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)

10. Kubernetes

Activity 10.01: Installing the Panoramic Trekking App on Kubernetes


It is possible to create the database and Panoramic Trekking App with the following steps:

  1. Install the database with the following helm command:
    helm install database stable/postgresql --set postgresqlPassword=kubernetes

    This will install multiple Kubernetes resources for PostgreSQL and show a summary as follows:

    Figure 10.23: Database installation

    This output first lists Helm chart-related information such as name, deployment time, status, and revision, followed by information related to the PostgreSQL instance and how to access it. This is a widely accepted method in Helm charts to give such information following the installation of a chart. Otherwise, it would be difficult to learn how to connect to the applications installed by Helm.

  2. Create a statefulset.yaml file with the following content:
    apiVersion: apps/v1
    kind: StatefulSet
      name: panoramic-trekking...