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The Question is:
How to set automatic failover of application in OpenVMS Cluster V7.3-1?
There are two DS20E machines in OpenVMS Cluster.
First is "a working node" which is is running applications and IDA database.
Second node is used for development and testing. In case that first node fail
of crash, second one have to automaticaly failover application. Is there a
(Unix) CAA like way to do
it?
The Answer is :
OpenVMS applications can utilize comparatively primitive application
fail-over, but can also easily provide for entirely parallel access.
Failover can be implemented with batch jobs (restarts and related
operations and support are available), with commercial or
Freeware scheduling packages (see the FAQ), with the inherent
process startup resulting from incoming network connections to
cluster alias, and other approaches.
Parallel access provides operations across multiple nodes within
a cluster, typically using a protocol-specific cluster alias.
Tru64 UNIX Cluster Application Availability (CAA) is most directly
provided by a scheduling package, and various of these are available
as commercial packages and as Freeware -- the OpenVMS FAQ has
pointers.
Ask The Wizard Topics: (2150), (1029), (391), likely others.
Also (3531), (5870), (4602) and other topics provide supporting
information.
Batch (and print) queue-related lexical functions and DCL command
procedures are discussed in various topics.
Technical presentations on cluster application design tools and
techniques are also available, as are the OpenVMS Programming
Concepts and the Cluster manuals.
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