How to Monitor Kubernetes API Server

Monitoring the Kubernetes API server is essential for ensuring the stability and performance of a Kubernetes cluster, as it serves as the core component of the control plane responsible for processing requests and managing the cluster's state. The article provides a comprehensive guide on how to monitor the Kubernetes API server using tools like Prometheus, by scraping metrics endpoints that provide insights into key performance indicators such as latency, traffic, errors, and saturation. These metrics help identify performance issues, allowing for quick troubleshooting and maintaining the cluster's health. It emphasizes the importance of understanding metrics like apiserver_request_duration_seconds and apiserver_request_total to assess latency and traffic volumes, while also highlighting the utility of Sysdig Monitor for enhanced monitoring and troubleshooting. The article underscores the need for proper monitoring to prevent disruptions in Kubernetes operations like starting or stopping Pods and services.