Book Image

Hands-On Kubernetes on Azure

By : Shivakumar Gopalakrishnan, Gunther Lenz
Book Image

Hands-On Kubernetes on Azure

By: Shivakumar Gopalakrishnan, Gunther Lenz

Overview of this book

Microsoft is now one of the most significant contributors to Kubernetes open source projects. Kubernetes helps to create, configure, and manage a cluster of virtual machines that are preconfigured to run containerized applications. This book will be your guide to performing successful container orchestration and deployment of Kubernetes clusters on Azure. You will get started by learning how to deploy and manage highly scalable applications, along with understanding how to set up a production-ready Kubernetes cluster on Azure. As you advance, you will learn how to reduce the complexity and operational overheads of managing a Kubernetes cluster on Azure. By the end of this book, you will not only be capable of deploying and managing Kubernetes clusters on Azure with ease, but also have the knowledge of best practices for working with advanced AKS concepts for complex systems.
Table of Contents (16 chapters)
Free Chapter
Section 1: The Basics
Section 2: Deploying on AKS
Section 3: Leveraging Advanced Azure PaaS Services in Combination with AKS

Debugging applications

Now that we have a basic understanding of how to monitor deployments, we can start seeing how we can debug issues with deployments.

In this section, we will introduce common errors and determine how to debug and fix them.

If not done already, run the following command:

kubectl create -f guestbook-all-in-one.yaml

After sometime, the services should be up and running.

Image Pull errors

In this section, we are going to introduce image pull errors by setting the image tag value to a non-existent one.

Run the following command on Azure Cloud Shell:

kubectl edit deployment/frontend

Next, change the image tag from v3 to v_non_existent by running the following commands: