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为Centos7虚拟机添加新网卡后无配置文件解决方法 ​

获取新网卡的UUID ​

shell
[root@openstack ~]# nmcli connection show
NAME        UUID                                  TYPE      DEVICE 
ens32       152beb06-47c5-c5e8-95a9-385590654382  ethernet  ens32  
ens34       94aea789-efb3-ef4c-81b0-e8b18ecc9797  ethernet  ens34  
有线连接 1  fac52535-2a20-391e-b538-4ce139172b1a  ethernet  --

获取MAC ​

shell
[root@openstack ~]# ip addr show ens32
2: ens32: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:1b:fc:a7 brd ff:ff:ff:ff:ff:ff
    inet 192.168.10.151/24 brd 192.168.10.255 scope global noprefixroute ens32
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe1b:fca7/64 scope link 
       valid_lft forever preferred_lft forever
[root@openstack ~]# ip addr show ens32|awk 'NR==2{print $2}'
00:0c:29:1b:fc:a7

复制原有网卡配置文件 ​

shell
cp /etc/sysconfig/network-scripts/ifcfg-ens34 /etc/sysconfig/network-scripts/ifcfg-ens32

修改配置文件 ​

这UUID和HWADDR可以不加

shell
[root@openstack ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens32
TYPE=Ethernet
BOOTPROTO=static
DEFROUTE=yes
NAME=ens32
DEVICE=ens32
ONBOOT=yes
IPADDR=192.168.10.151
PREFIX=24
UUID=152beb06-47c5-c5e8-95a9-385590654382
HWADDR=00:0c:29:1b:fc:a7

重启网卡 ​

shell
systemctl restart network

查看IP是否改变 ​

shell
[root@openstack ~]# ip a
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: ens32: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:1b:fc:a7 brd ff:ff:ff:ff:ff:ff
    inet 192.168.10.151/24 brd 192.168.10.255 scope global noprefixroute ens32
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe1b:fca7/64 scope link 
       valid_lft forever preferred_lft forever
3: ens34: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:1b:fc:b1 brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.151/24 brd 10.0.0.255 scope global noprefixroute ens34
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe1b:fcb1/64 scope link 
       valid_lft forever preferred_lft forever