centos 网络配置

1、vi /etc/sysconfig/network

NETWORKING=yes

NETWORKING_IPV6=no

HOSTNAME=centos200

GATEWAY=192.168.1.1

NETWORKING=yes

2、查看网卡信息

vi /etc/udev/rules.d/70-persistent-net.rules 把网卡地址拷贝出来（name=eth0的网卡） eth1

3、编辑tcp/ip信息：网卡地址， ip地址，网关地址，子网掩码

vi /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE="eth0"

NM_CONTROLLED="yes"

ONBOOT="yes" //开机自动连接

HWADDR="00:0C:29:3C:9C:C3"

TYPE="Ethernet"

BOOTPROTO="dhcp"

PREFIX=24

GATEWAY=192.168.3.1

DEFROUTE=yes

IPV4_FAILURE_FATAL=yes

IPV6INIT=no

NAME="System eth0"

UUID="63fb6acb-4fd1-4695-9faa-a3cb97c61f6e"

IPADDR=172.16.3.57

NETMASK=255.255.255.223

GATEWAY=172.16.3.33

DNS1=172.16.0.3

DNS2=172.16.0.4

4、重启network

service network restart或者 /etc/init.d/network restart