Cluster, server down and backup

[mgiammarco]

Hello,
I have made a proxmox cluster with two nodes to have this features:

- live migration of virtual machines, for load balancing and for easy maintenance of a server;
- autostart of some virtual machines at cluster start.

I understand that proxmox is based on corosync and I understand corosync "peculiarities", but I find some things too restrictive.

If one of the two servers is down:

- BACKUP DO NOT WORK ANYMORE, I think backups must work even in the worst situation;
- some operations on virtual machines are not possible.

So please tell me a workaround because a cluster is not only for high availability (where quorum is mandatory) in proxmox case is useful also for migration and autostart.

Please correct me if I am wrong.

Thanks,
Mario

 

[m.ardito]

to regain quorum, temprarily issue
#pvecm expected 1

if you're _really_ sure of what you're doing, you should be able to set permanently "expected 1" somewhere in the cluster config... so it will not be locked anymore when you lose the second node...

Marco