Dear LQ Member,

Our system is using RHEL 4.0. And we would like to upgrade to RHEL 4.7.
Since Red Hat Network is not free anymore, that leave me no choice to reconfigure my system to Centos and use yum to upgrade the system.

However I am facing a problem with yum. My yum version is yum-2.4.2-0.4.el4.rf.
And it seemed that yum has some kind of bug regarding the header when yum behind a firewall that has somekind of antivirus installed.

Upgrading to yum latest version is not an option either since I have to install a lot of packages prior installing the yum version 3.x.

So that left me no choice to create a local yum repository.

My question is:
1. Can I use the centos 4.7 iso as a local yum repository?
If the answer is yes, then how?

2. How can I fix the yum 2.4 issue without disabling the antivirus in our firewall?

3. Can I redirect the up2date to point to centos instead of Red Hat Network?

Kind Regards,
-erwin

I would defintely not suggest that you try doing what you are doing, unless you really know what you are doing! Can you not do a fresh install of CentOS?

The reason I am saying this is because CentOS tries to keep up to date with RedHat, but it ain't perfect!

I agree with irishbitte...

What you are trying to do can break you system to the point where it will no longer work.

What I suggest is to do a fresh CentOS install on another machine, and then migrate all files/services over to the new machine. This is the "slower" solution, but it will ensure that your system stays in tact.

-C

I'd love to do that as well. However there are some application installed in the server. So I cannot just do a fresh install.

So my only option is to upgrade through the yum install.

By the way, thank you for the reply.

Regards,
-erwin

No Problem.

What I meant to say is do a fresh install on another machine .

Then (slowly) migrate to the other machine...

This way you have a way to "roll back" if something should go wrong.

-C

Yes, you must understand that you cannot just change the repositories yum operates from! the system and security repos will be unique to redhat, and will have different gpg keys for example! Not to mention the numerous tweaks Cent have done to their versions. Be very careful!

You say here that there are apps running on the server. I promise you, if you do what you are planning on a production machine you'll lose more than the machine, probably your job!

Yes, you are right. Fortunatelly, the server is only a test server.
I thought, centos is 100% compatible with Red Hat
If they tweak it, meaning that Centos is not 100% compatible with Red Hat anymore, right?

Thank's for the reply.
-erwin

Yes and no.

Here is a snip from their wiki...

Basically they only change the logo.

You should take a look at their wiki if you have any more concerns...

http://wiki.centos.org/FAQ/General

FWIW...

At my company...we develop on Centos...when it's ready; we deploy on our RHEL machines...

-C

You are quite right custangro, but it's still not the same as changing repositories from RH to Cent!

Hi All,

Thank you for all the response. As per conclusion, I will reinstall the test server with the Centos 4.7.

Regards,
-erwin