8 Troubleshooting Kubernetes
This chapter covers
- How to monitor and view logs in Kubernetes
- How to determine high CPU or RAM usage in Kubernetes
- How to resolve common cluster issues in Kubernetes
- How to analyze network traffic to identify communication issues
As this is the biggest topic (30%) on the CKA exam, we’re going to cover troubleshooting in detail in this chapter. Troubleshooting means fixing issues with applications, control plane components, worker nodes, and the underlying network. When running applications in Kubernetes, problems will arise such as issues with pods, services, and deployments.
The Troubleshooting Domain
This chapter covers the troubleshooting domain of the CKA curriculum, which consists of 30% of the questions on the exam. This domain covers the techniques we use to discover and fix problems inside our Kubernetes cluster, including viewing the logs, capturing cluster events, networking issues, and application monitoring. It encompasses the following competencies.
