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license-manager-simulator

A License management simulator project for testing license integration in user applications.
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Table of Contents

• Table of Contents
• About The Project
• Installation
• Prerequisites
• Usage
• License
• Contact

About The Project

The license-manager-simulator is an application that simulates several license servers output for use in the development of applications which interface to the license servers.

There are 2 parts: the API to manage license information and the applications that simulate the license servers output.

License servers supported:

• FlexLM
• RLM
• LS-Dyna
• LM-X

Installation

To install this project, clone the repository and use docker-compose to run it in containers:

$ docker-compose up

This will create a container for the API, and also a PostgreSQL container for the database.

The API will be available at http://localhost:8000/lm-sim.

Prerequisites

To use the license-manager-simulator you must have Slurm and license-manager-agent charms deployed with Juju. Instructions for this can be found at the License Manager documentation.

For each license server supported, there's a script that requests license information to the simulator API and a template where the data will be rendered. These files need to be copied to the license-manager-agent machine.

You also need to add licenses to the simulator API and to the Slurm cluster, and then copy an application file to the slurmd node to run a job.

To prepare your local license-manager-agent to use the simulator, run the simulator API, get its IP address and pass it to the make setup command:

$ make setup lm_sim_ip=http://127.0.0.1:8000

After executing this command, you'll be able to submit jobs that use the simulated licenses.

Usage

You can add/remove licenses from the license server API using the online interface at http://localhost:8000/lm-sim/docs. This helps you to make requests directly with the browser into the API, with examples.

There is an application.sh script that is intended to run in Slurm as a job that uses the licenses from the API. It is just a dummy application for testing purposes that creates a license_in_use in the API, sleeps, then deletes the license_in_use. There is also a batch.sh script to run the application via sbatch.

These files are seeded with the API IP address provided in the step above and available at /tmp folder in the slurmd node.

To submit the job, run:

$ juju ssh slurmd/leader sbatch /tmp/batch.sh

License

Distributed under the MIT License. See LICENSE for more information.

Contact

Omnivector Solutions - www.omnivector.solutions - info@omnivector.solutions

Project Link: https://github.com/omnivector-solutions/license-manager-simulator