scripts/l2tpns-monitor

   1 #!/bin/sh
   2 stopfile=/tmp/l2tpns.stop
   3 first=`date +%s`
   4 min_first_time=3
   5 restart_delay=5
   6 prog=${0##*/}
   7
   8 while :
   9 do
  10         echo "`date`: Starting l2tpns $@"
  11         start=`date +%s`
  12         /usr/sbin/l2tpns ${1+"$@"}
  13         RETVAL=$?
  14         stop=`date +%s`
  15         t=$(($stop - $start));
  16         first=$(($stop - $first));
  17         echo "`date`: l2tpns exited after $t seconds, status $RETVAL"
  18         if [ $first -lt $min_first_time ]; then
  19                 echo "`date`: l2tpns exited immediately, $prog exiting"
  20                 exit $RETVAL
  21         fi
  22         if [ -f $stopfile ]; then
  23                 ls -l $stopfile
  24                 echo "`date`: stop file found, $prog exiting"
  25                 exit
  26         fi
  27         sleep $restart_delay
  28 done >>/var/log/$prog 2>&1      &       # execute in background