I had an issue this morning that seems to be too big of a coincidence to be an accident.
We have Test and Production virtual machines in the same resource group, as well as other VM's and resources for different departments.
This morning I upgraded our Test virtual machine to a higher level server, and not 1 or 2 minutes later I start getting emails our production server is down.
I instantly panic and make sure I didn't upgrade the wrong server on a Monday morning before I consumed enough caffeine to be fully awake. Luckily, I still had the page open on Azure and I upgraded the correct VM, but it seems these two events have to be related as our production server hasn't had a problem in months.
Do changes to 1 VM affect an entire resource group? If yes I will have to do changes to Test during our upgrade cycles.
No, upgrading (what this even means? changing sku?) a vm doesnt affect any other resources except the VM itself. same holds for almost any other resource.
restarting\shutting down\changing sku on one vm doesnt affect other vms.