Book Image

Introduction to DevOps with Kubernetes

By : Onur Yılmaz, Süleyman Akba≈ü
Book Image

Introduction to DevOps with Kubernetes

By: Onur Yılmaz, Süleyman Akba≈ü

Overview of this book

Kubernetes and DevOps are the two pillars that can keep your business at the top by ensuring high performance of your IT infrastructure. Introduction to DevOps with Kubernetes will help you develop the skills you need to improve your DevOps with the power of Kubernetes. The book begins with an overview of Kubernetes primitives and DevOps concepts. You'll understand how Kubernetes can assist you with overcoming a wide range of real-world operation challenges. You will get to grips with creating and upgrading a cluster, and then learn how to deploy, update, and scale an application on Kubernetes. As you advance through the chapters, you’ll be able to monitor an application by setting up a pod failure alert on Prometheus. The book will also guide you in configuring Alertmanager to send alerts to the Slack channel and trace down a problem on the application using kubectl commands. By the end of this book, you’ll be able to manage the lifecycle of simple to complex applications on Kubernetes with confidence.
Table of Contents (11 chapters)

Chapter 5: Deploy an Application to Kubernetes

Activity 5: Installing and Scaling a WordPress Blog in Kubernetes Using Helm


Perform the following steps to complete this activity:

  1. Install the WordPress helm chart. The release name should be devops-blog and the username should be admin. Use devops as your password and DevOps Blog as the blog name:
    helm install --name devops-blog  \
    --set wordpressUsername=admin,wordpressPassword=devops \
    --set wordpressBlogName="DevOps Blog"  \
    Figure 5.25: Helm installation of the WordPress chart

    With successful installation, the output lists all the resources installed alongside the WordPress chart.

  2. Wait until all the pods are running and are ready:
    kubectl get pods
    Figure 5.26: The WordPress installation pods
  3. Open the home page of WordPress and check that it is installed successfully.

    The URL can be found using the following commands:

    # Google Kubernetes Engine installation
    kubectl get svc devops...