IBM SG24-5131-00 User Manual

IBM Certification Study Guide  AIX HACMP

ordinary HACMP cluster, as it is described in Chapter 7 of the 

HACMP for 

AIX, Version 4.3: Installation Guide, SC23-4278. 

Now the cluster environment has to be configured. Define a cluster ID and 
name for your HACWS cluster and define the two nodes to HACMP.

Adapters have to be added to your cluster definition as described before. You 
will have to add a boot adapter and a service adapter for both primary and 
backup cws. Now that the cluster topology is defined to HACMP, you can 
configure Network Modules as in the 

HACMP for AIX Installation Guide, 

SC23-4278, and synchronize the definitions across the two cluster nodes.

With the ssp.hacws filesets comes a predefined start- and stop-script, which 
has to be defined to HACMP as part of the application server definition, which 
in turn has to be included in a resource group.

Recommended settings for this resource group are:

Resource Group Name [hacws_group1]

[rotating]

Participating Node Names [“nodename of primary cws” “nodename of 

backup cws”]

at least the hostname of the primary cws

the name of the file system, most probably 
/spdata

the name of the shared volume group containing 
/spdata

the name you gave the application server before

Both the primary and backup cws have to be addressable by their hostname, 
in order to finish the configuration and check that everything is in order. So, 
check if the primary cws can address the backup cws by its hostname and 
vice versa. If not, use the 

ifconfig

 command to temporarily set the interface 

to the hostname on each cws. Do 

NOT use 

smit chinet

 for this, since this 

would be a permanent change.

Run the command:

/usr/sbin/hacws/install_hacws -p primary_hostname -b backup_hostname -s

on the primary cws to set up HACWS with the 2 node names.