Kubernetes Services on AWS
Kubernetes is open-source software that allows the user to deploy and manage the containerized applications on a scale. In AWS, Kubernetes manages clusters of EC2 compute instances and runs containers on those instances with processes for deployment, scaling, and maintenance. Using Kubernetes, we can run containerized applications which are of any kind using the same toolset on-premises and in the Cloud. AWS makes it easy to run Kubernetes in the Cloud with highly-available and scalable virtual machine infrastructure, Amazon Elastic Kubernetes Service (EKS), community-backed service integrations, managed Kubernetes service.
How Kubernetes Works
Kubernetes used for maintaining a cluster of compute instances and programming containers to operate on the cluster based on the accessible compute resources and the fundamentals of each container. Containers are run in a logical grouping, which is known as Pods, and we can scale and run one or many containers together as a pod.
Kubernetes decides when and where to run the pods, manages traffic routing, and scales the pods based on utilization or other metrics that define. Kubernetes automatically start pods based on the cluster’s support requirements and automatically restarts pods if they or the instances they are running on fail. Each pod is given a single DNS name and an IP address, which uses to connect user’s services and external traffic by Kubernetes.
Why Use Kubernetes
Kubernetes is an open-source project which has big communities, we can use it to run containerized applications anywhere without needing to change our operational tooling. Additionally, many additional open-source projects and vendors build and maintain Kubernetes -compatible software that we can use to improve and extend the application architecture.
What Is Amazon Elastic Kubernetes Service (Amazon EKS)?
Amazon Elastic Kubernetes Service (Amazon EKS) is a managed service by Amazon that makes it straightforward to administer Kubernetes on AWS without requiring to stand up or manage their Kubernetes control plane. Amazon EKS runs Kubernetes control plane instances across Availability Zones for implementing high availability. Amazon EKS automatically detects and replaces unhealthy control plane instances, and provides automated version upgrades. Amazon EKS also have other AWS services integrated for providing Security and Scalability for user’s applications, including the following –
- Amazon VPC for isolation
- Elastic Load Balancing
- IAM for authentication
- Amazon ECR for container images
Amazon EKS runs up-to-date versions of open-source Kubernetes software so that we can use all the existing plugins and tools from the Kubernetes community. Applications that are running on Amazon EKS are fully compatible with applications running on any standard Kubernetes environment. This means that we can easily migrate any standard Kubernetes application to Amazon EKS without any modification of code required. Getting started with Amazon EKS is as easy as a piece of cake; just follow the below steps to deploy Kubernetes application in the EKS cluster.
- First, create an Amazon EKS cluster in the AWS Management Console or with one of the AWS SDK or AWS CLI.
- Then, launch worker nodes that register with the Amazon EKS cluster. AWS provides an AWS CloudFormation template that automatically configures the nodes.
- When the cluster is ready, configure the favorite Kubernetes tools(Kubectl, for example) to communicate with the cluster.
- At last, Deploy and manage applications on Amazon EKS cluster in the same way that would with any other Kubernetes environment.
A Comprehensive Approach
To know more about deployment, management of containerized applications using Kubernetes, we suggest following the ensuing steps –