Hi,

maybe a stupid one. Just want to make sure that nothing goes wrong. We 

plan to make a rolling upgrade of our landscape going to 3.5.1 in december. 

So we always need some hypervisor nodes up and running during the 

process.  

Looking at older posts I assume that upgrading the engine should be

sufficient, while hypervisor nodes with vdsm 4.14.17 (from 3.4 repos) and

the active VMs keep on running. The start of the engine after the upgrade

should catch up and resync all states.

Afterwards I clean hypervisor hosts one by one and clean/reinstall it into 

the cluster?

Thanks in advance.

Markus

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