License Manager Architecture

Overview

License Manager works in a client/server architecture, where the main components are the Agent, the API and the CLI.

The License Manager Agent is the component that syncs the local Slurm license counters with the License Server data. It runs on a dedicated node that has access to Slurm commands (via sackd, for example), decoupled from the slurmctld node In the slurmctld, the License Manager Prolog/Epilog scripts are responsible for making Booking requests to the License Manager API when a job is submitted to Slurm.

The License Manager API provides a RESTful API where license usage and Bookings are tracked. The License Manager Agent uses this API to store the license usage information, while the License Manager Prolog/Epilog scripts use it to process the Booking requests.

The License Manager CLI provides an interface for managing license Configurations and retrieving usage information for tracked licenses via the License Manager API.

Architecture

Each component has its own architecture page:

• License Manager Agent

• License Manager API

• LIcense Manager CLI