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Kubernetes Architecture

Overview

Kubernetes Architecture — Quick Facts

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Property: Detail

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Full Name: Kubernetes Cluster Architecture

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Category: Infrastructure / Container…

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Architecture Type: Distributed, Master-Worker…

Topic 1

Lead Section

🏗️ Kubernetes architecture ek distributed system design hai jo containers ko efficiently…

Topic 2

Infobox

📐 | Property | Detail | |---|---| | Full Name | Kubernetes Cluster Architecture | |…

Topic 3

Overview

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Declarative Configuration — tum…

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Reconciliation Loop — controllers…

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Loosely Coupled Components — har…

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Pluggable Architecture —…

Topic 4

High-Level Architecture Diagram

⚙️ `mermaid graph TB subgraph ControlPlane["Control Plane (Master)"]…

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Control Plane Components

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Role: Kubernetes ka front door —…

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Protocol: RESTful HTTPS API…

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Authentication: Client…

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Authorization: RBAC (Role-Based…

Topic 6

Worker Node Components

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Role: Har node par running agent —…

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Responsibilities:

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API server se assigned PodSpecs…

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Container runtime ko instruct…

Topic 7

Communication Model

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API server hub hai — sab…

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Koi component directly doosre…

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Yeh pattern security aur…

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mTLS: etcd communication mandatory…

Topic 8

Networking Architecture

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Har Pod ko cluster-wide unique IP…

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Ek Pod ke andar saare containers…

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Pod-to-Pod communication flat…

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ClusterIP — internal virtual IP,…

Topic 9

Storage Architecture

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Volume — Pod ke saath attached…

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PersistentVolume (PV) —…

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PersistentVolumeClaim (PVC) — user…

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StorageClass — dynamic…

Topic 10

Cluster Topology Options

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1 control plane node + 1-3 worker…

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Simple, cheap, testing ke liye…

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Risk: Control plane down = cluster…

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3+ control plane nodes, har ek par…

Topic 11

Extension Points

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Apne custom API resources define…

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CRD create karne se Kubernetes API…

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Custom controllers CRDs ke saath…

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Mutating Admission Webhook —…

Topic 12

Security Architecture

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X.509 Client Certificates

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Bearer Tokens (Static, Service…

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Authenticating Proxy

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Webhook Token Authentication

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Comparison Table

Topic 14

Real-Life Architecture Example

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Cloud: AWS EKS (managed control…

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Worker Nodes: 3 node groups —…

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Networking: AWS VPC CNI + Calico…

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Storage: EBS CSI driver for…

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Best Practices

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Hamesha HA setup use karo (minimum…

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etcd ke regular backups schedule…

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API server ke liye rate limiting…

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Audit logging enable karo critical…

Topic 16

Limitations

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Complexity: Kubernetes…

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etcd Bottleneck: Very large…

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Networking Debugging: Pod…

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Upgrade Challenges: Kubernetes…

Topic 17

Glossary

🏗️ | Term | Meaning | |---|---| | Control Plane | Kubernetes ka management layer —…

Comparison

Comparison Table

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Architecture: Master-Worker (Control…

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State Store: etcd

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Scheduling: Pluggable scheduler (Filter…

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quiz — Question 1

Kubernetes Architecture ka 'Full Name' kya hai?

Complete! 🎉

Kubernetes Architecture Complete!

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