virtual-ip/docker-entrypoint.sh

#!/bin/sh
#set -e

if [ -z ${service} ]; then echo "The service isn't defined!!!"; exit 1; fi
if [ -z ${floating_ip} ]; then echo "IP isn't defined!!!"; exit 1; fi
if [ -z ${floating_mask} ]; then echo "NetMASK isn't defined!!!"; exit 1; fi
if [ -z ${floating_if} ]; then echo "IF isn't defined!!!"; exit 1; fi

trap cleanup SIGTERM EXIT
  cleanup()
    {
      ip addr del ${floating_ip}/${floating_mask} dev ${floating_if}:floating
    }
    ip addr add ${floating_ip}/${floating_mask} brd + dev ${floating_if} label ${floating}:floating
exec "/tmp/check_ip.sh" "$@" &
wait