Network Interface Setting - Static (CentOS 7)

Environment: CentOS 7(1804) Minimal
Required: Root privilege, text editor

1. ip addr로 network interface 확인

$ ip addr
1: lo : <LOOPBACK,UP,LOWER_IP> mtu 65536 qdisc noqueue state ...
	link/loopback 00:00:00:00:00:00 ...
	inet 127.0.0.1/8 scope host lo
	...
2: enp0s25: <BROADCAST,MULTICAST,UP,...>...
	link/ether ...
	inet ...

여기서는 내 network interface가 enp0s25임을 확인할 수 있다.
2번에서 ifcfg-<network interface card 이름>으로 사용하면 된다. lo는 loopback.

2. Load network interface script

vim /etc/sysconfig/network-script/ifcfg-enp0s25

3. Setting

...
BOOTPROTO=static
...
IPADDR=192.168.0.100
NETMASK=255.255.255.0
GATEWAY=192.168.0.1
DNS1=8.8.8.8