The Question is:
TCP/IP Services for OpenVMS 5.0A
Have the load broker installed, works fine for our 4 node cluster.
Is there a utility available to do dynamic updates to our DNS ourselves?
An application that uses mailboxes on the system side and TCP service
to open it to the net could be running on only one node of the cluster,
as mailboxes are not cluster wide. It would be nice to create a resource
record in DNS dynamically to point to the node the mailbox communication
would be successful.
The Answer is :
For details on DNS/BIND (and particularly ISC BIND 8.1.2), please see
the TCP/IP Services documentation, including the release notes.
Dynamic updates (RFC 2136) are permitted, though the security mechanism
described in RFC 2137 is not supported.
Within an application, the lock manager can be used to communicate
this information cluster-wide -- specifically, a value block.
If the goal is the detection of the mailbox or the bind path within an
OpenVMS Cluster, The OpenVMS Wizard would typically use the lock value
block -- as it provides the information you seek, and can also be used
to provide an interlock that will permit one and only one primary
application to be running at a time. (With OpenVMS V7.2 and later, the
available ICC mechanism might be the best choice within a cluster.)