Move from lock disk to quorum server

[Danny Petterson - DK]

Hi Gurus!

A fast one ;-)

Got a two-node cluster, 11.31/SG 11.19.

Is it possible, without shutting down the cluster, to move from lock disk to a quorum-server?

Thanks in advance.

Greetings from
Danny Petterson

[Anoop Sivan]

Hi Danny,

You can change the quorum configuration while the cluster is up and running. This
includes changes to the quorum method (for example from a lock disk to a Quorum server)

1. Set up the quorum server and configure it with the quorum serverâ s IP address
and hostname.

2. Install and configure the Quorum Server software on the new system. Be sure to
include in the new QS authorization file (/etc/cmcluster/qs_authfile) all
of the nodes that were configured for the old quorum server.

3. Start the Quorum Server as follows:
â ¢ Edit the /etc/inittab file to add the Quorum Server entries.
â ¢ Use the init q command to run the Quorum Server.

4. The Quorum Server log file on the new quorum server will show a log message
like the following for each cluster that uses the Quorum Server:
Request for lock /sg/ succeeded. New lock owners: N1, N2

5. To check that the Quorum Server has been correctly configured and to verify the
connectivity of a node to the quorum server, you can execute the following
command from your cluster nodes as follows:
cmquerycl -q QSHostName -n Node1 -n Node2 ...
The command will output an error message if the specified nodes cannot
communicate with the quorum server.

[SoorajCleris · Accepted solution]

Hi,

you can change it online - A 11.19*

http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c02437444/c02437444.pdf

Please read page 66 - chapter


"What Happens when You Change the Quorum Configuration Online"

Regards,
Sooraj

[Emil Velez]

Suggest that you keep a lock disk if you have LVM VGs used by packages. You can select a new lock disk or change to a different type of quorum mechanism while the cluseter is up with 11.19. ITs great..

just edit the file do a cmapplyconf and the new lock mechanism should get used if available.