#!/bin/ksh
# This script is used to verify periodically if other servers are up
# check_server.sh
# Biju Thomas
#
whostname=`hostname`
for wserver in server1 server2 server3 server4 server5
do
if test $wserver != $whostname
then
   # If  100% packet loss returned, inform dba on call
   if [ `/etc/ping $wserver -n 1 | grep -c "100% packet loss"` -ne 0 ]
   then
    # Check if this server down information was reported earlier
    # If yes, don't send page again
    if test ! -f /home/oracle/.alerts/$wserver
    then
      # New alert, Page DBA, set marker file
      MESSAGE="$wserver NOT RESPONDING (Could Not Ping)... PLEASE CHECK IF SERVER IS DOWN."
      # echo $MESSAGE
      /usr/local/bin/qpage -s page -p dba_on_call $MESSAGE
      touch /home/oracle/.alerts/$wserver
      # Log pages sent
      date >> /home/oracle/.alerts/page.log
      echo $MESSAGE >> /home/oracle/.alerts/page.log
    fi
   else
    # Check if the server was down earlier and is up now
    # If yes, remove marker file
    if test -f /home/oracle/.alerts/$wserver
    then
      rm -f /home/oracle/.alerts/$wserver
      MESSAGE="$wserver IS UP... PLEASE VERIFY IF ALL ORACLE INSTANCES ARE OK."
      /usr/local/bin/qpage -s page -p dba_on_call $MESSAGE
      # Log pages sent
      date >> /home/oracle/.alerts/page.log
      echo $MESSAGE >> /home/oracle/.alerts/page.log
    fi
   fi
fi
done
#
# End of Script - Biju Thomas - 06/05/1998