Book Image

The Docker Workshop

By : Vincent Sesto, Onur Yılmaz, Sathsara Sarathchandra, Aric Renzo, Engy Fouda
5 (3)
Book Image

The Docker Workshop

5 (3)
By: Vincent Sesto, Onur Yılmaz, Sathsara Sarathchandra, Aric Renzo, Engy Fouda

Overview of this book

No doubt Docker Containers are the future of highly-scalable software systems and have cost and runtime efficient supporting infrastructure. But learning it might look complex as it comes with many technicalities. This is where The Docker Workshop will help you. Through this workshop, you’ll quickly learn how to work with containers and Docker with the help of practical activities.? The workshop starts with Docker containers, enabling you to understand how it works. You’ll run third party Docker images and also create your own images using Dockerfiles and multi-stage Dockerfiles. Next, you’ll create environments for Docker images, and expedite your deployment and testing process with Continuous Integration. Moving ahead, you’ll tap into interesting topics and learn how to implement production-ready environments using Docker Swarm. You’ll also apply best practices to secure Docker images and to ensure that production environments are running at maximum capacity. Towards the end, you’ll gather skills to successfully move Docker from development to testing, and then into production. While doing so, you’ll learn how to troubleshoot issues, clear up resource bottlenecks and optimize the performance of services. By the end of this workshop, you’ll be able to utilize Docker containers in real-world use cases.
Table of Contents (17 chapters)
Preface

7. Docker Storage

Activity 7.01: Storing Container Event (State) Data on a PostgreSQL Database

Solution:

  1. Run the following commands to remove all the objects in your host:
    $ docker container rm -fv $(docker container ls -aq)
    $docker image rm $(docker image ls -q)
  2. Get the volume names, and then remove all the volumes using the following commands:
    $docker volume ls
    $docker volume rm <volume names separated by spaces>
  3. Get the network names and then remove all the networks using the following commands:
    $docker network ls
    $docker network rm <network names separated by spaces>
  4. Open two terminals, one dedicated to seeing docker events --format '{{json .}}' in effect. The other one should be opened to execute the previously mentioned high-level steps.
  5. In the first terminal, run the following command:
    docker events --format '{{json .}}'.

    You should get an output like the following:

    Figure 7.11: Output of the docker events command...