How to add IP address in CentOS
Generally we can add a new IP to the eth0 network card
cd /etc/sysconfig/network-scripts/ cp ifcfg-eth0 ifcfg-eth0:1 vim ifcfg-eth0:1 DEVICE=eth0:1 # 修改网卡名称 HWADDR=29:61:16:5B:29:7C TYPE=Ethernet UUID=bf14538c-a6cf-4fd3-b459-e4db69437c2e ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=static IPADDR=192.168.1.203 NETMASK=255.255.255.192 GATEWAY=xxx.xxx.xx.xxx DNS1=8.8.8.8
Save and exit and then start the network card:
ifup eth0:1
Then you can use the ip addr command to check whether the addition is successful
Bonus: Delete the specified ip on the network card
ip addr del 192.168.0.1 dev eth0 # 删除网卡的第二个IP地址
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