Book Image

The Kubernetes Bible

By : Nassim Kebbani, Piotr Tylenda, Russ McKendrick
4 (3)
Book Image

The Kubernetes Bible

4 (3)
By: Nassim Kebbani, Piotr Tylenda, Russ McKendrick

Overview of this book

With its broad adoption across various industries, Kubernetes is helping engineers with the orchestration and automation of container deployments on a large scale, making it the leading container orchestration system and the most popular choice for running containerized applications. This Kubernetes book starts with an introduction to Kubernetes and containerization, covering the setup of your local development environment and the roles of the most important Kubernetes components. Along with covering the core concepts necessary to make the most of your infrastructure, this book will also help you get acquainted with the fundamentals of Kubernetes. As you advance, you'll learn how to manage Kubernetes clusters on cloud platforms, such as Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP), and develop and deploy real-world applications in Kubernetes using practical examples. Additionally, you'll get to grips with managing microservices along with best practices. By the end of this book, you'll be equipped with battle-tested knowledge of advanced Kubernetes topics, such as scheduling of Pods and managing incoming traffic to the cluster, and be ready to work with Kubernetes on cloud platforms.
Table of Contents (28 chapters)
1
Section 1: Introducing Kubernetes
5
Section 2: Diving into Kubernetes Core Concepts
12
Section 3: Using Managed Pods with Controllers
17
Section 4: Deploying Kubernetes on the Cloud
21
Section 5: Advanced Kubernetes

Implementing ReadinessProbe

ReadinessProbe, along with LivenessProbe, is an important aspect to master if you want to provide the best possible experience to your end user. We will first discover how to implement ReadinessProbe and how it can help you to ensure your containers are fully ready to serve traffic.

Why do you need ReadinessProbe?

Readiness probes are technically not part of services, but I think it is important to discover this feature alongside Kubernetes services.

Just as with everything in Kubernetes, ReadinessProbe was implemented to bring a solution to a problem. This problem is this: how to ensure a Pod is fully ready before it can receive traffic, possibly from a service?

Indeed, Services obey a simple rule: they serve traffic to every Pod that matches their label selector. As soon as a Pod gets provisioned, if this pod's labels match the selector of a service in your cluster, then this service will immediately start forwarding traffic to it. This...