SG cluster question.

[rveri]

Hi Experts,
1. What is procedure of creating a single node cluster.
2. What is the procedure of recompiling the ascii file after the single node cluster moved to another node.
3. If lock disk is needed.

Thanks.

[Steven E. Protter · Accepted solution]

Shalom,

1. Same as multi node only with 1 node. You still need shared stoarge.

http://docs.hp.com/en/J4256-90009/ch08s02.html

3. Lock disk is needed.

SEP

[Duncan Edmonstone]

3. If lock disk is needed.


A lock disk does nothing in a single node cluster - define one only if you expect the cluster to grow to 2 nodes in the near future...

Single node clusters don't do much for you - are there some specific reasons you want a single node cluster?

HTH

Duncan

[rveri]

Thanks SEP & Duncan , well I think the use of single node cluster is getting used not really for High Availability but using the NFS package technology , large number of filesystems are getting mounted using nfs package and many users from outside getting access to it.

Thanks for replies. Points awarded.

[Johnson Punniyalingam]

3. If lock disk is needed.

Hence your planning for "single node cluster" Cluster lock disk may not be required.

Cluster lock disk

The Cluster lock is a disk located in a volume group shared by all the nodes in the cluster . The cluster lock volume group and the pshyical volumer are identified in the Cluster configuration file,

The cluster lock is used as a tiebraker only for the situation in which the running cluster fails and atempt to refrom the cluster, the cluster is split init two subcluster of equal size , Each sub cluster will attempt to acquire the cluster lock.

the sub cksuter that gets the cluster lock will form the cluster , The subcluster that gets the cluster lock qill form the new cluster , The Sub cluster that does not get the cluster lock will panic in order to allow existing application to failover to the new cluster which has been formed