If you have a group of Blueworx Voice Response systems
that you have configured as a single system image (SSI), the following
special considerations apply:
- You need to build a custom server only once on a single system
image. You should build it on the Power System that
is running the lowest version of AIX of all those on the image; this
will ensure that the custom server will operate on any nodes of the
image.
- You can build, install, and deinstall a custom server from any
node of the single system image. When the custom server is installed
on one node of the single system image, you can run that custom server
on any other node.
- You cannot import or deinstall a custom server if it is already
running on any node of the single system image.
- For the custom server to run correctly on a single system image,
it must be SSI-compliant. This means it
must be designed using the rules described in Creating an SSI-compliant custom server.
- You can configure Blueworx Voice Response so that
it starts a custom server automatically every time Blueworx Voice Response starts
(this is described in the Blueworx Voice Response for AIX:
Managing and Monitoring the System information). However, if the custom server
is installed on a single system image, you may not want it to start
automatically on every node. To prevent this happening, you can add
the name of the custom server to an override list using the DTcs command. For more information
on this command, see the Blueworx Voice Response for AIX:
Managing and Monitoring the System.
If you want your custom server to determine whether it is running
on a client node or a server node of a single system image, or if
it is running on a stand-alone system, call the CA_Get_DT_Info() subroutine.
The DT_INFO_ST structure returned from this subroutine has a member, ssi_state,
which contains the mode in which the node has been configured. For
more information, see DT_INFO_ST. You
may want to do this, for example, to restrict the running of housekeeping
processes to one machine.
For more information on creating and managing a single system image,
see the Blueworx Voice Response for AIX:
Configuring the System information.