参考:http://jingyan.baidu.com/article/359911f57ca21357fe0306d8.html
cd /etc/sysconfig/network-scripts/
ls
vim ifcfg-ens33
NAME="ens33"
UUID="85084266-35b1-4706-8db6-cdb8a7258a29"
IPADDR0=192.168.1.73
PREFIX0=24
GATEWAY0=192.168.1.1
DNS1=202.100.96.68
DEVICE="ens33"
ONBOOT="yes"
service network restart