The helper. A container that runs alongside the main application container in the same pod, often for logging, monitoring, or proxies.

Kubernetes has become the operating system of the modern cloud-native era, moving beyond a simple container orchestrator to a complex ecosystem. For DevOps engineers, mastering Kubernetes isn't just about running kubectl commands; it’s about understanding the underlying architecture and operational patterns.

: The front desk; every request to change cluster state goes through here.

Understanding the control plane and worker nodes is the foundation.

The health check.