[Pacemaker] 3rd node just for quorum

[Klaus Darilion]

Hi!

Currently I have a 2 node cluster and I want to add a 3rd node to use
quorum to avoid split brain.

The service (DRBD+DB) should only run either on node1 or node2. Node3
can not provide the service - it should just help the other nodes to
find out if their network is broken or the other node's network is broken.

Is my idea useful?

How do I add such a "simple" 3rd node - just by using location
constraints for the service to be run only on node1 or node2?

Thanks
Klaus