Amazon EKS: A Kubernetes Service in AWS
Amazon Elastic Container Service for Kubernetes (Amazon EKS) was announced during re:Invent 2017 and is now available for production use. Amazon Elastic Container Service for Kubernetes (Amazon EKS) is service designed to ease the deployment, management and measurement of containerized applications using the Kubernetes service on AWS.
Now the question arises what is Kubernetes and AWS, AWS (Amazon Web Services) is a provider of a protected cloud services platform and offers various facilities such as computing power, storing of a database, delivering of content and numerous other functions that help businesses to scale up and grow in the “cloud”. Their main goal is to give the customer proper cloud solutions and products and an ease-of-use mentality. For instance, AWS includes a version upgrade and patch when they discover solutions geared towards having more scalability, reliability and flexibility to benefit us.
After understanding the functions of AWS, let’s move on to Kubernetes, which is an open-source organizational software designed to deploy and manage cloud workloads through various containerized applications at scale.
Today many applications are being built using containers, which are microservices packaged with their dependencies and configurations. Containers isolate an application and its dependencies into a self-contained node that can run anywhere, no need for physical hardware, allowing for more efficient use of computing resources, both in terms of energy consumption and cost effectiveness.
Basically, containers focus on virtualizing at the operating system (OS) level rather than the hardware level (such as a VM). Virtualizing at this level dramatically improves the ease-of-use for software/application patching, where updating only the container and avoiding a full-system outage.
Kubernetes groups containers into logical groupings for discoverability too. Once this has been performed, it launches them into clusters. Again, it’s a container management platform that allows the operator to run containerized applications, i.e. batch processing for workers, microservices and platforms as a service (PaaS).
Moreover, Amazon Elastic Container Service for Kubernetes (Amazon EKS) is a facility that simply manages the entire Kubernetes infrastructure for its users across multiple AWS availability zones in order to eradicate points of failure, without the need of maintaining individual Kubernetes control panels for each. In addition to this, Amazon EKS is a certified Kubernetes compatible platform that allows the usage of current plugins and tools of Kubernetes partners and community. The applications and plugins that are being used on the various other standard Kubernetes environments are compatible with Amazon EKS and can be easily migrated (thanks to an AWS feature).
Currently, Amazon EKS is available for all of the customers already using AWS. To ensure high levels of availability it automatically finds unhealthy and harmful zones and replaces them along with version updates and patching. It’s integrated with numerous AWS services that offer secure and scale function applications such as Elastic Load Balancing for distributing the load, Amazon VPC for isolation and IAM for authentication.
Indeed, Amazon EKS in quite beneficial for users as it allows its users to manage the Kubernetes functions without the need of control plane. Along with providing a secure and encrypted communication channel (automatically set up between the management control plane and the worker nodes), it provides a secure and safe platform too. This platform is compatible and conformant with all the Kubernetes community and partners, henceforth, all applications run by Amazon EKS can manage any standard Kubernetes environment. AWS also works actively with the Kubernetes partners and community, making contributions to the Kubernetes code base. These contributions are allowing Amazon EKS consumers to take advantage of other numerous facilities and features of Amazon Web Services.
The Amazon EKS has a four step process. First, starting from the provision of EKS cluster where EKS automatically installs and arranges the Kubernetes masters. Also, in this step, you’ll have to build an Amazon EKS cluster in the AWS Management Console. Then on to the launcher phase, where the Amazon EKS Cluster registers and adds worker nodes. The Amazon EKS provides an AWS CloudFormation template that is capable of automatically configuring the worker nodes. As soon as the cluster is ready, and the configuration of a favorite Kubernetes tool… kubectl, which helps in communication with the cluster, it runs the Kubernetes applications by deploying the Kubernetes apps to the EKS cluster. Next, the management and deployment of applications began in the same way an Amazon EKS cluster would work on any Kubernetes environment.
In short, Amazon Elastic Container Service for Kubernetes (Amazon EKS) is simply a managed infrastructure that creates ease of use while running the Kubernetes (without any need of installing or even operating Kubernetes clusters). Additionally, making the Kubernetes infrastructure an easy and best option for managing, deploying and scaling of containerized applications. It definitely scales the Kubernetes control plane including the API servers & backend persistence layer to detect fault tolerance and errors, also to enhance availability. Amazon EKS is combined with numerous AWS functions in order to deliver scalability and security of applications. Companies have started to adopt Amazon’s EKS service because of its greater benefits. Companies such as GoDaddy, Snapchat, Logicworks, Zendesk, Pearson, Honeywell, Ticketmaster and various others.
Following are some use cases of Amazon EKS.
Micro-services: Amazon EKS can easily run micro-services with the integration AWS services with full Kubernetes functionality.
Hybrid Container Deployments: Amazon EKS can maintain full compatible deployments with AWS environment while offering secure and reliable Kubernetes cluster which can run anywhere across multiple zones.
Batch Processing: Kubernetes jobs APIs allows to run either parallel or sequential workloads on Amazon EKS cluster, and these workloads can either be run on Amazon EC2 On-Demand Instances, Spot Instances, or Reserved Instances.
Application Migration: Kubernetes app can be migrated to Amazon EKS without any modification in the code.
Want to get started with Amazon EKS – To learn and getting step by step process of Amazon EKS, please follow this link.
Amazon will charge $0.20 per hour for using for each Amazon EKS cluster that will be created. Single Amazon EKS cluster can be used to run multiple apps by taking advantage of IAM role-based policies and Kubernetes namespaces.
Note: AWS will charge you for using AWS resources (EC2 instances, EBS volumes) that you will create to run your Kubernetes worker nodes. There are no upfront commitments and no minimum fee for EKS, you will have to pay for what you use.