Upgrade Redhat

[sameer-hcet]

Hi All,

Can we upgrade RHEL 4.8 to RHEL 5.5?

I f it is possible then please tell me how?

and give me relevent steps.


Regards,
Sameer

[Irithori]

Depends in what condition that machine is.
- Does it have a valid subscription to rhn?
- Does it have 3rd_party RPMs installed?
- Does it have self-compiled programs?
- Does the backup work?
- Does the restore work?
- How long can the machine be taken offline, in case something goes wrong?
- Does any of the release notes affect your applications and/or data?
redhat.com | Red Hat Enterprise Linux Update Release

After you cleared those questions for yourself, you will have to do a fresh install.
There is no direct upgrade path between major versions of redhat.

That also means, that the versions of the applications (apache, mysql, php,perl, etc ) have changed.
You need to judge how this affects the functionality of the software you are using on that box.

[sameer-hcet]

Hi,

I have installed linux 4.8 then my project related application is running on that server.

So, we need to upgrade that machine from RHEL 5.5.

1)If you have any idea 3rd party RPMs.
2)I can offline the machine atleast 2 hour.
3)please tell me we can upgrade or not.


Actually, I am not able to understand.

If it is possible then please tell me relevent steps

[coopstah13]

as irithori said, you can't do a straight upgrade to RHEL5 from RHEL4

you will need to backup all important data, application configurations, etc because you need to do a fresh install which will require formatting the disk