[PVE-User] pve4.2 join pve3.2 cluster failure

[Lindsay Mathieson]

On 17 May 2016 at 15:22, haoyun <haoyun-kgq at 163.com> wrote:
> what risk from pve3.2 upgrade to pve4.2?
> all vm has service in running !


Its a non-trivial upgrade, but if you follow the guide here *to the
letter* :) it should be ok. Numerous people have done it with no
problems.

https://pve.proxmox.com/wiki/Upgrade_from_3.x_to_4.x_%28Debian_wheezy_to_jessie%29

It does involve extended downtime for the entire cluster.

-- 
Lindsay