通过以下方式查找问题
- 查看脚本无误
- 查看keepalived配置文件无误
- 重启命令无效
最后发现问题是重启命令无效
编辑systemctl相关的文件：vim /usr/lib/systemd/system/keepalived.service
KillMode=process的大致意思是当停止keepalived的时候只会停掉主进程，而主进程产生的子进程是不会被杀掉的，这里选择把这项注释掉
[Service] Type=forking PIDFile=/run/keepalived.pid #KillMode=process EnvironmentFile=-/etc/sysconfig/keepalived ExecStart=/usr/local/keepalived/sbin/keepalived $KEEPALIVED_OPTIONS ExecReload=/bin/kill -HUP $MAINPID [Install] WantedBy=multi-user.target
重启配置： systemctl daemon-reload
杀死keepalived所有进程： killall keepalived
并重新启动keepalived： systemctl start keepalived
发现keepalived配置文件生效了，并且也可以stop和restart了
