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In the figure above, five participants are shown. A Configuration Perisistence Participant manages Control Loop Elements that interact with the ONAP Configuration Persistence Service to store common data. The DCAE Participant runs Control Loop Elements that manage DCAE microservices. The Kubernetes Participant hosts the Control Loop Elements that are managing the life cycle of microservices in control loops that are in a Kubernetes ecosystem. The Policy Participant handles the Control Loop Elements that interact with the Policy Framework to manage policies for control loops. A Controller Participant such as the CDS Participant runs Control Loop Elements that load metadata and configure controllers so that they can partake in control loops. Any third party Existing System Participant can be developed to run Control Loop Elements that interact with any existing system (such as an operator's analytic, machine learning, or artificial intelligence system) so that those systems can partake in control loops.

4.

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Life Cycle Management Operations

4.1 Upgrade

Performing a hot upgrade of a Control Loop Instance at run time as well as handling an upgrade of the software in one or more of the participants in an Control Loop is a particularly challenging issue because upgrading must handle the following cases without tearing down the Control Loop:

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