q: simple 2-node setup (cluster?)

Mickey Mouse

New Member
Dec 1, 2020
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i'm quite new to Proxmox and have a very basic question.
imagine a "typical" scenario in a small company with maybe 5 to 10 VMs with a quite low average load.
not negotiable is to have two hosts (e.g. to have primary/secondary DC or NIS master and slave or...) on separate physical machines for redundancy.
the idea is to create a cluster, for easy movement of the VMs and so on.
i just did such a test setup (with V6.2) and after the first verve the big disapointment came up when i switched off one of the two machines!

the other one is not useable anymore, i can't even open a root shell to fix/adjust anything, wtf?!?

so instead of adding any kind of redundancy i achieved exactly the oposite: in case of one of two machines failing not 50% of the VMs are down but all 100%.
even if i would take 3 machines for a cluster (assuming 2 are still working in case a third one fails) it would be too risky for me.

i can setup the two machines as independend nodes but loose some highly appreciated features like transfering a live VM from one host to another, for example for "manual load balancing" in case it is useful.

am i missing anything or is this "typical" scenario not possible with Proxmox in cluster mode and with two completely independ machines only where i have to move machines via backup and restore?!?
 
great stuff, that's what i've been looking for!
from my point of view a little bit overkill to use an additional machine just to cheat the system, but so what...
i want the flexibility of moving VMs between two hosts on the fly but i don't need a HA cluster with automatic fail over capabilities.
so that's the end of the early retirement of my RasPi2 ;)
 

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