EKS

Introduction

Amazon Elastic Kubernetes Service (Amazon EKS) is a managed service that you can use to run Kubernetes on AWS without needing to install, operate, and maintain your own Kubernetes control plane or nodes. Kubernetes is an open-source system for automating the deployment, scaling, and management of containerized applications.

Amazon EKS:

• Runs and scales the Kubernetes control plane across multiple AWS Availability Zones to ensure high availability.

• Automatically scales control plane instances based on load, detects and replaces unhealthy control plane instances, and provides automated version updates and patches for them.

• It is integrated with many AWS services to provide scalability and security for your applications, including the following capabilities:

  • Amazon ECR for container images

  • Elastic Load Balancing for load distribution

  • IAM for authentication

  • Amazon VPC for isolation

• Runs up-to-date versions of the open-source Kubernetes software, so you can use all the existing plugins and tooling from the Kubernetes community. Applications that are running on Amazon EKS are fully compatible with applications running on any standard Kubernetes environment, no matter whether they're running in on-premises data centres or public clouds. This means that you can easily migrate any standard Kubernetes application to Amazon EKS without any code modification.

High-level infrastructure

The EKS control plane runs in an Amazon-managed VPC. It creates and manages network interfaces in your account related to each EKS cluster you create. EC2 and Fargate instances use these network interfaces to connect to the EKS control plane.

A highly available architecture spans three Availability Zones.

Eks can be deployed on managed nodes, self-managed nodes and Fargate.

Pricing

You pay $0.10 per hour for each Amazon EKS cluster that you create. You can use a single EKS cluster to run multiple applications by taking advantage of Kubernetes namespaces and IAM security policies.

If you are using Amazon EC2 (including with Amazon EKS managed node groups), you pay for AWS resources (e.g., EC2 instances, Amazon Elastic Block Store (EBS)volumes.

If you are using AWS Fargate, pricing is calculated based on the vCPU and memory resources used from the time you start to download your container image until the Amazon EKS pod terminates, rounded up to the nearest second. A minimum charge of one minute applies.