linux下重启网卡使用命令 ： service network restart 时报错：
[root@slave01 hadoop]# service network restart
Starting network (via systemctl): Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.
[失败]
[root@slave01 hadoop]# journalctl -xe
10月 09 17:39:20 slave01 network[12763]: 正在打开环回接口： [ 确定 ]
10月 09 17:39:20 slave01 NetworkManager[730]: <info> [1539077960.4630] audit: op="conn
10月 09 17:39:20 slave01 network[12763]: 正在打开接口 ens33： 错误：激活连接失败：No su
10月 09 17:39:20 slave01 network[12763]: [失败]
10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
10月 09 17:39:20 slave01 systemd[1]: network.service: control process exited, code=exit
10月 09 17:39:20 slave01 systemd[1]: Failed to start LSB: Bring up/down networking.
-- Subject: Unit network.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit network.service has failed.
--
-- The result is failed.
10月 09 17:39:20 slave01 systemd[1]: Unit network.service entered failed state.
10月 09 17:39:20 slave01 systemd[1]: network.service failed.
10月 09 17:39:20 slave01 polkitd[725]: Unregistered Authentication Agent for unix-proce
解决如下
执行如下命令：
stop NetworkManager
systemctl disable NetworkManager
然后：重启网卡：
systemctl restart network