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

Kubernetes command-line best practices

For a seasoned Kubernetes developer and admin, kubectl is the command they run most of the time. The following steps will make your life simple and save you a ton of time and will also let you focus on more essential activities and set you apart from the rest.

Using alias

Most system administrators use aliases, and for an excellent reason. They save valuable time. Aliases in Linux are a different name for a command, and it is mostly used to shorten most frequently used commands; for example, ls -l becomes ll.

You can use the following aliases with kubectl to make your life easier.

k for kubectl

Yes, that's right. By using the following alias, you can use k instead of typing kubectl:

$ alias k='kubectl'
$ k get node
NAME                 STATUS   ROLES    AGE     VERSION...