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From a clustered VMM to standalone server RRS feed

  • Question

  • Hi,

    We have a clustered VMM 2016 environment using a clustered SQL database. We would like to upgrade VMM to 2019 and get rid of the VMM and SQL clustering.

    In our test environment we have done a test upgrade but VMM service won’t start with the following error:

    Highly available vmm service cannot be started as standalone vmm service

    Is there any documentation available to destroy the VMM clustering and install a standalone server?


    • Edited by GTJ81 Thursday, April 2, 2020 6:43 AM
    Thursday, April 2, 2020 6:39 AM

All replies

  • Hi,

    You will need to uninstall one node at the time (first passive, then active) and remember to retain the database, as you will most likely get conflicts if you still have the same database in use even on just one cluster node.

    Pretty much as stated in here:
    https://blogs.technet.microsoft.com/virtual-mite/2014/06/02/how-to-move-a-vmm-sql-database/

    The SCVMM servers themselves is not a big thing to reinstall, just make sure you have a backup of your database, and then you can restore it to the new standalone server.

    Best regards,
    Leon


    Blog: https://thesystemcenterblog.com LinkedIn:

    Thursday, April 2, 2020 7:37 AM
  • Hi Leon,

    Thanks you for your reply.

    But that's not going to work. You still need a clustered VMM. I have done the same steps in a test environment, but VMM service does not start. With the error : Highly available vmm service cannot be started as standalone vmm service

    Thursday, April 2, 2020 1:31 PM
  • Ah sorry I misread, I though only the VMM database were clustered, "downgrading" from a cluster to standalone VMM won't work, also the recommended approach is to clean install even though upgrading is fully supported.

    In your case it would probably be best to set up a new server and clean install SCVMM2019, you can do this in steps, add a few hosts at the time.


    Blog: https://thesystemcenterblog.com LinkedIn:

    Thursday, April 2, 2020 1:42 PM