Hello,
> While the Pacemaker versions support rolling upgrades, those Corosync
> versions do not, so you'll have to do the detach-and-reattach method.
> The main reason to do a new cluster instead is if you want to do some
> testing before making it live.
> --
> Ken Gaillot <kgail...@redhat.com>
thanks for your answer. So upgrading detached nodes will result in downtime of haproxy and may disclose some other surprises...
I think building a new cluster is the best way to avoid downtimes. In my case i could switch by DNS to new clusterservers and achive a mostly seemless transition of use.
Thank you,
Hajo
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