102
IBM Certification Study Guide AIX HACMP
Adding or Changing a Node Name after the Initial Configuration
If you want to add or change a node name after the initial configuration, use
the Change/Show Cluster Node Name screen. See the chapter on changing
the cluster topology of the
HACMP for AIX, Version 4.3:Administration Guide,
SC23-4279
for more information.
4.2.3 Defining Adapters
To define the adapters after defining the node names, first consult your
planning worksheets for both TCP/IP and serial networks.
There are a number of attributes associated with an Adapter in the HACMP
configuration which need to be specified:
Adapter IP Label
Enter the IP label (the name) of the adapter you have
chosen as the service address for this adapter. Adapter
labels can be any ASCII text string consisting of
alphabetical and numeric characters, underscores, and
hyphens, up to 31 characters.
If IP address takeover is defined for that adapter, a boot
adapter (address) label has to be defined for it. Use a
consistent naming convention for boot adapter labels.
(You will choose the Add an Adapter option again to
define the boot adapter when you finish defining the
service adapter.)
You can use hyphens in adapter labels. However,
currently it might not be a good idea since the
/usr/sbin/cluster/diag/clverify
utility flags adapter
labels that contain hyphens each time it runs.
Network Type
Indicate the type of network to which this adapter is
connected. Pre-installed network modules are listed on
the pop-up pick list.
The node names are logically sorted in their ascii order within HACMP in
order to decide which nodes are considered to be neighbors for heartbeat
purposes.
In order to build a logical ring, a node always talks to its up- and
downstream neighbor in their node name’s ascii order. The uppermost and
the lowest node are also considered neighbors.
Note
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