centos6 repo update for the yum issue

yum 安装时报错：

YumRepo Error: All mirror URLs are not using ftp, http[s] or file.YumRepo Error: All mirror URLs are not using ftp, http[s] or file.

centos6 repo源一键修复:

sed -i "s|enabled=1|enabled=0|g" /etc/yum/pluginconf.d/fastestmirror.conf
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
curl -o /etc/yum.repos.d/CentOS-Base.repo https://www.xmpan.com/Centos-6-Vault-Aliyun.repo 
yum clean all
yum makecache