Linux 无法启动网络(service network restart) 错误解决办法 |
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解决策略《—》
1、执行 service network restart 出现以下错误 Restarting network (via systemctl): Job for network.service failed. See 'systemctl status network.service' and 'journalctl -xn' for details. 2、根据上面的提示,执行“systemctl status network.service”输出以下的类似信息: [root@localhost ~]# systemctl status network.service network.service - LSB: Bring up/down networking Loaded: loaded (/etc/rc.d/init.d/network) Active: failed (Result: exit-code) since三 2014-11-05 15:30:10 CST; 1min 5s ago
11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 11月 05 15:30:10 localhost.localdomain systemd[1]: network.service: control process exited, code=exited status=1 11月 05 15:30:10 localhost.localdomain systemd[1]: Failed to start LSB: Bring up/down networking. 11月 05 15:30:10 localhost.localdomain systemd[1]: Unit network.service entered failed state. 3、修改mac地址 由于centos7中没有70-persistent-net.rules这个文件,复制出来的虚拟机(vmware)需要修改mac地址。 4、查看虚拟机mac地址 执行 “ip addr”,输出如下的类似信息: [root@localhost ~]# ip addr 1: lo: link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eno16777736: link/ether 00:0f:19:10:12:f1 brd ff:ff:ff:ff:ff:ff inet 192.168.38.135/24 brd 192.168.38.255 scope global dynamic eno16777736 valid_lft 1681sec preferred_lft 1681sec inet6 fe80::20c:11aa:ae11:4fe4/64 scope link valid_lft forever preferred_lft forever 注意:上面加粗加红的字,这就是新的mac地址。 接下来就剩下修改ifcfg-XXX文件了,只修改HWADDR就可以了。接下来执行service network restart就正常了。 解决策略《二》如果还是启动失败 查看是否有如下错误信息 Nov 23 22:09:07 hdcoe02 network[597]: Bringing up loopback interface: Could not load file '/etc/sysconfig/network-scripts/ifcfg-lo' Nov 23 22:09:07 hdcoe02 network[597]: Could not load file '/etc/sysconfig/network-scripts/ifcfg-lo' Nov 23 22:09:08 hdcoe02 network[597]: Could not load file '/etc/sysconfig/network-scripts/ifcfg-lo' Nov 23 22:09:08 hdcoe02 network[597]: Could not load file '/etc/sysconfig/network-scripts/ifcfg-lo' Nov 23 22:09:08 hdcoe02 network[597]: [ OK ] Nov 23 22:09:08 hdcoe02 network[597]: Bringing up interface enp0s25: Error: Connection activation failed: Connection 'enp0s25' is not available on the device enp0s25 at this time. 设定开机启动一个名为NetworkManager-wait-online服务,命令为: systemctl enable NetworkManager-wait-online.service 解决策略《三》我也是上面方法都测试完了 一直不成功,最后发现时因为在VMware 虚拟机里面的系统 右上角显示的连接都没有连接上,虽然报错都一样,最后我在虚拟机设置里面将原来的网络适配器删掉,重新建了一个新的网络适配器,这次进去,显示连接成功,再用上面的方法,问题解决。 |
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