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Can we upgrade straightly from RHEL 4 to RHEL 5.3

 
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senthil_kumar_1
Super Advisor

Can we upgrade straightly from RHEL 4 to RHEL 5.3

Hi All,

1)Is it possible upgrading from RHEL 4 to RHEL 5.3?

2)If yes , what is the procedure?

3)If not, Reasons?

5 REPLIES
Ivan Ferreira
Honored Contributor
Solution

Re: Can we upgrade straightly from RHEL 4 to RHEL 5.3

Plese check the official documentation in this link:

http://www.centos.org/docs/5/html/5.2/Installation_Guide/ch23s01.html
Por que hacerlo dificil si es posible hacerlo facil? - Why do it the hard way, when you can do it the easy way?
Steven E. Protter
Exalted Contributor

Re: Can we upgrade straightly from RHEL 4 to RHEL 5.3

Shalom,

The documents say this upgrade can be done.

The procedure is pretty simple, you just boot the system off the new OS media and proceed through the GUI.

In practice, I found the end result very unsatisfying. I could not update the systems with yum. There was a whole host of troubles, that led me to go back and do a cold install from scratch.

SEP
102 from Linux Mount Olympus with a Penguin on top.
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
senthil_kumar_1
Super Advisor

Re: Can we upgrade straightly from RHEL 4 to RHEL 5.3

Hi Steven,

So you are strictly not recommending to go for OS upgrade, am I correct?
Steven E. Protter
Exalted Contributor

Re: Can we upgrade straightly from RHEL 4 to RHEL 5.3

Yes,

The upgrade blew up a half dozen systems in my home based lab, forcing me to do double work.

I tried for 4 hours to get a system working after the upgrade with a simple yum list command and failed.

For me this is like upgrade-ux on HP-UX, simply not worth the trouble.

I've done it and had it work, but not with enough reliability the be comfortable.

SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
Randy Jones_3
Trusted Contributor

Re: Can we upgrade straightly from RHEL 4 to RHEL 5.3

I just did an upgrade from RHEL4.7 to RHEL 5.4 two days ago. Boot from the installation media and at the initial prompt use the keyword "upgradeany". It should be downhill from there.

Be aware that an upgrade will run longer than an install. If you use the DVD image you can get it started and walk away. (My last upgrade ran for about six hours but I think a SAN problem slowed my writes down to a crawl.)