Is there a method to change a primary hub on one domain into a secondary hub on a different domain?

Products

• DX Infrastructure Management

Issue/Introduction

Is it possible to convert the primary hub in my secondary/development/test environment to just a regular secondary hub in a different environment?

Environment

Release : 20.3

Component : UIM - HUB

Resolution

Yes, this is possible.

The only real difference in UIM between the primary hub and other hubs is the presence of the primary data_engine and some of the other infrastructure probes; the presence of the primary data_engine is largely how we determine within UIM which hub is the primary hub.

So, all you should really need to do to convert a hub in this manner is:

1. deactivate and delete data_engine
2. deactivate and delete any other probes which are not present on a "normal" hub;  e.g., ems, trellis, udm_manager, discovery_server, etc.
3. Stop the hub and change the hub.cfg to point to the appropriate domain
4. If needed, set up a tunnel or static hub/name services route on the new primary, so it can see this hub

Essentially the only probes you "need" are:
- controller
- hdb
- spooler
- hub

-nas (optional or you can use queues to forward alarms)

- plus any "monitoring" probes you wish to have on the hub (cdm for example).

Then, of course, you would want to set up queues which move the QOS/Alarms from that hub to your "new" primary, just like you have set up on any normal secondary hub.

Once all these steps are completed the hub has been converted.