[PVE-User] pve5to6 : FAIL: Corosync transport explicitly set to 'udpu' instead of implicit default!

[Lindsay Mathieson]

Thanks, that did the trick, with some sweaty moments :) cluster all updated
to corosync 3.0 and healthy.

On Fri, 6 Dec 2019 at 15:51, Thomas Lamprecht <t.lamprecht at proxmox.com>
wrote:

> On 12/6/19 1:31 AM, Lindsay Mathieson wrote:
> > As per the subject, I have the error : "FAIL: Corosync transport
> explicitly set to 'udpu' instead of implicit default!"
> >
> >
> > Can I ignore that for the upgrade? I had constant problems with
> multicast, udpu is quite reliable.
> >
>
> FAILures from the checker script are (almost) *never* ignore-able. :)
>
> In this case you will be glad to hear that with corosync 3, a new transport
> technology was adoped, i.e., kronosnet. It currently is only capable of
> unicast. The corosync internal multicast-udp and udpu stack was depreacated
> and removed in favor of that. So having it set to udpu will fail the
> upgrade.
>
> See:
>
> https://pve.proxmox.com/wiki/Upgrade_from_5.x_to_6.0#Cluster:_always_upgrade_to_Corosync_3_first
>
>
> In your case, and a healthy cluster, I'd drop the transport while *not*
> restarting corosync yet. That's a change which cannot be applied live, so
> corosync will ignore it for now. Then you can continue with the upgrade
> to corosync 3 - still on PVE 5/Stretch, see above.
>
> cheers,
> Thomas
>
>

-- 
Lindsay