This is a sample project to show:

• how we can check that Celery workers are active;
• how we can inform our team with Slack notifications in other case.

Before building Docker container SLACK_TOKEN must to be passed as env variable

export SLACK_TOKEN=<your-slack-token>

Then you can build container as usual

docker-compose build

and run with

docker-compose up  # or docker-compose up -d

To test Slack notifications on worker failure you can do next:

• go to running container with docker-compose exec worker bash and stop Celery in it;
• build container without started Celery worker:

  export TEST_FAILURE=true
  docker-compose build

  To build initial container you need to call

  unset TEST_FAILURE

To checking usage of server resources, to cronjobs added related Python script.