在xenserver6.5使用yum 安装东西时提示如下错误：

Could not retrieve mirrorlist http://updates.vmd.citrix.com/XenServer/6.2.0/domain0/mirrorlist error was
[Errno 14] HTTP Error 404: Not Found
Cannot find a valid baseurl for repo: citrix

Could not retrieve mirrorlist http://updates.vmd.citrix.com/XenServer/6.5.0/domain0/mirrorlist error was
[Errno 14] HTTP Error 404: Not Found
Cannot find a valid baseurl for repo: citrix

解决方法：

vi/etc/yum.repos.d/Citrix.repo

将“enabled = 1”更改为“enabled = 0”来禁用Citrix repo，然后重新使用yum安装即可。