CentOS7上刪除virbr0網卡的步驟

說明：之前在CentOS7下配置過bridge，現在講bridge模式改為普通模式後，查看網卡的時候還是可以看到很多垃圾信息，想徹底刪除自己不想要的網卡配置信息，操作如下:

[root@linux-node1 ~]# ip add list
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
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: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:9b:7d:d6 brd ff:ff:ff:ff:ff:ff
inet 10.10.10.11/24 brd 10.10.10.255 scope global eth0
 valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe9b:7dd6/64 scope link 
 valid_lft forever preferred_lft forever
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN qlen 1000
link/ether 52:54:00:f4:24:05 brd ff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
 valid_lft forever preferred_lft forever
5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN qlen 1000
link/ether 52:54:00:f4:24:05 brd ff:ff:ff:ff:ff:ff

查看網路清單：

[root@linux-node1 ~]# virsh net-list
 Name StateAutostart Persistent
----------------------------------------------------------
 defaultactive yes yes

使用「virsh net-destroy default」刪除

[root@linux-node1 ~]# virsh net-destroy default
Network default destroyed

從設定檔中剔除

[root@linux-node1 ~]# virsh net-undefine default
Network default has been undefined

重啟libvirtd服務

[root@linux-node1 ~]# systemctl restart libvirtd.service
[root@linux-node1 ~]# virsh net-list
 Name StateAutostart Persistent
----------------------------------------------------------
[root@linux-node1 ~]# ip add list
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
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: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:9b:7d:d6 brd ff:ff:ff:ff:ff:ff
inet 10.10.10.11/24 brd 10.10.10.255 scope global eth0
 valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe9b:7dd6/64 scope link 
 valid_lft forever preferred_lft forever

再次查看，發現不必要的資訊已經清除，清爽多了

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