Centos7 虚拟机复制后网卡问题 Job for network.service failed

在运行“/etc/init.d/network restart”命令时，出现错误“Job for network.service failed. See ‘systemctl status network.service‘ and ‘journalctl -xn‘ for deta”，运行“cat /var/log/messages | grep network”命令查看日志中出现的与network相关的信息，会发现下面输出语句：

Nov 17 11:31:16 openstack network: Bringing up interface eth0:  Error: no device found for connection ‘eth0‘.

Nov 17 11:31:16 openstack network: [FAILED]

Nov 17 11:31:16 openstack network: RTNETLINK answers: File exists

Nov 17 11:31:16 openstack network: RTNETLINK answers: File exists

Nov 17 11:31:16 openstack network: RTNETLINK answers: File exists

Nov 17 11:31:16 openstack network: RTNETLINK answers: File exists

Nov 17 11:31:16 openstack network: RTNETLINK answers: File exists

Nov 17 11:31:16 openstack network: RTNETLINK answers: File exists

Nov 17 11:31:16 openstack network: RTNETLINK answers: File exists

Nov 17 11:31:16 openstack network: RTNETLINK answers: File exists

Nov 17 11:31:16 openstack network: RTNETLINK answers: File exists

Nov 17 11:31:16 openstack systemd: network.service: control process exited, code=exited status=1

Nov 17 11:31:16 openstack systemd: Failed to start LSB: Bring up/down networking.

Nov 17 11:31:16 openstack systemd: Unit network.service entered failed state.

解决方法：

打开查看/etc/sysconfig/network-scripts/ifcfg-eth0文件

1. 发现其中的MAC地址和ifconfig命令输出的MAC地址不一样，对于这种情况删除HWADDR这一行或者将这一行更新为ifconfig命令输出的MAC即可。

2. 完成第一步大部分人问题都能解决，如果还是报错的话，仔细看看该文件内有没有DEVICE这一行，如果有要注释或者删掉，因为这跟MAC地址一样也是失效的。

[[email protected] ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0

# HWADDR=1A:E9:47:A5:75:C8

TYPE=Ethernet

BOOTPROTO=static

DEFROUTE=yes

PEERDNS=yes

PEERROUTES=yes

IPV4_FAILURE_FATAL=no

IPV6INIT=yes

IPV6_AUTOCONF=yes

IPV6_DEFROUTE=yes

IPV6_PEERDNS=yes

IPV6_PEERROUTES=yes

IPV6_FAILURE_FATAL=no

IPADDR=192.168.1.79

PREFIX=24

GATEWAY=192.168.1.1

DNS1=192.168.1.1

DNS2=8.8.8.8

NAME=eth0

UUID=ba670f0c-201a-483b-8379-c8c72c03ab27

# DEVICE=en01677736

ONBOOT=yes

时间： 2024-08-25 12:41:08

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