topic Re: MC -service guard node id in Operating System - HP-UX

MC -service guard node id

mukesh_a — Mon, 28 Apr 2008 04:24:05 GMT

i have the setup of three node cluster runiing with mc-service guard version 11.16 . how to find out which node has formed the cluster and which node is holding the lock vg and lock disk.?.

Re: MC -service guard node id

whiteknight — Mon, 28 Apr 2008 04:41:58 GMT

Mukesh,

if you have 3 node, no need cluster lock disk
see for detail

http://docs.hp.com/en/B3936-90117/ch03s02.html#babggaac

WK

Re: MC -service guard node id

Jeeshan — Mon, 28 Apr 2008 04:45:24 GMT

#cmquerycl -c

Re: MC -service guard node id

Sajjad Sahir — Mon, 28 Apr 2008 06:33:51 GMT

Dear Mukesh

if u want to see what are the nodes joined in u cluster u can use cmviewcl command
to see the lock vg u can use cmviewconf command
# cmviewcl
#cmviewconf

thanks and regards

sajjad

Re: MC -service guard node id

mukesh_a — Mon, 28 Apr 2008 06:37:03 GMT

my question is how can i know who is the cluster coardinator ? .

Re: MC -service guard node id

Ramesh S — Mon, 28 Apr 2008 06:41:46 GMT

Hi

Syslog may tell you the clsuetr co-ordinator who re-formed the cluster. But, normally cluster co-ordinator can be anyone in the clsuter. We can't predict that..

Best Regards,
Ramesh

Re: MC -service guard node id

Rasheed Tamton — Mon, 28 Apr 2008 07:19:46 GMT

The coordinator will be in the syslog.log:

The new active cluster membership is: oradev1(id=1), oradev2 (id=2)

The first one in the syslog entry supposed to be the cluster coordinator (id=1).

Rgds.

Re: MC -service guard node id

Sajjad Sahir — Mon, 28 Apr 2008 07:45:36 GMT

Dear Mukesh

cmcld is the actual process for joining nodes, but really i don't know why u are asking such a question ? from my understanding u have no control over it
how to know which node will be selected to be cluster coordinator?, the information in syslog in all node is enough to diagnostic the cluster related problems

thanks and regards

Sajjad Sahir

Re: MC -service guard node id

Duncan Edmonstone — Mon, 28 Apr 2008 12:37:15 GMT

mukesh,

You've already been pointed at how to find out who is the cluster coordinator - the question is - why do you care? If the coordinator drops out of the cluster, another node is elected to that position automatically, and there are no standard Serviceguard commands that require you to be on the coordinator to run.

As for 'holding the lock vg and lock disk', well the lock vg will be active on whichever node is running the package that contains the lock vg, but no node really 'holds the lock disk' - any node can access it at any timen for the purposes of arbitrating cluster membership.

HTH

Duncan

Re: MC -service guard node id

Sajjad Sahir — Mon, 28 Apr 2008 17:06:52 GMT

dear Mukesh

please assign points. Then only peoples will answer all u questions ASAP

thanks and regards

sajjad sahir