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How to add IP address in CentOS

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Release： 2024-01-05 20:37:43
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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
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Save and exit and then start the network card: 

ifup eth0:1
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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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source：jb51.net
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