[PVE-User] proxmox serverfarm - how?

aderumier at odiso.com aderumier at odiso.com
Wed Mar 3 09:28:11 CET 2021


Hi, if you have something central, knowning exactly how much nodes are
currently running, and stop/starting them dynamically

you could play with "pvecm expected X"  to tell how many vote you need
to have quorum.

(for example, you have 10 nodes builded in corosync,  you shutdown 5 of
them --> so no quorum,   just use "pvecm expected 5")


Le mercredi 03 mars 2021 à 08:25 +0100, Roland privat a écrit :
> hello, 
> 
> we want to build an experimental dynamic „datacenter“ in our
> makerspace (mostly for academic purpose), where the number of nodes
> online depends on energy availability, heat demand, processing
> demand, .... , but if i see this right a proxmox cluster needs half
> of the nodes +1 online to have quorum, i.e. for example we wont be
> able to start a vm if only two out of 10 nodes are online. 
> 
> what‘s the best way to solve this, i.e. what is the most
> secure/consistent way? 
> 
> eg for a cluster of 10 nodes, what about adding 10 virtual proxmox
> dummy nodes or qdevice instances in another location (so one single
> physical host online has quorum) instead of tuning node/quorum number
> in corosync configuration? 
> 
> what we want is a „farm“ but not a cluster. but we want centralized
> management and vm migration. 
> 
> regards
> roland
> 
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