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Mastering Elastic Kubernetes Service on AWS

Mastering Elastic Kubernetes Service on AWS

By : Malcolm Orr, Yang-Xin Cao, Yang-Xin Cao (Eason)
4.9 (23)
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Mastering Elastic Kubernetes Service on AWS

Mastering Elastic Kubernetes Service on AWS

4.9 (23)
By: Malcolm Orr, Yang-Xin Cao, 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)
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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

Understanding EKS networking

Now that we understand the basic K8s network models, what a CNI is, and how VPC networking works, we can explore how EKS networking works. The VPC CNI has several configuration options; we will not cover all possible configurations in this section, only the most common ones.

EKS is a managed service, and the control plane is managed by AWS in a separate VPC. The two main networking questions you need to ask when configuring your cluster are: how do I access the API endpoint from kubectl (and other) clients? And how are my Pods accessed or access other systems? We covered public and private endpoints in Chapter 6, so for the remainder of this chapter, we will focus on Pod networking. Let’s start with a basic EKS deployment, a private cluster with two EC2 instances in a node group. The cluster has been configured to connect to two private VPC subnets; the node group is also deployed to the same two subnets.

Figure 7.5 – EKS networking (basic)

Figure 7.5...

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