yum [Errno 256] No more mirrors to try 解决方法

输入下面的命令即可解决问题：

yum clean all

yum makecache

[root@localhost yum]# yum update

Loaded plugins: fastestmirror, refresh-packagekit, security

Repository base is listed more than once in the configuration

Repository updates is listed more than once in the configuration

Repository extras is listed more than once in the configuration

Repository centosplus is listed more than once in the configuration

Repository contrib is listed more than once in the configuration

Determining fastest mirrors

epel/metalink                                            |
4.6 kB     00:00    

 * epel: mirrors.yun-idc.com

 * rpmforge: mirrors.neusoft.edu.cn
http://mirrors.163.com/centos/$releasever/os/i386/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found"

Trying other mirror.

Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again

[root@localhost yum]# vi /etc/yum.conf

[root@localhost yum]# yum update -y

Loaded plugins: fastestmirror, refresh-packagekit, security

Repository base is listed more than once in the configuration

Repository updates is listed more than once in the configuration

Repository extras is listed more than once in the configuration

Repository centosplus is listed more than once in the configuration

Repository contrib is listed more than once in the configuration

Loading mirror speeds from cached hostfile

epel/metalink                                            |
4.6 kB     00:00    

 * epel: mirrors.yun-idc.com

 * rpmforge: mirrors.neusoft.edu.cn

base                                                     |
3.7 kB     00:00    

extras                                                   |
3.5 kB     00:00    

rpmforge