CentOS7 删除virbr0虚拟网卡

桃扇骨 2022-12-23 09:52 142阅读 0赞

在CentOS 7的安装过程中如果有选择相关虚拟化的的服务安装系统后，启动网卡时会发现有一个以网桥连接的私网地址的virbr0网卡，这个是因为在虚拟化中有使用到libvirtd服务生成的，如果不需要可以关闭后去掉：

** 一、查看IP及网桥设备**

[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    //查看网桥
    bridge name     bridge id               STP enabled     interfaces
    virbr0          8000.5254005caf00       yes             virbr0-nic
    [root@Node1 ~]#

** 二、删除网桥**

[root@Node1 ~]# ifconfig virbr0 down   
    [root@Node1 ~]# brctl delbr virbr0   //删除网桥

**三、禁用开机服务**

[root@Node1 ~]# systemctl disable libvirtd.service    //禁用libvirtd服务开机自启动
    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、验证**

[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

\*\*\*\*\*经过验证，发现virbr0已经删除\*\*\*\*