Setting up repositories
not using ftp, http, or file for repos, skipping - Null is not a valid release or hasnt been released yet
Cannot find a valid baseurl for repo: updates
Error: Cannot find a valid baseurl for repo: updates
The error message clearly states that there is something wrong with the updates repository and that no valid URL for this repository can be found. Are you sure the same information is in the /etc/yum.conf file? If not you could run:
expand-template /etc/yum.conf
again, this should update the yum configuration file to the latest settings in the configuration database.
[root ~]# db yum_repositories show updates
updates=repository
BaseURL=http://mirror.centos.org/centos/4/updates/$basearch
EnableGroups=no
GPGCheck=yes
MirrorList=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
Name=CentOS - updates
Visible=yes
status=enabled
[root ~]#
As nothing looks wrong to me too, it might have been that the centos server had a hick-up or a failure. Have you tried again in the mean time?
Otherwise adding
-d 10
to the yum command might shed some light on what might be going wrong as that will instruct yum to ouptut debug information.
I SEE NOTHING WRONG WITH THIS:
By the way: do not use capitals as this is used to scream and we don't want to treat each other like this I guess.