Managing Serviceguard Eighteenth Edition, September 2010

15.145.162.131 gryf
or :
— the first (or only) alias. Examples:
15.145.162.131 gryf.uksr.hp.com gryf
10.8.0.131 gryf.uksr.hp.com gryf
10.8.1.131 gryf.uksr.hp.com gryf
15.145.162.132 sly.uksr.hp.com sly
10.8.0.132 sly.uksr.hp.com sly
10.8.1.132 sly.uksr.hp.com sly
15.145.162.131 gryf.uksr.hp.com gryf
10.8.0.131 gryf2.uksr.hp.com gryf
10.8.1.131 gryf3.uksr.hp.com gryf
15.145.162.132 sly.uksr.hp.com sly
10.8.0.132 sly2.uksr.hp.com sly
10.8.1.132 sly3.uksr.hp.com sly
Note that the alias is required whenever NODE_NAME is different from the official
hostname — even if the address maps to an entry in which the NODE_NAME is
the first element of the fully-qualified domain name (as in gryf.uksr.hp.com
and sly.uksr.hp.com).
If applications require the use of hostname aliases, the Serviceguard hostname must
be the first alias in all the entries for that host. For example, if the two-node cluster in
the previous example were configured to use the aliases alias-node1 and
alias-node2, then the entries in /etc/hosts should look something like this:
15.145.162.131 gryf.uksr.hp.com gryf alias-node1
10.8.0.131 gryf2.uksr.hp.com gryf alias-node1
10.8.1.131 gryf3.uksr.hp.com gryf alias-node1
15.145.162.132 sly.uksr.hp.com sly alias-node2
10.8.0.132 sly2.uksr.hp.com sly alias-node2
10.8.1.132 sly3.uksr.hp.com sly alias-node2
IMPORTANT: Serviceguard does not support aliases for IPv6 addresses.
For information about configuring an IPv6–only cluster, or a cluster that uses a
combination of IPv6 and IPv4 addresses for the nodes' hostnames, see “About Hostname
Address Families: IPv4-Only, IPv6-Only, and Mixed Mode” (page 139).
Safeguarding against Loss of Name Resolution Services
When you employ any user-level Serviceguard command (including cmviewcl), the
command uses the name service you have configured (such as DNS) to obtain the
220 Building an HA Cluster Configuration