Kubernetes Cluster Architecture Diagram
Lay out the control plane, worker nodes, pods and core components in a K8s cluster.
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A Kubernetes cluster architecture diagram lays out the control plane and worker nodes that run containerized workloads. The control plane includes the API server, scheduler, controller manager and etcd, while each worker node runs a kubelet, kube-proxy and a container runtime that host the pods. This hierarchy shows how Kubernetes schedules, networks and keeps containers running at scale.
DevOps engineers, platform teams and SREs use this diagram for onboarding, capacity planning and incident troubleshooting. It is the clearest way to explain which components live on the control plane versus the worker nodes, how the API server orchestrates everything, and where your pods actually execute inside the cluster.
Great for
- DevOps onboarding
- Cluster capacity planning
- Incident troubleshooting
- Platform documentation
- Certification study (CKA)
Frequently asked questions
What is Kubernetes cluster architecture?+
It is the structure of a Kubernetes cluster, made up of a control plane that manages the cluster and worker nodes that run your containerized applications in pods.
What are the main components of Kubernetes?+
The control plane has the API server, etcd, scheduler and controller manager, while each worker node runs a kubelet, kube-proxy and a container runtime hosting pods.
What is the role of the API server?+
The API server is the front end of the control plane. Every command and component talks to it, and it validates and stores cluster state in etcd.
What is the difference between a node and a pod?+
A node is a worker machine in the cluster, while a pod is the smallest deployable unit that runs one or more containers and is scheduled onto a node.
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