AWS Kubernetes Service

Amazon EKS

Amazon Elastic Kubernetes Service (Amazon EKS) is a managed Kubernetes service offered by AWS that makes it easy to deploy, manage, and scale containerized applications using Kubernetes on AWS or on-premises.

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🔍 What is Amazon EKS?

Amazon EKS is a fully managed Kubernetes control plane, meaning AWS handles all the heavy lifting for you:

• Automatically provisions and manages the Kubernetes master nodes

• Ensures high availability across multiple Availability Zones (AZs)

• Handles updates, patches, and scaling of control plane components

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⚙️ Key Components of Amazon EKS

1. Control Plane

• Fully managed by AWS

• Runs across multiple AZs

• Includes API server, controller manager, and scheduler

2. Worker Nodes

• You manage worker nodes

• Can be EC2 instances or Fargate (serverless)

• Use Amazon Machine Images (AMIs) optimized for EKS

3. EKS Add-ons

• Managed add-ons for networking (e.g., VPC CNI), observability (e.g., CloudWatch Agent), Core DNS, etc.

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✅ Key Features

Feature	Description
Managed Kubernetes	AWS manages the control plane for high availability and scalability
VPC Integration	Deep integration with AWS VPC for secure and fast networking
IAM Authentication	Uses AWS IAM for Kubernetes RBAC access
Fargate Support	Run containers without managing servers (serverless Kubernetes)
Security & Compliance	Integrated with AWS security tools like IAM, CloudTrail, and GuardDuty
Integration with AWS Services	Works with CloudWatch, App Mesh, Load Balancer Controller, ALB, etc.
Multi-cluster and hybrid	EKS Anywhere allow you to run EKS on-premises

🚀 Use Cases

1. Microservices Architecture
   Run and scale distributed services with service discovery, load balancing, and observability.

2. Machine Learning Workloads
   Run TensorFlow, PyTorch, etc., with GPU-enabled EC2 instances in EKS.

3. CI/CD Pipelines
   Build automated pipelines with EKS, CodePipeline, ArgoCD, etc.

4. Hybrid Deployments
   Use EKS Anywhere for consistent Kubernetes in on-prem or edge environments.

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🛠️ How to Deploy EKS

1. Create a cluster using AWS Management Console, CLI, or Infrastructure as Code (like Terraform or CDK).

2. Launch worker nodes (EC2 or Fargate).

3. Configure kubectl using AWS CLI with the aws eks update-kubeconfig command.

4. Deploy workloads using YAML manifests or Helm charts.

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🔐 Security in EKS

• IAM Roles for Service Accounts (IRSA)

• Kubernetes RBAC

• Network Policies

• EKS-optimized AMIs with regular security updates

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📈 Monitoring & Logging

• Amazon CloudWatch for metrics and logs

• AWS X-Ray for tracing

• Use Fluent Bit or Fluentd for custom log routing

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🔄 Comparison with Similar Services

Feature	Amazon EKS	Google GKE	Azure AKS
Control Plane Mgmt	Fully managed	Fully managed	Fully managed
Serverless Nodes	Yes (Fargate)	Yes (GKE Autopilot)	Yes (AKS Virtual Nodes)
Multi-AZ Support	Yes	Partial	Yes
Deep AWS Integration	✅	❌	❌