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

Monitoring clusters and Pods using native AWS tools

One of the key advantages of an AWS deployment of Kubernetes (EKS) over an on-premises deployment of Kubernetes is it comes pre-integrated into CloudWatch, which is the main logging and monitoring platform for AWS. With a standard EKS cluster, you will automatically get control plane logs, EC2 worker node and load balancer (Network or Application Load Balancer) logs and metrics, along with metrics and logs from other AWS services such as databases, message queues, and so on.

Let’s look at how we can create a basic CloudWatch dashboard using standard EC2 metrics to understand the work nodes for our cluster.

Creating a basic CloudWatch dashboard

We’ll use Terraform to create a simple dashboard that shows an aggregated view of all instances that are tagged with a specific cluster name, and a second one that shows each individual node. The code snippet shown next illustrates the basic structure, a data object (which...