一、ping不通
1.检查网络
2.修改 resolv.conf
vi /etc/resolv.conf
增加
nameserver 114.114.114.114
3. vmware的检查一下网关
我的ip是192.168.1.7 网关是192.168.1.1
/etc/sysconfig/network-scripts/ifcfg-enoxxx文件修改为
二、yum 下载、安装软件慢问题
1. 备份：备份之前的镜像
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
2.修改
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
3. 处理缓存
yum clean all
yum makecache
yum update