virtual-ip/check_ip.sh

#!/bin/sh
check_ip() {
  ip a | grep ${vip}/${vin}
  if [ $? == 0 ]; then echo "${vip} is exist!!!"; return 0; else echo "The ${vip} doesn't exist!"; return 1; fi
}

check=0

while [ ${check} -eq 0 ]
do 
  check_ip
  if [ $? != 0 ]; then check=1; else sleep 10; fi
done