What is monitoring in general?

Monitoring involves collecting various metrics that offer insights into the health, performance, and reliability of both the infrastructure and applications running within the cluster. In Kubernetes, this means tracking resource usage (CPU, memory, and network), Pod and node health, and application-specific performance indicators. Effective monitoring is essential for ensuring system stability, detecting issues early, and optimizing resource allocation in dynamic, containerized environments.

Interview tip

Question: Why is monitoring essential in a Kubernetes environment?

Answer: Monitoring helps with tracking resource usage, detecting issues before they impact users, and optimizing system performance. Since Kubernetes is dynamic, workloads change constantly, making real-time visibility crucial for stability and efficiency.