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Linux 重启network 失败的解决办法

执行systemctl restart network 失败

[root@ceph0 ~]# systemctl restart network
Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.
[root@ceph0 ~]# systemctl status network
● network.service - LSB: Bring up/down networking
Loaded: loaded (/etc/rc.d/init.d/network; bad; vendor preset: disabled)
Active: failed (Result: exit-code) since 二 2019-03-26 12:02:46 CST; 8s ago
Docs: man:systemd-sysv-generator(8)
Process: 3185106 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)

326 12:02:46 ceph0 network[3185106]: RTNETLINK answers: File exists
326 12:02:46 ceph0 network[3185106]: RTNETLINK answers: File exists
326 12:02:46 ceph0 network[3185106]: RTNETLINK answers: File exists
326 12:02:46 ceph0 network[3185106]: RTNETLINK answers: File exists
326 12:02:46 ceph0 network[3185106]: RTNETLINK answers: File exists
326 12:02:46 ceph0 network[3185106]: RTNETLINK answers: File exists
326 12:02:46 ceph0 systemd[1]: network.service: control process exited, code=exited status=1
326 12:02:46 ceph0 systemd[1]: Failed to start LSB: Bring up/down networking.
326 12:02:46 ceph0 systemd[1]: Unit network.service entered failed state.
326 12:02:46 ceph0 systemd[1]: network.service failed.

看红色部门 Failed to start LSB: Bring up/down networking. 但是实际上这个信息并没有什么卵用

要是你拿着这个信息不假思索的去网上搜一圈,我相信你有可能失望而归。 CSDN 等博客都是你抄我,我抄你,从来都不验证下的,就是复制粘贴。

排查思路

遇到这种问题,最好的办法就是看日志输出了啥咯,执行 tail -f /var/log/messages|grep network

[root@ceph0 ~]# tail -f /var/log/messages|grep network
Mar 26 12:05:06 ceph0 systemd: Starting LSB: Bring up/down networking...
Mar 26 12:05:06 ceph0 network: Bringing up loopback interface: [ OK ]
Mar 26 12:05:06 ceph0 network: Bringing up interface eth0: [ OK ]
Mar 26 12:05:06 ceph0 network: Bringing up interface eth1: Error: Connection activation failed: No suitable device found for this connection.
Mar 26 12:05:06 ceph0 network: [FAILED]
Mar 26 12:05:06 ceph0 network: Bringing up interface eth2: Error: Connection activation failed: No suitable device found for this connection.
Mar 26 12:05:06 ceph0 network: [FAILED]
Mar 26 12:05:06 ceph0 network: RTNETLINK answers: File exists
Mar 26 12:05:06 ceph0 network: RTNETLINK answers: File exists
Mar 26 12:05:06 ceph0 network: RTNETLINK answers: File exists
Mar 26 12:05:06 ceph0 network: RTNETLINK answers: File exists
Mar 26 12:05:06 ceph0 network: RTNETLINK answers: File exists
Mar 26 12:05:06 ceph0 network: RTNETLINK answers: File exists
Mar 26 12:05:06 ceph0 network: RTNETLINK answers: File exists
Mar 26 12:05:06 ceph0 network: RTNETLINK answers: File exists
Mar 26 12:05:06 ceph0 network: RTNETLINK answers: File exists
Mar 26 12:05:06 ceph0 systemd: network.service: control process exited, code=exited status=1
Mar 26 12:05:06 ceph0 systemd: Failed to start LSB: Bring up/down networking.
Mar 26 12:05:06 ceph0 systemd: Unit network.service entered failed state.
Mar 26 12:05:06 ceph0 systemd: network.service failed.

可以看到报错

Mar 26 12:05:06 ceph0 network: Bringing up interface eth1:  Error: Connection activation failed: No suitable device found for this connection.
Mar 26 12:05:06 ceph0 network: [FAILED]
Mar 26 12:05:06 ceph0 network: Bringing up interface eth2: Error: Connection activation failed: No suitable device found for this connection.

很明显,没有eth1 和eth2 接口 导致报错,进入 /etc/sysconfig/network-scripts/

[root@ceph0 ~]# cd /etc/sysconfig/network-scripts/
[root@ceph0 network-scripts]# ls
ifcfg-eth0 ifdown-eth ifdown-post ifdown-tunnel ifup-ippp ifup-post ifup-tunnel
ifcfg-eth1 ifdown-ib ifdown-ppp ifup ifup-ipv6 ifup-ppp ifup-wireless
ifcfg-eth2 ifdown-ippp ifdown-routes ifup-aliases ifup-isdn ifup-routes init.ipv6-global
ifcfg-lo ifdown-ipv6 ifdown-sit ifup-bnep ifup-ovs ifup-sit network-functions
ifdown ifdown-isdn ifdown-Team ifup-eth ifup-plip ifup-Team network-functions-ipv6
ifdown-bnep ifdown-ovs ifdown-TeamPort ifup-ib ifup-plusb ifup-TeamPort
[root@ceph0 network-scripts]#

删除eth1 和eth2 配置文件,重启网卡即可

root@ceph0 network-scripts]# rm -rf ifcfg-eth1 ifcfg-eth2
[root@ceph0 network-scripts]# systemctl restart network
[root@ceph0 network-scripts]#

文章作者:阿文
文章链接: https://www.awen.me/post/57567.html
版权声明:本博客所有文章除特别声明外,均采用 CC BY-NC-SA 4.0 许可协议。转载请注明来自 阿文的博客
本文于 2019-03-26 12:02 发布,已超过半年(2546天),请注意甄别内容是否已过期。

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