Troubleshooting Kubernetes: Application Failures

Lab Steps

Connecting to the K8s Cluster
Troubleshooting Kubernetes Applications

Ready for the real environment experience?

Time Limit30m


Application failures are inevitable when running large clusters. This Lab teaches you how to detect, diagnose, and remedy Kubernetes application failures. You will use tools included in Kubernetes, such as kubectl, as well as a variety of Linux operating system tools like cp, cat, and top to build a comprehensive Kubernetes troubleshooting toolkit. In addition to reacting to failures, the Lab points out some ways that you can proactively reduce the chance of failures when working with Kubernetes.

This Lab is valuable to anyone working with Kubernetes, but the content has been prepared considering topics described in the Certified Kubernetes Administrator (CKA) Exam Curriculum. Completion of the Lab will help you get hands-on experience, which is essential for passing the CKA exam.

Lab Objectives

Upon completion of this Lab, you will be able to:

  • Troubleshoot Kubernetes application failures

Lab Prerequisites

You should be familiar with:

  • Working with Kubernetes to deploy applications
  • Working with kubectl
  • Working at the command line in Linux

The following Labs can be used to fulfill the prerequisites: Deploy a Stateless Application in a Kubernetes Cluster and Deploy a Stateful Application in a Kubernetes Cluster


Environment before
Environment after
About the Author
Learning paths49

Logan has been involved in software development and research since 2007 and has been in the cloud since 2012. He is an AWS Certified DevOps Engineer - Professional, AWS Certified Solutions Architect - Professional, Microsoft Certified Azure Solutions Architect Expert, MCSE: Cloud Platform and Infrastructure, Google Cloud Certified Associate Cloud Engineer, Certified Kubernetes Security Specialist (CKS), Certified Kubernetes Administrator (CKA), Certified Kubernetes Application Developer (CKAD), and Certified OpenStack Administrator (COA). He earned his Ph.D. studying design automation and enjoys all things tech.