Hi Fatih. Yes, it's possible to upgrade the VM-Series in a VMSS. You will need to update the template that builds the FW/VM-Series for your scale out events. Once that is updated, you can remove one old FW at a time and let the template build out the new. If you don't update the template, your old version of PAN-OS would get deployed on the next scale out event.
Thanks for feedback. I forgot to mention that the deployment is done through Panorama Orchestration.
So, if I change the version on the deployment configuration on Panorama,
I'll test it in my lab environment. If you have information during this time, I'lll be glad 🙂
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