Managing Serviceguard 12th Edition, March 2006

Building an HA Cluster Configuration
Setting up the Quorum Server
Chapter 5206
Setting up the Quorum Server
The quorum server software, which has to be running during cluster
configuration, must be installed on a system other than the nodes on
which your cluster will be running.
NOTE It is recommended that the node on which the quorum server is running
be in the same subnet as the clusters for which it is providing services.
This will help prevent any network delays which could affect quorum
server operation. If you use a different subnet, you may experience
network delays which may cause quorum server timeouts. To prevent
these timeouts, you can use the QS_TIMEOUT_EXTENSION parameter in
the cluster ASCII file to increase the quorum server timeout interval.
If the network used to connect to the quorum server is a cluster
heartbeat network, ensure that at least one other network is also a
heartbeat network so that both quorum server and heartbeat
communication are not likely to fail at the same time.
Installing the Quorum Server
Use the HP-UX swinstall command to install the quorum server,
product number B8467BA, on the system or systems where it will be
running. The quorum server is installed outside of the cluster that it
serves. The quorum server should be installed outside of the cluster that
it serves. More details on installation are found in the Quorum Server
Release Notes for your version of Quorum Server.
The quorum server executable file, qs, is installed in the /usr/lbin
directory. When the installation is complete, you need to create an
authorization file on the server where the QS will be running to allow
specific host systems to obtain quorum services. The required pathname
for this file is /etc/cmcluster/qs_authfile. Add to the file the names
of all cluster nodes that will access cluster services from this quorum
server. Use one line per node, as in the following example:
ftsys9.localdomain.com
ftsys10.localdomain.com
To allow access by all nodes, enter the plus character (+) on its own line.