1.创建ifcfg-eth0
touch /etc/sysconfig/network-scripts/ifcfg-eth0
2.配置ifcfg-eth0
DEVICE=eth0 HWADDR=00:0c:29:87:cc:be TYPE=Ethernet UUID=2728d81e-cbcb-47f2-9f29-20c5a4c5b588 ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=none DNS1=180.76.76.76 IPV6INIT=no USERCTL=no IPADDR=172.16.21.222 NETMASK=255.255.255.0 GATEWAY=172.16.21.1