centos 之静态IP

用虚拟机，家里公司的ip老是改变，DHCP当然就是这样，为了好一点，我只能改为静态ip了。

1、打开配置文件

vi /etc/sysconfig/network-script/ifcfg-eno16777736

2、修改参数

BOOTPROTO=static
IPADDR=192.168.1.121
ONBOOT=yes
GATEWAY=192.168.1.1
NETMASK=255.255.255.0

BOOTPROTO将DHCP改成static，DHCP是动态分配 GATEWAY是网关 NETMASK是子网掩码 ONBOOT=yes是开机启动配置 IPADDR是静态IP的地址

3、重启网络服务

service network restart

看见OK或确定表示成功

4、查看IP

ifconfig

结果如下

eno16777736: flags=4163  mtu 1500
        inet 192.168.1.121  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::20c:29ff:fe7a:31d9  prefixlen 64  scopeid 0x20
        ether 00:0c:29:7a:31:d9  txqueuelen 1000  (Ethernet)
        RX packets 154874  bytes 220585196 (210.3 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 13183  bytes 1516722 (1.4 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10
        loop  txqueuelen 0  (Local Loopback)
        RX packets 53210  bytes 4446880 (4.2 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 53210  bytes 4446880 (4.2 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0