Managing HP Serviceguard for Linux Ninth Edition, April 2009

NOTE: In addition, the following characters
must not be used in the cluster name if you are
using the Quorum Server: at-sign (@), equal-sign
(=), or-sign (|), semicolon (;).
These characters are deprecated, meaning that
you should not use them, even if you are not
using the Quorum Server.
All other characters are legal. The cluster name
can contain up to 39 characters.
CAUTION: Make sure that the cluster name is
unique within the subnets configured on the
cluster nodes; under some circumstances
Serviceguard may not be able to detect a
duplicate name and unexpected problems may
result.
In particular make sure that two clusters with
the same name do not use the same quorum
server; this could result in one of the clusters
failing to obtain the quorum server’s arbitration
services when it needs them, and thus failing to
re-form.
HOSTNAME_ADDRESS_FAMILY Specifies the Internet Protocol address family to
which Serviceguard will try to resolve cluster
node names and Quorum Server host names.
Valid values are IPV4 and ANY. The default is
IPV4.
• IPV4 means Serviceguard will try to resolve
the names to IPv4 addresses only.
• ANY means Serviceguard will try to resolve
the names to both IPv4 and IPv6 addresses.
In this case, the hostname resolution file on
each node (for example, /etc/hosts) must
contain entries for all the IPv4 and IPv6
addresses used throughout the cluster,
including all STATIONARY_IP and
HEARTBEAT_IP addresses as well any
private addresses. There must be at least one
IPv4 address in this file. In addition, /etc/
102 Planning and Documenting an HA Cluster