添加新网卡

1、查询现在所有的网卡

[root@localhost ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    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: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:50:56:35🇨🇦e9 brd ff:ff:ff:ff:ff:ff
    inet 192.168.8.10/24 brd 192.168.8.255 scope global noprefixroute ens33
       valid_lft forever preferred_lft forever
    inet6 fe80::fea:9aa2:34d1:733f/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:63:7c:5b 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
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000
    link/ether 52:54:00:63:7c:5b brd ff:ff:ff:ff:ff:ff
[root@localhost ~]# 

2、从虚拟机管理器添加网卡

在虚拟机设置中选择最底下的添加，在添加硬件向导中选择添加网络适配器，选择你想要使用的网络适配器类型，最后选择完成。

3、查询网卡有没有添加成功。

[root@localhost ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    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: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:50:56:35🇨🇦e9 brd ff:ff:ff:ff:ff:ff
    inet 192.168.8.10/24 brd 192.168.8.255 scope global noprefixroute ens33
       valid_lft forever preferred_lft forever
    inet6 fe80::fea:9aa2:34d1:733f/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:63:7c:5b 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
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000
    link/ether 52:54:00:63:7c:5b brd ff:ff:ff:ff:ff:ff
5: ens37: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:7e:33:dc brd ff:ff:ff:ff:ff:ff
    inet 192.168.10.128/24 brd 192.168.10.255 scope global noprefixroute ens37
       valid_lft forever preferred_lft forever
    inet6 fe80::462c:a71c:a130:4cff/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
[root@localhost ~]# 

发现新增了一个ens37的网卡，网卡新增成功。