topic Re: 4 node cluster with quorum server in Operating System - Linux

4 node cluster with quorum server

AVV — Tue, 02 Mar 2010 08:03:16 GMT

Hi,

Can someone give me the steps to create a 4 node cluster (RHEL 5.3) with quorum server. I have gone through some docs but that only tells about the concept not the steps. If any one have a written working procedure, please share with me . Thanks in advance.

Re: 4 node cluster with quorum server

Matti_Kurkela — Tue, 02 Mar 2010 11:55:51 GMT

Please clarify: are you going to use HP Serviceguard for Linux, or a RedHat Cluster?

MK

Re: 4 node cluster with quorum server

AVV — Tue, 02 Mar 2010 12:51:15 GMT

Hi,

I may use Red Hat Cluster Suit

Re: 4 node cluster with quorum server

Ivan Ferreira — Tue, 02 Mar 2010 13:04:42 GMT

These documents may help you:

http://www.linuxdynasty.org/howto-setup-a-quorum-disk.html
http://magazine.redhat.com/2007/12/19/enhancing-cluster-quorum-with-qdisk/

Re: 4 node cluster with quorum server

Matti_Kurkela — Tue, 02 Mar 2010 15:14:35 GMT

A "quorum server" is a HP Serviceguard concept. It isn't directly applicable to RedHat Cluster Suite.

RedHat Cluster Suite includes a Quorum Disk Daemon that has the same purpose as a quorum server in Serviceguard: it acts as a tie-breaker when a failure splits your cluster into two equal-sized halves. Ivan already gave you some good links about it.

If you're so unfamiliar with RedHat Cluster that you feel you need step-by-step instructions, you should probably use Conga web GUI to set up your cluster. See:

http://magazine.redhat.com/2007/03/19/teaching-your-cluster-and-storage-systems-to-dance-an-introduction-to-conga/

Here's the step-by-step instructions for setting up Conga:

http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/Cluster_Administration/s1-start-luci-ricci-conga-CA.html

When you have Conga set up, creating a 4-node cluster is as easy as logging in to the Conga GUI, selecting Cluster -> Create a new Cluster, filling in the form and clicking on "Submit". (NOTE: by default, the form has slots for 3 nodes only. Click on "Add another row" button to add extra slots for as many nodes as you need.)

After the cluster has been formed, you can then add a Quorum Disk to your cluster configuration. You can either follow the instructions in Ivan's first link, *or* just initialize the quorum disk (steps 1-3 in Ivan's first link), and use Conga to add it to the cluster configuration: log in to the Conga GUI, select Cluster, click on the name of your cluster to configure it, select the "Quorum Partition" tab, fill in the information and click Submit. You're done.

MK

Re: 4 node cluster with quorum server

Steven E. Protter — Tue, 02 Mar 2010 18:54:06 GMT

Shalom again,

You mean quorum disk right?

2 node clusters are easier and its easier to share a disk for this purpose.

There is a reply to your other thread. If you answer it, it will make things easier.

SEP

Re: 4 node cluster with quorum server

AVV — Wed, 05 Jan 2011 06:53:41 GMT

Thanks