134 Messaging Solutions in a Linux Environment
2. This command will show which arrays, if any, are on controller 1:
# ipssend getconfig 1 | grep Array
Example 4-7 shows this output from this command.
Example 4-7 ipssend getconfig: failover condition
Array A stripe order (Channel/SCSI ID) : 1,2 1,3
Array B stripe order (Channel/SCSI ID) : 1,0 1,1
Running that command on the failed node will not return any lines.
4.2.6 HA configuration summary
In summary, Table 4-1 represents our high availability configuration:
Table 4-1 Summary of HA configuration
4.3 Installing and configuring WebSphere MQ
Perform the same steps outlined in 3.3, “Installing and configuring WebSphere
MQ” on page 68. There are no specific installation requirements for this scenario.
4.4 Message generation application
The message generating program used in this scenario is the same application
used in the first scenario. See 3.4.1, “Design of the message generation
application” on page 71 and 3.4.2, “Developing the message generation
application” on page 71. No changes are required to the application.
4.4.1 Compiling and running the message generation application
Perform the following tasks to compile and run the application:
Node(s) Up: IP Addresses: Mounted Filesystems:
brk1 and brk2 brk1 -
brk2 -
brk1 - /var/mqm/brk1
brk2 - /var/mqm/brk2
brk1 only brk1 -
brk1 -
brk1 - /var/mqm/brk1
brk1 - /var/mqm/brk2
brk2 only brk2 -
brk2 -
brk2 - /var/mqm/brk2
brk2 - /var/mqm/brk1

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