quorum only node for 3.4 and 4.0?

[pixel]

Im sure this is covered somewhere, i just cant find it. How do you make a quorum only node in a cluster that you intend to upgrade to 4.0 (so not using a quorum disk)? in other words, a node thats only there to maintain quorum and wont run any instances.

in my case, i have 3 real nodes, and id like to add two qnodes so that the cluster can fail down to 1 real node. these qnodes would be much cheaper than real ones.

i think something like logic supply with 2 nics, so it can properly lag across the main switch would be reliable enough.

 

[t.lamprecht]

Install it like normal, then when you're in a HA environment, add groups which only include your real nodes and add them to the services (enable restricted so it sure uses only this nodes). So on a failure the VMs will only get HA migrated to a "real node".
Cheaper for sure, but as the do no work also not that useful, In some scenarios there may even be a drawback. If in your 3 node cluster two nodes fail at the same time you already have a problem to fix, to shovel all the workload on the remaining node is in my opinion a bit like a plaster on a broken arm