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

Getting to grips with basic AWS networking

Before we discuss EKS networking, we will quickly review basic VPC networking in AWS. When you sign up to AWS, you are provided with an AWS account that can deploy services across multiple Regions, and multiple Availability Zones (AZ) in each Region. A Region is a geographic location, such as London, Frankfurt, or Oregon, and consists of multiple AZs, which in turn each consist of two or more AWS data centers connected to each other over high-speed networks. An AZ is the basic unit of network reliability in AWS.

Figure 7.4 – Basic VPC structure

Figure 7.4 – Basic VPC structure

A VPC is a regional construct that is defined by an IP Classless Inter-Domain Routing (CIDR) range such as 10.1.0.0/16. Subnets are assigned from a VPC and map to one AZ. Services that have an IP address, such as EKS, are assigned to a subnet (or group of subnets) and the AWS platform will assign an available IP address from the subnet range and create an Elastic...