HP Serviceguard Quorum Server Version A.04.00 Release Notes, May 2014

or hostnames that resolve only to IPv6 addresses, to cmquerycl. See the latest Serviceguard
release notes for information about the patch.
Requirements for Using IPv6 Subnets
If you are using an IPv6 subnet, or subnets, to connect the Quorum Server to the cluster, make sure
the following requirements are met:
• If the Quorum Server is on a different subnet from the cluster, you must use an IPv6–capable
router.
• All the IPv6 addresses used by the cluster nodes to connect to the Quorum Server must be
listed in the Quorum Server's authorization file. See “Creating and Updating the Authorization
File” (page 18).
These IPv6 addresses must also be resolvable on the Quorum Server.
IMPORTANT: In the case of an IPv6–only Quorum Server, this means that the addresses
must be listed in /etc/hosts, as you cannot use DNS or NIS for name resolution in an
IPv6–only Serviceguard cluster. Similarly, in an IPv6–only cluster, the Quorum Server's IPv6
addresses must be listed in the cluster nodes' /etc/hosts.
See “About Hostname Address Families: IPv4-Only, IPv6-Only, and Mixed Mode” in Chapter 4
of Managing Serviceguard for more information.
Configuring IPv6 Addresses without the July 2009 Patch
If you have not applied the patch, you can still use IPv6 addresses, but you must generate the
cluster configuration file using an IPv4 address, then edit it to supply the IPv6 address(es) you will
actually use.
Proceed as follows to create two IPv6 connections to the Quorum Server if you have not applied
the July 2009 Serviceguard patch:
1. Make sure that there is at least one IPv4 address on the Quorum Server that can be reached
by all the cluster nodes.
2. Generate the cluster configuration file; for example:
cmquerycl -q <QS_Host> -n <Node1> -n <Node2> -C <ClusterName>.conf
3. Edit the resulting file:
1. Change the value of the QS_HOST parameter to an IPv6 address, or a hostname that
resolves to an IPv6 address.
2. Add the QS_ADDR parameter, and a second IPv6 address or hostname that resolves to
an IPv6 address.
3. Change the value of HOSTNAME_ADDRESS_FAMILY to ANY.
4. Apply the new configuration.
Configuring and Running the Quorum Server
• You can configure the Quorum Server as a monitored package in one Serviceguard cluster
to provide quorum service to another Serviceguard cluster or clusters; see “Creating a Package
for the Quorum Server” below.
• You can also configure the Quorum Server to run on a single system; see “Running the Quorum
Server on a Single System” (page 17).
Configuring and Running the Quorum Server 15