Documentation - Upgrade from IDS 12 to 14 in primary/HDR/RSS configuration
Sh To asked how to upgrade a primary/HDR/RSS cluster from IDS 12 to 14. Art Kagel first said secondaries must be restored from the primary, but Andreas Legner corrected that, for a full cluster downtime, secondaries need no rebuild when upgrading to 14.10.xC4W1 or later. Paul Watson confirmed shutting down, upgrading and restarting everything worked. Art conceded he was thinking of rolling upgrades.
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Hello, I looked for information about upgrading primary/hdr/rss from IDS12 to 14 But I only found for IDS11 https://www.ibm.com/support/pages/upgrading-high-availability-data-replication-hdr-pair Do I have to go through the same steps for 12 to 14? Also, Step 4: I could understand that it's necessary to do a L0 backup close to the upgrade, but why just after it and before connecting the HDR? If it doesn't work, I won't restore from the fresh upgrade but from the last L0 before the upgrade. Step 7: If I choose to not bring the primary to standard mode, so I don't need to do a physical restore, isn't it? Thanks ------------------------------ Sh To ------------------------------ #Informix
More or less, nothing has changed. A couple of comments and answers to your questions:
You can in v14.10 upgrade an hdr or rss secondary by a single minor version without a restore. Going from 12.10 to 14.10 requires that the secondaries be restored from the primary.
The page you cited leaves out the final step, running the onmode -d secondary on the secondary after the restore. (Do NOT bring the secondary to online status.)
Optionally you can use ifxclone to create the new upgraded secondary instead of a manual archive & restore.
You need the archive after the upgrade in order to restore to the secondary with the new version!
You should indeed take an archive before upgrading also in case the upgrade goes horribly wrong.
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Art S. Kagel, President and Principal Consultant
ASK Database Management Corp.
www.askdbmgt.com
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Art, I need to politely disagree ;-) As long as you don't want to perform so called 'rolling upgrade' of your cluster, where one server always would remain up, you would not have to recreate your secondaries when upgrading from [11.50,] 11.70, 12.10 or a previous 14.10. to 14.10.xC4W1 or newer. Conversion Support for HDR and RSS Secondary Server -> Migrating an offline cluster to a new major version and High-availability cluster migration BR, Andreas ------------------------------ Andreas Legner ------------------------------
Agree with Andreas, the last 12 to 14 I did - a couple of months ago - shutdown everything, upgrade everything, start everything - just works. I did take down connection manager for the duration as well though. If you have enough servers in the cluster you can leave one un-upgraded for fail back. Cheers Paul Paul Watson Oninit LLC +1-913-387-7529 www.oninit.com Oninit® is a registered trademark of Oninit LLC
Thanks Andreas. I was thinking of the ruling upgrade feature. Art ------------------------------ Art S. Kagel, President and Principal Consultant ASK Database Management Corp. www.askdbmgt.com ------------------------------
Thank you all ------------------------------ Sh To ------------------------------