SG cluster basic question

[Srinikalyan]

Hi there,
Will the cluster be down when all the nodes in the cluster comes down? If that's the case what will happen if we run one of that node by issuing cmrunnode node1 command?
Thanks,
Srini

[melvyn burnard · Accepted solution]

Not sure what you mean by "Will the cluster be down when all the nodes in the cluster comes down"
Are you saying that if you issue a cmhaltnode on all of the nodes, and leave them runninng the OS, will the cluster be down?
If so the answer is yes.
The cluster is only considered as up if at least ONE of the nodes is running cmcld as a process.
Using cmviewcl will show this.
If all are NOT running the cmcld, you should not run cmrunnode, but rather the command:
cmruncl -n
Once at least ONE of the nodes is running cmcld, then any additional node can have cmrunnode issued to join the running cluster.

[Srinikalyan]

Thanks Melvin. I got the answer.