本文介绍了解决使用YUM安装过程中出现的错误方法。针对Repository配置重复及HTTP请求返回404 Not Found等问题，提供了有效的解决方案链接。
报错内容 yum insall xxx
Loaded plugins: fastestmirror
Setting up Install Process
Repository epel is listed more than once in the configuration
Loading mirror speeds from cached hostfile
http://mirrors.163.com/centos/6/os/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found"
Trying other mirror.
To address this issue please refer to the below knowledge base article
https://access.redhat.com/articles/1320623
If above article doesn't help to resolve this issue please open a ticket with Red Hat Support.
解决方法（已测试有效）
https://blog.youkuaiyun.com/qq_37746897/article/details/110759717
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