CentOS Set Static IP

1. Modify the NIC configuration edit: Vi/etc/sysconfig/network-scripts/ifcfg-eth0

Device=eth0 #描述网卡对应的设备别名, for example, in Ifcfg-eth0 file it is eth0

Bootproto=static #设置网卡获得ip地址的方式, the possible options are static,dhcp or BOOTP, corresponding to statically specified IP addresses, IP addresses obtained through the DHCP protocol, IP addresses obtained through the BOOTP protocol
broadcast=192.168.0.255 #对应的子网广播地址
HWADDR=00:07:E9:05:E8:B4 #对应的网卡物理地址

ipaddr=12.168.0.33 #如果设置网卡获得 IP address is statically specified, this field specifies the IP address of the NIC
netmask=255.255.255.0 #网卡对应的网络掩码
network=192.168.0.0 #网卡对应的网络地址

2. Modify the Gateway Configuration

EDIT: Vi/etc/sysconfig/network modified as follows:

　　

Networking=yes (Indicates whether the system uses a network and is generally set to Yes.) If set to no, the network cannot be used, and many system services programs will not start.
Hostname=centos (Set the hostname of this machine, the host name set here should correspond to the hostname set in/etc/hosts)
gateway=192.168.0.1 (Sets the IP address of the gateway for the native connection. )

　I'm editing this here. The first three items are already default, so only the gateway is added.

3. Modify the DNS configuration

EDIT: vi/etc/resolv.conf modified as follows:

NameServer is the DNS server IP address, the first is the preferred one, the second is the standby.

4. Restart the Network Service

Execute command:

Service network restart or/etc/init.d/network restart

CentOS Set Static IP