在CentOS 7的安裝過程中如果有選擇相關(guān)虛擬化的的服務(wù)安裝系統(tǒng)后，啟動(dòng)網(wǎng)卡時(shí)會(huì)發(fā)現(xiàn)有一個(gè)以網(wǎng)橋連接的私網(wǎng)地址的virbr0網(wǎng)卡，這個(gè)是因?yàn)樵谔摂M化中有使用到libvirtd服務(wù)生成的，如果不需要可以關(guān)閉后去掉：

一、查看IP及網(wǎng)橋設(shè)備

[root@Node1 ~]# ip -4 addr    //查看IP地址 
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1 inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever 
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 inet 192.168.10.7/24 brd 192.168.10.255 scope global ens33
       valid_lft forever preferred_lft forever 
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN qlen 1000 inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever
[root@Node1 ~]# brctl show    //查看網(wǎng)橋
bridge name     bridge id STP enabled     interfaces
virbr0 8000.5254005caf00       yes             virbr0-nic
[root@Node1 ~]#

二、刪除網(wǎng)橋

[root@Node1 ~]# ifconfig virbr0 down   
[root@Node1 ~]# brctl delbr virbr0   //刪除網(wǎng)橋 

三、禁用開機(jī)服務(wù)

[root@Node1 ~]# systemctl disable libvirtd.service    //禁用libvirtd服務(wù)開機(jī)自啟動(dòng)
Removed symlink /etc/systemd/system/multi-user.target.wants/libvirtd.service.
Removed symlink /etc/systemd/system/sockets.target.wants/virtlockd.socket.
Removed symlink /etc/systemd/system/sockets.target.wants/virtlogd.socket.
[root@Node1 ~]# systemctl mask libvirtd.service        
Created symlink from /etc/systemd/system/libvirtd.service to /dev/null.

四、驗(yàn)證

[root@Node1 ~]# ip -4 add 
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1 inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever 
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 inet 192.168.10.7/24 brd 192.168.10.255 scope global ens33
       valid_lft forever preferred_lft forever