ipvsadm启动报错解决方法

Centos7 yum -y install ipvadm 安装后，启动ipvsadm却报错。

Redirecting to /bin/systemctl start  ipvsadm.service
Job for ipvsadm.service failed because the control process exited with error code. See "systemctl status ipvsadm.service" and "journalctl -xe" for details.

看提示是要我查看服务状态

# systemctl status ipvsadm.service
● ipvsadm.service - Initialise the Linux Virtual Server
   Loaded: loaded (/usr/lib/systemd/system/ipvsadm.service; disabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since 三 2017-06-28 18:15:15 CST; 12s ago
  Process: 2505 ExecStart=/bin/bash -c exec /sbin/ipvsadm-restore < /etc/sysconfig/ipvsadm (code=exited, status=1/FAILURE)
 Main PID: 2505 (code=exited, status=1/FAILURE)

6月 28 18:15:15 localhost.localdomain systemd[1]: Starting Initialise the Linux Virtual Server...
6月 28 18:15:15 localhost.localdomain bash[2505]: /bin/bash: /etc/sysconfig/ipvsadm: 没有那个文件或目录
6月 28 18:15:15 localhost.localdomain systemd[1]: ipvsadm.service: main process exited, code=exited, status=1/FAILURE
6月 28 18:15:15 localhost.localdomain systemd[1]: Failed to start Initialise the Linux Virtual Server.
6月 28 18:15:15 localhost.localdomain systemd[1]: Unit ipvsadm.service entered failed state.
6月 28 18:15:15 localhost.localdomain systemd[1]: ipvsadm.service failed.

提示没有

/etc/sysconfig/ipvsadm

网上查阅很多资料，说先save,可是并没有这个操作。

# service ipvsadm save
The service command supports only basic LSB actions (start, stop, restart, try-restart, reload, force-reload, status). For other actions, please try to use systemctl.

?

最后还是看到个靠谱的解决方法，手动生成这个文件：

ipvsadm --save > /etc/sysconfig/ipvsadm

?

service ipvsadm start ? ，启动OK。