1、修改网卡ens33
#cd /etc/sysconfig/network-scripts/
#vi ifcfg-ens33
IPADDR=192.168.244.130
PREFIXO=24
GATEWAY=192.168.244.2
DNS1=8.8.8.8
DNS2=61.139.2.69
2、#service network restart
或者
#systemctl restart network
#ping www.baidu.com
#yum update
按y
3、安装epel源
#yum install epel-release