Linux upgrade procedure

Posted on 2007-07-25
Last Modified: 2013-12-16
I have a Dell 2950 (actually have 3-2950's and 2-6850's but am starting on this 1-2950) and have installed RHEL4 2.6.9-5-EL-smp-i686.
Documentation indicates that Oracle will require at least RHEL4 2.6.9-5.0.5 EL or higher.
What are all the steps required to do this upgrade?

I will then have the need for telnet to be available.  What steps do I take to make that happen?
All assistance is much appreciated.
Question by:slcoit
    LVL 14

    Expert Comment

    by:Deepak Kosaraju
    LVL 43

    Accepted Solution

    > What are all the steps required to do this upgrade?
    just run
    and it will take care of updating Your system to newest RHEL4 version.
    LVL 1

    Expert Comment

    wrt "I will need telnet available":

    telnet is an unsecure protocol for remote login (user id's and passwords are sent in the clear), so I strongly recommend using ssh instead.  There is really no situation that you need to use telnet instead of ssh..there are ssh clients for every platform.  

    The SSH in RHEL4 has host access controls available through the librwap library (and configured through /etc/hosts.allow and /etc/hosts.deny)

    Author Comment

    Actual answer to the first part of my question would be to go to RHN and search for kernel.
    Once the list comes up, find the particular kernel for this system and for the given requirements and then download to the system and then do a 'rpm -ivh kernel-name'.
    When you boot, it will default to the new kernel but you will have the option to select the old kernel if you desire.
    Once you are happy with the new kernel, you can do a 'rpm -e old-kernel-name' to remove the previous version.

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