It's possible to import nodes form different Opennebula system?

Community Support
1

Hello.
I want to “safe” migrate from Opennebula4.14 to Opennebula5. It’s possible to import nodes with VM one by one from Opennebula 4.14 to Opennebula 5?
I have tried it, but VM on imported nodes displayed as zombie VM. (I have copied new ssh key, and upgraded package opennebula-nodes)

Update:
I did it in laboratory:
I have had Frontend Opennebula + Node version 14.4
… created VM (one-1)
… deployed New Frontend Opennebula
… added new ssh keys to Node, and installed opennebula-node from 5.0 repository
… added node to Opennebula 5
… saved vm’s configuration in xml file on the node via virsh
… changed vm’s name from one-1 to vm-one-1
… shutdown vm
… create vm via virsh create
And I was able to import vm from wild.

Unfortunately, you can’t do migrate, undeploy, and other useful operations for imported vm’s.

2

Hi,

What you are trying to do will not work, OpenNebula is not prepared for that scenario.

The upgrade procedure is described here:
http://docs.opennebula.org/5.0/intro_release_notes/upgrades/upgrade_414.html

3

It can be “soft” scenario for upgrade. You prepare new ecosystem and migrate there, with rollback chance.