02-20-2021 12:45 AM
Upgrading from UCCX 12.0 to 12.5SU1. The switch version on the HA server is taking nearly 3 hours. Did anyone experience it too? UCCX Primary node switched version in 1 hour.
Solved! Go to Solution.
02-20-2021 02:13 AM
Update.. UCCX2 upgrade failed. Lost UCCX2 server. Rebuilding it now.
02-20-2021 02:13 AM
Update.. UCCX2 upgrade failed. Lost UCCX2 server. Rebuilding it now.
02-20-2021 11:17 AM
Any lessons learned from losing your subscriber server? For example, anything that's important to do (or not to do) during the upgrade?
Hope your recovery goes well.
02-22-2021 07:15 AM
Perform a DRS backup prior to the upgrade. I have found it a good practice to clone the VM as well. Especially with a Publisher node.
DO NOT TAKE A SNAPSHOT.
You will need to shut down the VM to clone it via CLI.
Navigate to directory where application is, create a Backup folder mkdir Backup
For example /vmfs/volumes/DataStore1/MRAexpressway-C
cp * /vmfs/volumes/DataStore1/Backup
A few days after the successful upgrade delete the clone
02-22-2021 08:32 AM
You can also clone the VM from the vSphere UI. That's what we normally do for all the VMs in a cluster before we upgrade it.
02-22-2021 10:00 AM
@TomMar1 wrote:...DO NOT TAKE A SNAPSHOT....
I know that snapshots can cause performance issues (so you shouldn't leave them in place long term) and if you revert a snapshot of running servers you're asking for DB weirdness. However, do you know if there's any reason snapshots wouldn't work for a short term rollback option if you did this:
02-22-2021 10:40 AM
I never use Snapshots, we have even changed advanced settings on the VMs so that it’s not possible to do a snapshot. I don’t know if I see your value point in doing that outline? If you do a shutdown of the VM to create the snapshot what gain would that have compared to doing a clone? For both you would have the VM in shutdown state.
02-22-2021 11:53 AM
@Roger Kallberg wrote:I never use Snapshots, we have even changed advanced settings on the VMs so that it’s not possible to do a snapshot. I don’t know if I see your value point in doing that outline? If you do a shutdown of the VM to create the snapshot what gain would that have compared to doing a clone? For both you would have the VM in shutdown state.
I was primarily just thinking out loud. The only minor benefits to snapshots would be the speed with which you can create them and revert to them. I agree though, the downsides of snapshots (that @TomMar1 and you point out) far outweigh these minor benefits.
02-22-2021 10:58 AM
"
VMware snapshots are not supported in UC applications. Snapshots cause all types of latency and voice-quality issues. They also cause disk-drive space issues, CPU spikes, and memory utilization issues in UC applications.
When you troubleshoot any voice-quality or CPU/memory issues on a UC application that is supported on a VMware platform, the first thing to check is the presence of snapshots on the system."
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