proxmox reduce quorum votes / fencing

[Spiros Pap]

Hi all,

Today, I rebooted one node and every node of cluster rebooted...
Now, the details:
I have a cluster of 4 nodes, where 1 is constantly down, because it has a hardware failure and we are waiting for spare parts. So, the cluster has 4 nodes, where 3 of them are alive.
Now, I rebooted one of the 3 alive nodes and the other 2 immediately followed and rebooted.

1. First question: I assume that the 2 nodes that were alive believed that the lost quorum. Is that correct? 2 out of 4 votes, is not enough ?
2. Can i reduce the expected votes for quorum to 2, in order to have quorum with 2 nodes, while my 4h node is been fixed?
3. Can i change/control the behaviour of fencing?

Thanx,
Sp

 

[dietmar]

1. First question: I assume that the 2 nodes that were alive believed that the lost quorum. Is that correct? 2 out of 4 votes, is not enough ?

exactly

2. Can i reduce the expected votes for quorum to 2, in order to have quorum with 2 nodes, while my 4h node is been fixed?

Either change the the number of votes on then running nodes, or temporarily set

# pvecm expected 2

3. Can i change/control the behaviour of fencing?

no

 

[Spiros Pap]

Hi Dietmar,

Thanx for the answer.
Perhaps it would be a nice idea, to put a vibrant warning on the Proxmox GUI, that the cluster is in a state with no node redundancy at the moment. This kind of warning might break my false sense of redundancy because I had 3 active nodes in the cluster...

Regards,
Sp