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  • 1.  Uninstalling HACMP

    Posted Sat January 23, 2010 05:25 PM

    Originally posted by: GurpreetSingh


    Hi Friends,

    We have a server with node cluster. Resource group is active on primary node and offline on 2nd node. We use IPAT with aliases. My problem is that I have uninstall the cluster and configure the system as standalone system with same service IP.

    Following is the configuration.

    oslevel -s
    5300-08-05-0846

    HAcmp version 5.4 SP4

    Application : SAP

    Ifixes :

    ID STATE LABEL INSTALL TIME ABSTRACT
    === ===== ========== ================== ======================================
    1 S IZ42361SP5 09/26/09 07:06:19 iFix for IZ42361
    2 S 53_8_5_tli 09/26/09 07:07:08 libtli.a workaround for 5.3 TL08 Sp05
    3 S IZ32169 09/26/09 07:48:18 Ifix for apar IZ32169(PowerHA 541 SP4)
    4 S IZ39386 09/26/09 07:48:41 INCORRECT ERROR BY START_SERVER
    5 S IZ38630 09/26/09 07:49:04 EVENT FAILS WHEN CLUSTER SVCS STOPPED
    6 S IZ37919 09/26/09 07:49:30 IZ37919 IZ37462 IZ31367 HA541 SP4

    How should I proceed?

    I have chalked out the following plan

    1) Stop the Cluster on both the nodes.
    2) *Remove the cluster configuration on both the nodes :

    Smity hacmp > Extended Configuration > Extended Topology Configuration
    > Configure an HACMP Cluster >Remove an HACMP Cluster
    3) Uninstalling the cluster

    smitty install
    Software Maintenance and Utilities
    Remove Installed Software
    F4
    and select all HACMP related software (look for cluster)
    4) Configure the etherchannel with service IP as in normal standalone system
    5) Set autovaryon on all vg's to yes:

    chvg -an vgname (to be Auto Varyon after system reboot)

    6) Set automount on all filesystem to yes, so that filesystem get mounted after reboot:

    chfs -A yes /filesystem

    Another question that I have is, do i have to remove the ifixes before unistalling the cluster ?

    I have never done the uninstallation of hacmp and I am bit tense as its one of our production system. Please suggest the correct steps for uninstalling the HACMP and running the system as standalone server serving through service ip. Its bit urgent thats why I am posting in all forums... sorry for this..

    Thanks & Regards,
    Gurpreet Singh
    #AIX-Forum


  • 2.  Re: Uninstalling HACMP

    Posted Sat January 23, 2010 06:59 PM

    Originally posted by: Najam Kazi


    Hi Gurpreet,
    For same situation as yours - I did what you plan to do. The procedure you have looks great, don't worry about the ifix.
    Infact it doesn't matter, even if you leave the cluster filesets as is. They will reside like other filesets that exists in AIX.
    Please also remove the hostnames of _boot from /etc/hosts and /usr/es/sbin/cluster/netmon.cf incase you use the same ip (with different ip)few months later.

    Najam Kazi
    #AIX-Forum


  • 3.  Re: Uninstalling HACMP

    Posted Mon January 25, 2010 04:53 AM

    Originally posted by: GurpreetSingh


    Thanks! Nazam, I Executed the plan today everything went fine. Learning is that we have to remove the hacmp depended i-fixes :). Thanks! for reply.

    Cheers :)
    #AIX-Forum