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Patching Systems Easier - Linux / Unix Administration

I would like to minimize downtime for my Solaris9 systems when installing patch cluster. I am thinking about a running a script with following steps: - detaching mirrored root disk (metadetach) - installing patch cluster on the detached disk. - putting back the mirror (attaching back the patched disk to root disk) - rebooting system (resyncing disks) : Problem- which disk will be the master? Should I boot from the second disk? What do you think? Does anyone have experience doing this?...

  1. #1

    Default Patching Systems Easier

    I would like to minimize downtime for my Solaris9 systems when
    installing patch cluster.
    I am thinking about a running a script with following steps:
    - detaching mirrored root disk (metadetach)
    - installing patch cluster on the detached disk.
    - putting back the mirror (attaching back the patched disk to root
    disk)
    - rebooting system (resyncing disks) : Problem- which disk will be the
    master? Should I boot from the second disk?
    What do you think?
    Does anyone have experience doing this?

    martyna.werner@mpls.frb.org Guest

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    Default Re: Patching Systems Easier

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    Dave Guest
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  3. #3

    Default Re: Patching Systems Easier

    Hello Martyna,

    frb.org wrote: 


    Once you have resynced the mirror, there will be no master as such. They
    will both have a copy of the active configuration. If you left the disk
    detached, you could choose which disk to boot from.

    Sun already have a similar framework for this, it is called Live
    Upgrade, I suggest you read up on it;

    http://docs.sun.com/app/docs/doc/817-5768/6ml70g5rj?q=live+upgrade&a=view
     

    I would suggest looking at Live Upgrade for alternate boot environments.
     

    What you propose is overly complicated and would not IMHO make patching
    any easier. Your milage may vary on this.
     

    Yes, but it involved rebooting the system into single user mode after
    pulling out the second disk so that it was physically isolated from the
    system. A luxury many of us doing remote support do not have.

    Kind Regards,

    Nathan Dietsch

    Nathan Guest

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