Avoid locking in a 2 node cluster environment when 1 node is down.

G

GuiltyNL

Well-Known Member
Proxmox Subscriber
Jun 28, 2018
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Rotterdam
We have a solution with 2 nodes in a cluster. We won't use HA, we only want to use the replication feature, just to copy VM's to each other to make our solution redundant in a way.

We used this also in our old Hyper-V environment, but in Hyper-V we didn't need to setup a cluster. I was just able to setup replication to each other, without a cluster / quorum setup. It seems that in Proxmox a cluster is mandatory to enable replication.

In my current setup a node goes in read only mode when it doesn't have quorum because the other node is offline.

Because we only use the replication functionality I want to avoid this protection mechanism. Because a node in read only mode can't be backupped either.

I'm able to solve that with 'pvecm expected 1', but can I change the config to make this behaviour permanent?

Thanks!
 
So if I want the convenience of the GUI, I need to setup the cluster and in case of (temporary) down time of one node use 'pvecm expected 1' to be sure backupping still works.

Or I need to forget the cluster and work with the pve-zsync commandline.

Correct?
 
Generally correct.
But one question, if you have 2 nodes and one is down where do you put syncs (backups)?
 
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