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

Launching your first Pods

In this section, we will explain how to create our first Pods in our Kubernetes cluster. Pods have certain peculiarities that must be understood to master them well.

We are not going to create a resource on your Kubernetes cluster at the moment; instead, we are simply going to explain what Pods are. In the next section, we'll start building our first Pods.

Creating a Pod with imperative syntax

In this section, we are going to create a Pod based on the NGINX image. We need two parameters to create a Pod:

  • The Pod's name, which is arbitrarily defined by you
  • The Docker image(s) to build its underlying container(s)

As with almost everything on Kubernetes, you can create Pods using either of the two syntaxes available: the imperative syntax and the declarative syntax. As a reminder, the imperative syntax is to run kubectl commands directly from a terminal, while with declarative syntax, you must write a YAML file containing...