How does OC communicate with discovery agents?

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)
• CA Unified Infrastructure Management On-Premise (Nimsoft / UIM)
• CA Unified Infrastructure Management SaaS (Nimsoft / UIM)

Issue/Introduction

Need info on how OC communicates with the discovery_agents.

Environment

Release: UIM 8.5 or higher
Component: UIMDSC

Resolution

OC itself does not communicate/talk to Discovery or communicate with with discovery_agents at all. Plus queues are now used for the discovery objects, there are no data files, no databases, or anything like that.

0. Discovery_server scans CM_DISCOVERY_AGENT for information on which agents are active, and their respective addresses and versions.

1. Discovery_server contacts each discovery_agent and passes it a configuration (for every scope, a start time must be present for the config to push properly, simply selecting "start discovery now" is insufficient and will generate errors).

2. Discovery_agent starts discovery and pushes the results onto a queue with the subject probeDiscovery. These messages contain both host and topology information.

3. Discovery_server subscribes to a probeDiscovery queue and scans for incoming discovery messages.

4. Discovery_server collects and correlates the entries based on its configuration.

5. Discovery_server sends the results to the UIM database where the appropriate tables are maintained.

6. OC reads UIM DB for a listing of all discovered objects and displays them in the Inventory group.