Kubernetes Architecture
Deep dive into Kubernetes components, control plane, and worker node architecture.
Kubernetes cluster architecture with control plane and worker nodes
Kubernetes orchestrates containerized applications at scale. Understanding its architecture helps with troubleshooting and optimal cluster design.
Architecture components:
- Control Plane - API Server, etcd, Scheduler, Controller Manager
- Worker Nodes - Kubelet, Container Runtime, Kube-proxy
- Networking - CNI plugins, Service discovery, Ingress
- Storage - Persistent Volumes, Storage Classes, CSI drivers
Key Concepts
- High availability requires 3+ control plane nodes
- etcd requires careful backup procedures
- Node sizing affects scheduling density
- Network policies for pod isolation
- Resource requests/limits for QoS
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