#!/bin/sh
while true
do
    if [ `netstat -lntup|grep nginx|wc -l` -ne 1 ];then
        systemctl stop keepalived
    else
	if [ ! `ps -ef|grep keepalived|grep -v grep|wc -l` -gt 1 ];then
	    systemctl start keepalived
	fi
    fi
    sleep 5
done