topic Re: SG cluster basic question in Operating System - HP-UX

SG cluster basic question

Srinikalyan — Tue, 17 Jun 2008 08:02:30 GMT

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

Re: SG cluster basic question

melvyn burnard — Tue, 17 Jun 2008 09:23:55 GMT

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.

Re: SG cluster basic question

Srinikalyan — Tue, 17 Jun 2008 09:32:40 GMT

Thanks Melvin. I got the answer.