[PVE-User] In-place upgrade and clusters...

[Marco Gaiarin]

Mandi! Mark Schouten
  In chel di` si favelave...

> I’ve been able to migrate VM’s between upgraded and ‘old’ nodes. Not all VM’s survived it without crashing, but I’m not sure what caused it (might be Ceph client stuff as well).

So seems that, in upgrading a cluster:

a) moving VMs/CTs from 4.X to 5.X is supported, as documented in the
  wiki

b) moving VMs/CTs from 5.X and 4.X works with some troubles.


So, probably the best upgrade path will be:

1) move all the VMs/CTs out of a node (or, if possible, stop them).

2) upgrade the node from 4.X to 5.X, reboot (repeat as needed)

3) move all the VMs/CTs in a node to the upgraded node(s), repeat step
  2).


Right?

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