centos7下修改静态ip

编辑/etc/sysconfig/network-scripts/ifcfg-ens33文件：

[root@localhost /]# vi /etc/sysconfig/network-scripts/ifcfg-ens33 
[root@localhost /]# 

修改ONBOOT为yes，修改BOOTPROTO为static，增加IPADDR、NETMASK、GATEWAY、DNS1等配置（IPADDR、NETMASK、GATEWAY根据自己实际情况配置，DNS1可以配置为8.8.8.8）；具体如下所示：

[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens33 
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
#BOOTPROTO=dhcp
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=f45f9d57-f438-413d-8b03-c19f9ef8886c
DEVICE=ens33
#ONBOOT=no

ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.79.100
NETMASK=255.255.255.0
GATEWAY=192.168.79.2
DNS1=8.8.8.8
[root@localhost ~]# 

重启网络服务：

[root@localhost ~]# sudo systemctl restart network

检查是否生效：

[root@localhost ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.79.100  netmask 255.255.255.0  broadcast 192.168.79.255
        inet6 fe80::e886:e80a:896f:9624  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:9f:68:68  txqueuelen 1000  (Ethernet)
        RX packets 3227  bytes 257036 (251.0 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1796  bytes 403919 (394.4 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 432  bytes 37576 (36.6 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 432  bytes 37576 (36.6 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255
        ether 52:54:00:08:80:2e  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@localhost ~]#