Upgrade from 3.4 to current version

[Slodziomus]

Hi,
We have 13 hosts with proxmox 3.4 (1 cluster). We want update to current version 5.
I guess that we should:
1. make install proxmox 4 and restore vm's and containers, convert containers to new format.
2. upgrade in-place to 5 - (is it safe?).
What is preferred upgrade path?
Maybe is possible to restore VM's directly from 3.4 to 5?
I am asking for your opinions, suggestions.
Regards,
Tom

 

[janos]

Hi,

Do you have OpenVZ or KVM vms?

 

[Slodziomus]

Hi, we have OpenVZ containers and Qemu VMs.
Tom

 

[janos]

KVM is easy, basically you need to migrate HDD image (qcow2, raw, or whatever you using) and its config. But for OpenVZ, you need to convert it to LXC, with vzdump and restore.

 

[Slodziomus]

So, I will try to import VMs and convert OpenVZ directly in new proxmox 5 cluster.

 

[janos]

Basically yes. I don't think you can upgrade it directly to 5, because old cluster working on a different way what 4/5 using. And fresh install always better.

 

[Slodziomus]

Yes, we are going to make a fresh install proxmox 5 - new cluster. Then we'll import VMs and try to restore/convert containers (OpenVZ) from old cluster (3.4).