Centos7 虚拟机复制后网卡问题 Job for network.service failed
在運行“/etc/init.d/network?restart”命令時，出現錯誤“Job?for?network.service?failed.?See?'systemctl?status?network.service'?and?'journalctl?-xn'?for?deta”，運行“cat?/var/log/messages?|?grep?network”命令查看日志中出現的與network相關的信息，會發現下面輸出語句：
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.
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解決方法：
打開查看/etc/sysconfig/network-scripts/ifcfg-eth0文件
1. 發現其中的MAC地址和ifconfig命令輸出的MAC地址不一樣，對于這種情況刪除HWADDR這一行或者將這一行更新為ifconfig命令輸出的MAC即可。
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2. 完成第一步大部分人問題都能解決，如果還是報錯的話，仔細看看該文件內有沒有DEVICE這一行，如果有要注釋或者刪掉，因為這跟MAC地址一樣也是失效的。
[root@openstack?~]#?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
轉載于:https://www.cnblogs.com/LiCheng-/p/7867462.html
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