CentOS7 Failed to start LSB: Bring up/down解决方法

时间 2021-01-19

标签 python 网络 ide this spa 3d rest 日志 code 栏目 Tomcat 繁體版

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刚刚装好的虚拟机忽然不能上网了，报错很诡异，具体报错以下：python

/etc/init.d/network restart网络

Restarting 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.ide

[失败]ui

使用systemctl status network.service命令查看结果以下：this

network.service - LSB: Bring up/down networkingspa

Loaded: loaded (/etc/rc.d/init.d/network)3d

Active: failed (Result: exit-code) since 三 2016-08-17 11:34:36 CST; 54s agorest

Docs: man:systemd-sysv-generator(8)日志

Process: 3847 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)code

8月 17 11:34:36 python.cn network[3847]: RTNETLINK answers: File exists

8月 17 11:34:36 python.cn systemd[1]: network.service: control process exited, code=exited status=1

8月 17 11:34:36 python.cn systemd[1]: Failed to start LSB: Bring up/down networking.

8月 17 11:34:36 python.cn systemd[1]: Unit network.service entered failed state.

8月 17 11:34:36 python.cn systemd[1]: network.service failed.

查看系统日志，报错以下：

Aug 17 11:34:36 python network: RTNETLINK answers: File exists

Aug 17 11:34:36 python systemd: network.service: control process exited, code=exited status=1

Aug 17 11:34:36 python systemd: Failed to start LSB: Bring up/down networking.

Aug 17 11:34:36 python systemd: Unit network.service entered failed state.

Aug 17 11:34:36 python systemd: network.service failed.

Aug 17 11:36:28 python systemd: Starting LSB: Bring up/down networking...

Aug 17 11:36:29 python network: 正在打开环回接口：没法载入文件 '/etc/sysconfig/network-scripts/ifcfg-lo'

Aug 17 11:36:29 python network: 没法载入文件 '/etc/sysconfig/network-scripts/ifcfg-lo'

Aug 17 11:36:29 python network: [ 肯定 ]

Aug 17 11:36:29 python network: 正在打开接口 eno16777736：错误：激活链接失败：No suitable device found for this connection.

经查，确认/etc/sysconfig/network-scripts/ifcfg-lo文件是存在的。问题出如今哪里呢？没法，只好百度一下吧，百度出来的结果居然基本同样。

百度答案：

mac地址不对，修改mac地址。

也许有人确实是mac问题，可是莫名其妙怎么可能mac地址更改了，除非你添加新网卡或者克隆的虚拟机。

我特么真笑了，天下百度文章一大抄啊。。。。。。。。

没办法了，Google一下吧，偶然看到一个文章，大意是跟系统自带的NetworkManager这个管理套件有关系，关掉就能够解决。

试一下：

systemctl stop NetworkManager

systemctl disable NetworkManager

Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.

Removed symlink /etc/systemd/system/dbus-org.freedesktop.NetworkManager.service.

Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.

从新启动网络：

systemctl start network.service

ifconfig |grep eno

eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500

inet 192.168.1.192 netmask 255.255.255.0 broadcast 192.168.1.255

inet6 fe80::20c:29ff:fe3d:b305 prefixlen 64 scopeid 0x20<link>

ether 00:0c:29:3d:b3:05 txqueuelen 1000 (Ethernet)

RX packets 2 bytes 120 (120.0 B)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 22 bytes 3551 (3.4 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

网络正常启动，访问正常。