Linux centos 6 yum 错误

Loaded plugins: fastestmirror, refresh-packagekit, security
Repository base is listed more than once in the configuration
Loading mirror speeds from cached hostfile
YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
Eg. Invalid release/repo/arch combination/
removing mirrorlist with no valid mirrors: /var/cache/yum/x86_64/6/extras/mirrorlist.txt
Error: Cannot find a valid baseurl for repo: extras

 

解决：https://blog.csdn.net/h952520296/article/details/110541018