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Hands-On Kubernetes on Azure

You're reading from   Hands-On Kubernetes on Azure Run your applications securely and at scale on the most widely adopted orchestration platform

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Product type Paperback
Published in Mar 2019
Publisher Packt
ISBN-13 9781789536102
Length 258 pages
Edition 1st Edition
Tools
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Authors (2):
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Shivakumar Gopalakrishnan Shivakumar Gopalakrishnan
Author Profile Icon Shivakumar Gopalakrishnan
Shivakumar Gopalakrishnan
Gunther Lenz Gunther Lenz
Author Profile Icon Gunther Lenz
Gunther Lenz
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Toc

Table of Contents (16) Chapters Close

Preface 1. Section 1: The Basics FREE CHAPTER
2. Introduction to Docker and Kubernetes 3. Kubernetes on Azure (AKS) 4. Section 2: Deploying on AKS
5. Application Deployment on AKS 6. Scaling Your Application to Thousands of Deployments 7. Single Sign-On with Azure AD 8. Monitoring the AKS Cluster and the Application 9. Operation and Maintenance of AKS Applications 10. Section 3: Leveraging Advanced Azure PaaS Services in Combination with AKS
11. Connecting an App to an Azure Database - Authorization 12. Connecting to Other Azure Services (Event Hub) 13. Securing AKS Network Connections 14. Serverless Functions 15. Other Books You May Enjoy

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:

image: gcr.io/google-samples/gb-frontend...
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