[CentOS-mirror] YUM UPDATE

Tue Apr 25 22:21:34 UTC 2017
Anssi Johansson <avij at centosproject.org>

26.4.2017, 1.17, Datacenter Plus kirjoitti:
> [root at data ~]# yum update
> Loaded plugins: fastestmirror, security
> Loading mirror speeds from cached hostfile
> YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
>  Eg. Invalid release/
> removing mirrorlist with no valid mirrors:
> /var/cache/yum/base/mirrorlist.txt
> Error: Cannot find a valid baseurl for repo: base
> [root at data ~]#

You seem to be using CentOS 5, which went EOL at the end of March. 
Please migrate to a newer release, such as CentOS 6, or preferably 
CentOS 7. There will be no more updates published for CentOS 5.

If you have further concerns about this, please use the main CentOS 
mailing list, https://lists.centos.org/mailman/listinfo/centos