topic Update Cluster Dynatrace RHEL 8.4 to RHEL 9.4 in diferents VM in Dynatrace Managed Q&A

Update Cluster Dynatrace RHEL 8.4 to RHEL 9.4 in diferents VM

juanrergis — Mon, 27 Jan 2025 07:59:20 GMT

Hello community, I have a cluster of 3 nodes running RHEL 8.8 and new computers running RHEL9.4. I can migrate to these new ones from the restore procedure from backup, in order to maintain the same IP on each node and at the same time I end up discarding the obsolete nodes.

Re: Update Cluster Dynatrace RHEL 8.4 to RHEL 9.4 in diferents VM

Islam_Zedan — Sat, 25 Jan 2025 22:23:59 GMT

Hello @juanrergis

Yes you can do that. You can take the backup from old servers, and then shutdown them and change the IP addresses for new servers to your IPs, then do the restore. It should work without any issues. And also you can upgrade your old servers directly without the need to backup and restore, you only need to update Dynatrace servers to latest version that support 9.4

Thanks,

Islam

Re: Update Cluster Dynatrace RHEL 8.4 to RHEL 9.4 in diferents VM

mrc15816 — Mon, 27 Jan 2025 01:00:07 GMT

@juanrergis assuming you’ve reviewed the migration documentation, here are a few things to keep in mind. If you restore and backup, you won’t get trace data or metrics with a 1 and 5 minutes resolution interval.

Out of curiosity, are you trying to preserve firewall flows? Personally, I wouldn’t use backup and restore. Instead, I’d add the new nodes and mark the old nodes as read-only. This way, you won’t lose any information. For a short duration of D, you can have different versions again. Please check with the support. I’m risk-averse, and losing that data would be difficult, especially since you can’t even view the historical information.

All the best!

Thanks

Raj