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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.

🔍 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

⚙️ 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.

✅ Key Features

FeatureDescription
Managed KubernetesAWS manages the control plane for high availability and scalability
VPC IntegrationDeep integration with AWS VPC for secure and fast networking
IAM AuthenticationUses AWS IAM for Kubernetes RBAC access
Fargate SupportRun containers without managing servers (serverless Kubernetes)
Security & ComplianceIntegrated with AWS security tools like IAM, CloudTrail, and GuardDuty
Integration with AWS ServicesWorks with CloudWatch, App Mesh, Load Balancer Controller, ALB, etc.
Multi-cluster and hybridEKS 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.

🛠️ 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.

🔐 Security in EKS

  • IAM Roles for Service Accounts (IRSA)

  • Kubernetes RBAC

  • Network Policies

  • EKS-optimized AMIs with regular security updates

📈 Monitoring & Logging

  • Amazon CloudWatch for metrics and logs

  • AWS X-Ray for tracing

  • Use Fluent Bit or Fluentd for custom log routing

🔄 Comparison with Similar Services

FeatureAmazon EKSGoogle GKEAzure AKS
Control Plane MgmtFully managedFully managedFully managed
Serverless NodesYes (Fargate)Yes (GKE Autopilot)Yes (AKS Virtual Nodes)
Multi-AZ SupportYesPartialYes
Deep AWS Integration✅❌❌
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