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I would appreciate some help from someone experienced here.
We are upgrading our Qlik Sense environment to September 2018 from April 2018.
What are the things we should consider?
What should I back-up before upgrading? Do I have to back-up the repository database, Qlik Sense apps, QVD files?
Is there any type of back-up service exe that would do this for me for Qlik? If not, just want to know what to back-up.
Do I have to migrate the Qlik Sense apps manually as part of the upgrade?
Thank you, I am new to this process so want to ensure I do not mess up.
Are you running in a VM? Are you running a cluster or single instance? In any case, I always get the devops folks to take a snapshot of the VM before I begin upgrading. That way, I can always have them roll it back to a functional state.
For a multi-node setup you will have to ask someone who know what they are doing. I've only ever worked with single nodes (hopefully that will change soon). In the various upgrade documentation there should be some resources on how to upgrade a multinode system.
Upgrading a multi-node environment is not a lot more complicated than upgrading a single node. It's recommended to turn off every Qlik Sense services on every node and first starting to upgrade the central node. Once the central node is upgraded you can upgrade the rim nodes one by one (does not matter the order)
Otherwise, regarding best practices, I highly recommend you to take a backup of your Qlik Sense environment (Files, database and certificates)
Below are two links explaining how to do that (Make sure you select the correct Qlik Sense version you are currently running top right of the page so that you have access to the relevant information)
Additionally, if you are running Qlik Sense on a virtual machine, you can even take a Virtual Machine Snapshot which will make the rollback process easier and faster if needed.
Regarding the process to upgrade, all of it is documented on the links below. Depending on which version you are upgrading from, the process differs a little bit:
Finally, I would add that testing the upgrade in a TEST/DEV environment prior to upgrading your Production is a best practice.
I ran about a year ago a Support TechSpert Thursday on that topic. You can click here to watch the recording.
Hope this helps!