centos 6
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-6.repo
安装完成进项yum 安装服务 如： yum -y install telnet会出现一系列问题建议修改
执行：
sed -i 's#http://mirrors.aliyun.com/centos/#http://mirrors.aliyun.com/centos-vault/centos/#' CentOS-Base.repo
sed -i 's#http://mirrors.aliyuncs.com/centos/#http://mirrors.aliyun.com/centos-vault/centos/#' CentOS-Base.repo
sed -i 's#http://mirrors.cloud.aliyuncs.com/centos/#http://mirrors.aliyun.com/centos-vault/centos/#' CentOS-Base.repo
2.epel.repo文件中的
enabled=1修改为enabled=0
然后yum 进项安装软件如 yum -y install telnet
