Hello,
is there any requirement to update at latest 3.6.x version the engine
before upgrading to 4.0? Or could I have for example 3.6.3 and directly
upgrade to 4.0?
Do you test upgrade only from latest previous version or what?
And what about nodes in case they start as plain CentOS 7.x in 3.6.x?
Thanks,
Gianluca