upgrade from RHEL5 to RHEL5.8

drManhattan · 05-29-2012, 10:20 AM

Hi

How to upgrade RHEL5.0 to RHEL5.8 ?
Is there a procedure for that ?

Best regards

snowday · 05-29-2012, 10:36 AM

Here's some easy instructions: https://access.redhat.com/knowledge/articles/11258

Since it's been over 5 years since RHEL5.0 was released, it might be a good idea to contact redhat.com support for advice with such a big upgrade. I personally upgrade in smaller increments (5.6 to 5.7 to 5.8) so I cannot guarantee going straight from 5.0 to 5.8 will work. Good luck!

drManhattan · 05-29-2012, 03:13 PM

I would like to know what steps are required to upgrade system.
In my example I have to go from RHEL5.0 to 5.8 so these are the steps are predict :
1. download image of each RHEL (5.1,5.2,.....5.8)
2. create repos on my target system with each RHEL version
3. first run `yum install kernel*` to install new kernel if in newer version is required
4. if installation of newer kerenel is not required then just run `yum update` to update all packages installed currently
5. repeat steps 3-4 untill `cat /etc/redhat-release` show RHEL5.8

Please correct if I am wrong.

snowday · 05-29-2012, 03:24 PM

Quote:

Originally Posted by drManhattan

I would like to know what steps are required to upgrade system.
In my example I have to go from RHEL5.0 to 5.8 so these are the steps are predict :
1. download image of each RHEL (5.1,5.2,.....5.8)
2. create repos on my target system with each RHEL version
3. first run `yum install kernel*` to install new kernel if in newer version is required
4. if installation of newer kerenel is not required then just run `yum update` to update all packages installed currently
5. repeat steps 3-4 untill `cat /etc/redhat-release` show RHEL5.8

Please correct if I am wrong.

You are wrong

please read the link I posted above and contact redhat.com if it is not self-explanatory.

chrism01 · 05-29-2012, 07:51 PM

If your system is connected to the internet (specifically rhn), then

1. do backup
2.

Code:

yum update

You only need to create repos if it has no access to RHN. You can still go straight to the latest 5.x as the updates are cumulative.
Other options include RH Proxy or RH Satellite.

Note however that if you want to go to 6.x (currently 6.2) that requires(!) a fresh install.
Upgrading across major version nums is NOT supported by RH.
HTH

drManhattan · 05-30-2012, 02:18 AM

So in my case (having RHEL 5.0 installed) I need to download RHEL5.8 dvd and create repo local from that dvd and then run `yum update` ?

acid_kewpie · 05-30-2012, 02:39 AM

no, you just need to run "yum update". That's it.

drManhattan · 05-30-2012, 02:51 AM

My server doesn't have access to internet.

acid_kewpie · 05-30-2012, 02:54 AM

Right, so then yes, get the 5.8 iso and make your own yum repo outside of RHN

chrism01 · 05-30-2012, 07:40 PM

In that case, you may find this useful https://code.google.com/p/iredmail/w...Yum_Repository

drManhattan · 05-31-2012, 01:50 AM

Hi

I was upgrading CENTOS4.0 to 4.9 and observed that there is a difference between upgrade and update.
Upgrade :
-------------
http://vault.centos.org/4.9/os/x86_64/

Update :
----------
http://vault.centos.org/4.9/updates/x86_64/

Firstly I upgraded CENTOS4.0 with above repo "upgrade section" and then i updated already upgraded 4.9 version. Without this update `cat /etc/redhat-release` showed 4.8.

!!!
Summarizing, to upgrade/update system there is procedure `yum update` but order of using repo and repo structure is importand.