Book Image

Mastering Elastic Kubernetes Service on AWS

By : Malcolm Orr, Yang-Xin Cao (Eason)
5 (1)
Book Image

Mastering Elastic Kubernetes Service on AWS

5 (1)
By: Malcolm Orr, Yang-Xin Cao (Eason)

Overview of this book

Kubernetes has emerged as the de facto standard for container orchestration, with recent developments making it easy to deploy and handle a Kubernetes cluster. However, a few challenges such as networking, load balancing, monitoring, and security remain. To address these issues, Amazon EKS offers a managed Kubernetes service to improve the performance, scalability, reliability, and availability of AWS infrastructure and integrate with AWS networking and security services with ease. You’ll begin by exploring the fundamentals of Docker, Kubernetes, Amazon EKS, and its architecture along with different ways to set up EKS. Next, you’ll find out how to manage Amazon EKS, encompassing security, cluster authentication, networking, and cluster version upgrades. As you advance, you’ll discover best practices and learn to deploy applications on Amazon EKS through different use cases, including pushing images to ECR and setting up storage and load balancing. With the help of several actionable practices and scenarios, you’ll gain the know-how to resolve scaling and monitoring issues. Finally, you will overcome the challenges in EKS by developing the right skill set to troubleshoot common issues with the right logic. By the end of this Kubernetes book, you’ll be able to effectively manage your own Kubernetes clusters and other components on AWS.
Table of Contents (28 chapters)
1
Part 1: Getting Started with Amazon EKS
7
Part 2: Deep Dive into EKS
13
Part 3: Deploying an Application on EKS
20
Part 4: Advanced EKS Service Mesh and Scaling
24
Part 5: Overcoming Common EKS Challenges

Launching self-managed Bottlerocket nodes with eksctl

Bottlerocket is gaining momentum as a secure platform for running container workloads. One of the key benefits is that it runs two operating system partitions, which means that it is simpler to upgrade with minimal downtime. This is discussed in more detail in Chapter 10, Upgrading EKS Clusters.

So far, we have created a managed node using the AWS CLI, the console, and a pre-made CloudFormation template. eksctl is a tool jointly developed by Weaveworks and AWS and will generate and deploy CloudFormation stacks based on a configuration file or CLI options. You can install it using the following URL: https://docs.aws.amazon.com/eks/latest/userguide/eksctl.html.

Prior to version 0.40.0 of eksctl, you could only modify clusters that had been created using eksctl. However, later versions allow a subset of operations on clusters not created by eksctl—this includes adding node groups.

We are going to use an existing cluster...