I just booted up a Centos VM it hadn't been used for around 3 months and was trying to install Docker. The VM would throw this and not install items.
[root@dataserver1 ~]# yum install docker
Loaded plugins: fastestmirror, langpacks
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
http://mirror.aarnet.edu.au/pub/centos/7.3.1611/os/x86_64/repodata/repomd.xml: [Errno 14] HTTP 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 create a bug on https://bugs.centos.org/
http://mirror.internode.on.net/pub/centos/7.3.1611/os/x86_64/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
Trying other mirror.
It's a simple fix simply execute
yum clean all
yum makecache fast
It will rebuild your repo cache and have proper details for latest repo mirrors
See ya round
Peter
