环境:
OS:Centos 6
1.备份现有repo仓库
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
2.使用阿里云仓库repo
curl -o /etc/yum.repos.d/CentOS-Base.repo https://www.xmpan.com/Centos-6-Vault-Aliyun.repo --insecure
curl http://www.xmpan.com/Centos-6-Vault-Aliyun.repo
#https链接报错就用http
3.更新yum
yum clean all
yum makecache