart upon crash.
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# It also catches signals sent to it, and then re-sends those signals
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# to the radius server it is watching.
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# If you want to watch and re-start the server, we recommend
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# reading the file doc/supervise-radiusd.txt
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# This simplifies the script, and avoids most issues with (say)
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# Debian re-naming "radiusd" to "freeradius".
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exec_prefix=@exec_prefix@
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localstatedir=@localstatedir@
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rundir=${localstatedir}/run/radiusd
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RADIUSD=$sbindir/radiusd
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exec >> $logdir/radwatch.log 2>&1
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# get the path to the radiusd
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if [ "$1" ] && [ -x "$1" ]
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rundir=${localstatedir}/run/${name}
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sysconfdir=@sysconfdir@
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pid_file=${rundir}/${name}.pid
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log_file=${logdir}/${name}_safe.log
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# Figure out what arguments to pass tail
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echo foo | ${tail}1 > /dev/null 2>&1
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[ -d $logdir/radacct ] && cd $logdir/radacct
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RADIUSD=$sbindir/${name}
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RADDBDIR=${sysconfdir}/raddb
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# If you want to send email, define this field to be an email address.
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# This part of the functionality hasn't been well tested, so please
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# test it before putting it into production.
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# It also presumes that you have a functioning mail system on
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# the maching running RADIUS. You will need to check that the
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# "mail" command exists, and sends mail to the address below, e.g.:
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# echo test | mail -s "Testing" $MAILTO
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# If you receive the message, then enable MAILTO. Otherwise, fix
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# your mail system so that it delivers mail.
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# Allow "radiusd_safe -X" for testing the radiusd_safe functionality.
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test -f $RADIUSD || exit 0
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test -f $RADDBDIR/radiusd.conf || exit 0
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ulimit -c unlimited
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trap 'echo `date`: exit; kill `cat $rundir/radiusd.pid`; exit 0' TERM
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# Use `wait', otherwise the trap doesn't work.
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echo "$!" > $rundir/radiusd.pid
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exec >> $logdir/radwatch.log 2>&1
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echo "`date`: Radius died, restarting.."
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date | mail -s "Radius died, restarting.." $MAILTO
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echo "$!" > $rundir/radwatch.pid
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# See if the PID file exists. It might have been left over after
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# a crash, or it might be because the RADIUS server is still running.
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# Check if the process exists, AND if it has the right name
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if ps -p $PID | grep $name > /dev/null
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echo "`date +'%a %b %e %H:%M:%S %Y'` : Fatal: A $name process already exists at PID $PID. We cannot start another one." >> $log_file
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echo "A $name process already exists"
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# A RADIUS server doesn't exist. Delete the stale PID file.
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echo "`date +'%a %b %e %H:%M:%S %Y'` : Fatal: Cannot remove the pid file: $pid_file" >> $log_file
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echo "Fatal error: Cannot remove the pid file: $pid_file"
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echo "Please remove it manually and start $0 again"
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echo "$name daemon not started"
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echo $$ > ${rundir}/${name}_safe.pid
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# Loop forever, or until we're told to exit via a signal.
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# The first time around, just start the server.
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# After that, see if we are re-starting in the same second
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# as the last time. If so, sleep for a second. Otherwise,
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# if we're not starting in the same second, then just restart
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# This helps prevent CPU spikes when something goes catastrophically
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# wrong, and the server re-starts continuously. (e.g. disk full, etc.)
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now_s=`date +'%a %b %e %H:%M:%S %Y'`
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if test "$started" != "0"
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# Send mail when the server starts
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if test "$MAILTO" != ""
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# don't print minutes and seconds: cheap way
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# of sending email only once an hour.
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now=`date +'%a %b %e %H %Y'`
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restarts=`expr $restarts + 1`
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# send email the first time it restarts
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if test "$last_email" = "0"
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cat | mail -s "ERROR - $name died, restarting.." $MAILTO <<EOF
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$name has restarted unexpectedly at $now
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See $log_file for details. Last 20 lines are:
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----------------------------------------------------------------------
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`${tail}20 $log_file`
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# Send email only once every hour (or so)
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if test "$now" != "$last_email"
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cat | mail -s "ERROR - $name died, restarting.." $MAILTO <<EOF
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$name has restarted $restarts times since last email at $last_email
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See $log_file for details. Last 100 lines are:
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----------------------------------------------------------------------
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`${tail}100 $log_file`
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if test "$started" = "$now_s"
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# Allow us to be killed
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trap - HUP INT QUIT TERM TSTP
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eval "$RADIUSD -f $ARGS < /dev/null >> $log_file 2>&1 &"
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echo "Failed to start $name. See $log_file for details"
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echo "$name daemon not started"
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echo $PID > $pid_file
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# Wait for the process to exit.
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# On *BSD and Linux, sending *us* a signal results in "wait" returning
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# with 128+sig. On Solaris, it results in "wait" returning with "0".
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# If this happens, we reset our expectations here so that the code
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# below will work correctly.
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if test "$code" = "0"
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if test "$mysig" != ""
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code=`expr $mysig + 128`
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echo "`date +'%a %b %e %H:%M:%S %Y'` : Info: $name exited normally. Exiting" | tee -a $log_file
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echo "`date +'%a %b %e %H:%M:%S %Y'` : Info: $name exited unexpectedly. Restarting it." | tee -a $log_file
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# The server exited of its own accord.
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if test "$code" -lt 128
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echo "`date +'%a %b %e %H:%M:%S %Y'` : Info: $name exited unexpectedly on exit code $code. Restarting it." | tee -a $log_file
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sig=`expr $code - 128`
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# Was the signal sent to us, or to the child process?
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if test "$mysig" != ""
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echo "`date +'%a %b %e %H:%M:%S %Y'` : Info: Caught signal $sig: Signalling $name to exit." | tee -a $log_file
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echo "`date +'%a %b %e %H:%M:%S %Y'` : Info: $name exited unexpectedly on signal $sig. Restarting it." | tee -a $log_file
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rm -f $pid_file ${rundir}/${name}_safe.pid
added
removed
scripts/radwatch.in
