📖 What is Amazon EKS?
Amazon Elastic Kubernetes Service (EKS) is a managed Kubernetes service that simplifies deploying, managing, and scaling containerized applications using Kubernetes on AWS. It is fully compatible with upstream Kubernetes, enabling portability and leveraging existing Kubernetes tooling and expertise.
"EKS is ideal for organizations already invested in Kubernetes. It provides a managed control plane, reducing operational overhead. Understand the differences between EKS managed node groups and self-managed nodes. Be prepared to discuss the benefits of using EKS over ECS in specific scenarios."
📚 Certification: AWS Certified Solutions Architect - Associate (SAA-C03)
🔑 What are the Key Concepts of Amazon EKS?
- ▸ EKS manages the Kubernetes control plane (API server, etcd), relieving you of patching, scaling, and high availability concerns for these critical components.
- ▸ EKS integrates with other AWS services like VPC, IAM, and CloudWatch for networking, security, and monitoring of your Kubernetes clusters.
- ▸ Managed node groups simplify node provisioning and management, while self-managed nodes offer greater control but require more operational effort.
- ▸ Kubernetes manifests (YAML files) are used to define and deploy applications on EKS, leveraging familiar Kubernetes tooling and concepts.
- ▸ EKS supports various Kubernetes versions, allowing you to choose the version that best suits your application requirements and stay current with security updates.
🎯 How does Amazon EKS appear on the SAA-C03 Exam?
You may be asked to identify the AWS service best suited for running a containerized application that requires Kubernetes orchestration and high availability.
A scenario might describe a company migrating an existing Kubernetes application to AWS – determine the most efficient service to minimize operational overhead.
Expect questions about choosing between EKS, ECS, and Fargate based on factors like control, scalability, and cost for a given application workload.
❓ Frequently Asked Questions
When would I choose EKS over ECS?
Choose EKS if you already have Kubernetes expertise or require full Kubernetes compatibility. ECS is a good option if you prefer a simpler, AWS-native container orchestration service.
What are the cost implications of using managed node groups versus self-managed nodes?
Managed node groups have an added hourly cost for the management service, but reduce your operational overhead. Self-managed nodes require you to handle patching, scaling, and maintenance, impacting your team's time.
How does IAM integrate with EKS for authentication and authorization?
IAM roles are used to grant permissions to Kubernetes service accounts, controlling access to AWS resources. You can use IAM Authenticator for Kubernetes to authenticate users and services based on their IAM credentials.