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

Summary

In this chapter, we explored how LBs help applications scale and provide resilience. They tend to fall into two categories, either Layer 7 or Layer 4 LBs. Layer 7 LBs, which normally work on HTTP, understand protocol-specific attributes such as paths or headers, whereas L4 LBs work at the port level and are protocol-agnostic.

We also reviewed the differences between the proxy and DSR modes; a proxy LB always sits between the client and the backend system, whereas in DSR mode, the backend can return traffic directly to the client (albeit by faking the source address to be that of the LB).

We reviewed the different types of ELBs typically used with EKS, namely the ALB and NLB, and how they differ. We then learned how to install the ALBC on an EKS cluster and then how you can use annotations and custom configuration to create either an NLB or ALB and register Pods with them so you can access the service based on the path (ALB) or ports (NLB).

Finally, we quickly reviewed...