Yum报错[Errno
14] PYCURL ERROR 22 - "The requested URL returned error: 404"
解决办法：
1、下载CentOS6-Base-163.repo
http://mirrors.163.com/.help/centos.html
2、替换/etc/yum.repos.d下的CentOS-Base.repo文件
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
mv CentOS6-Base-163.repo /etc/yum.repos.d/CentOS-Base.repo
3、yum makecache