Book Image

Modern DevOps Practices

By : Gaurav Agarwal
Book Image

Modern DevOps Practices

By: Gaurav Agarwal

Overview of this book

Containers have entirely changed how developers and end-users see applications as a whole. With this book, you'll learn all about containers, their architecture and benefits, and how to implement them within your development lifecycle. You'll discover how you can transition from the traditional world of virtual machines and adopt modern ways of using DevOps to ship a package of software continuously. Starting with a quick refresher on the core concepts of containers, you'll move on to study the architectural concepts to implement modern ways of application development. You'll cover topics around Docker, Kubernetes, Ansible, Terraform, Packer, and other similar tools that will help you to build a base. As you advance, the book covers the core elements of cloud integration (AWS ECS, GKE, and other CaaS services), continuous integration, and continuous delivery (GitHub actions, Jenkins, and Spinnaker) to help you understand the essence of container management and delivery. The later sections of the book will take you through container pipeline security and GitOps (Flux CD and Terraform). By the end of this DevOps book, you'll have learned best practices for automating your development lifecycle and making the most of containers, infrastructure automation, and CaaS, and be ready to develop applications using modern tools and techniques.
Table of Contents (19 chapters)
1
Section 1: Container Fundamentals and Best Practices
7
Section 2: Delivering Containers
15
Section 3: Modern DevOps with GitOps

Technical requirements

For this chapter, we will spin up a cloud-based Kubernetes cluster, Google Kubernetes Engine (GKE), for the exercises. That is because you will not be able to spin up load balancers and persistent volumes within your local system, and therefore we cannot use KinD and minikube in this chapter. Currently, Google Cloud Platform provides a free $300 trial for 90 days, so you can go ahead and sign up for one at https://console.cloud.google.com/.

Spinning up Google Kubernetes Engine

Once you've signed up and logged into your console, you can open the Google Cloud Shell CLI to run the commands.

You need to enable the Kubernetes Engine API first using the following command:

$ gcloud services enable container.googleapis.com

To create a three-node GKE cluster, run the following command:

$ gcloud container clusters create cluster-1 --zone \
us-central1-a
Creating cluster cluster-1 in us-central1-a... Cluster is being health-checked (master is healthy...