Steps bring down and bring up hp-ux server farm

[CFI-beheer]

Hi Gents,

I'm making a plan to bring down (power down)and bring up a serverfarm. In our server farm we have 2 hp-ux clusters. One is the production cluster(P) en the other is
test and acception hp-ux cluster(T&A).

The (P) cluster is a 7 nodes cluster. This nodes have a quorum server.

My questions is:
- What is the best way to power down first, the cluster nodes or the quorum server?

My opinion is that cluster nodes must first go down and after that the quorum server.

Any suggestions?

I have attached a document for with the powerdown and powerup steps that I have made.

Is this maybe the best way to powerdown and power up a hp-ux serverfarm?

Thanks

Kind Regards

Frank

[VK2COT]

Hello,

Your test plan is brief but seems OK.

Yes, quorum server should be taken off-line
after all nodes in the cluster go down.

The quorum server runs on a system external
to the cluster and is started by the system administrator, not by ServiceGuard.

It is normally started from /etc/inittab with
the respawn option, which means that it
automatically restarts if it fails or is
killed.

All members of the cluster initiate and
maintain a connection to the quorum server.
If it dies, the ServiceGuard nodes will
detect this and then periodically try to
reconnect to it.

If there is a cluster re-formation while the
quorum server is down and tie-breaking is
needed, the re-formation will fail and all
the nodes will halt (system reset). For this
reason it is important to bring the quorum
server back up as soon as possible.

You can use ServiceGuard Manager, SAM or MC/ServiceGuard commands to halt a
running cluster. For example:

# cmhaltcl -f -v

Then, you shut down all nodes.

Frankly, at start time, after your quorum server is up firstly, you can simply power
on all nodes. It should work.

Cheers,

VK2COT

[Mridul Shrivastava]

Bring down quorum server node ux07 at last and bring it up first.

Make sure that all the cluster nodes are down or cluster services are down only then bring down quorum server.

Rest all seems to be fine.