CentOS 7删除virbr0虚拟网卡

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: \ 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: \ mtu 1500 qdisc pfifo_fast state UP qlen 1000 inet 192.168.11.7/24 brd 192.168.11.255 scope global ens33 valid_lft forever preferred_lft forever 3: virbr0: \ 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: \ 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: \ mtu 1500 qdisc pfifo_fast state UP qlen 1000 inet 192.168.11.7/24 brd 192.168.11.255 scope global ens33 valid_lft forever preferred_lft forever