yum安装程序报错：
Loaded plugins: fastestmirror
Setting up Update Process
Determining fastest mirrors
Could not retrieve mirrorlist http://yum.wsd.com/index.php?release=1.2&arch=x86_64&repo=migsrv error was
14: PYCURL ERROR 22 - "The requested URL returned error: 404"
Error: Cannot find a valid baseurl for repo: migsrv
解决办法：删除migsrv.repo文件
rm -rf /etc/yum.repos.d/migsrv.repo