centos7 配置静态ip

[root@zhangxs network-scripts]# nmcli dev status
DEVICE      TYPE      STATE      CONNECTION  
virbr0      bridge    connected  virbr0      
enp1s0f0    ethernet  connected  enp1s0f0    //这个是我系统默认的网卡名
wlp2s0      wifi      connected  newifi_B5E0 
lo          loopback  unmanaged  --          
virbr0-nic  tun       unmanaged  --  

TYPE=Ethernet
BOOTPROTO=static //原是dhcp，改为static
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=enp1s0f0
UUID=f032d1e7-ccca-49c7-a845-5a02c404694b
DEVICE=enp1s0f0
ONBOOT=yes //原no,改为yes
IPADDR=192.168.177.120 // 新增
GATEWAY=192.168.99.12 // 新增：注意，这个网官“99”是我的路由器的网关，你要修改为你自己的网官
NETMASK=255.255.255.0 // 新增
NM_CONTROLLED=no // 新增
DNS1=8.8.8.8 // 新增
DNS2=8.8.4.4 // 新增

保存以上配置
重起你的网络管理器

 systemctl restart network.service 

ifconfig 查看，已经配置成功

[root@zhangxs network-scripts]# ifconfig
enp1s0f0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.177.120  netmask 255.255.255.0  broadcast 192.168.177.255
        ether f8:a9:63:04:42:7e  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
        device interrupt 18  

ping www.baidu.com   ok配置完成

[root@zhangxs network-scripts]# ping www.baidu.com
PING www.a.shifen.com (14.215.177.38) 56(84) bytes of data.
64 bytes from 14.215.177.38 (14.215.177.38): icmp_seq=1 ttl=53 time=44.7 ms
64 bytes from 14.215.177.38 (14.215.177.38): icmp_seq=2 ttl=53 time=24.9 ms