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

Questions

  1. Immutable infrastructure helps avoid configuration drift. (True/False)
  2. It is a best practice to source sensitive data from external variables such as environment variables or a secret management tool such as Hashicorp's Vault. (True/False)
  3. What modifications do we need to make to our existing playbooks to allow Packer to use them? (Choose one.)

    A. Remove any existing ansible.cfg files from the current working directory.

    B. Remove any host files from the current working directory.

    C. Update the hosts attribute to default within the playbook.

    D. None of the above.

  4. Which of the following are limitations of using the Ansible provisioner with Packer? (Choose all that apply.)

    A. You cannot pass Jinja2 macros as is to your Ansible playbooks.

    B. You cannot define remote_user within your Ansible playbooks.

    C. You cannot use Jinja2 templates within your Ansible playbooks.

    D. You cannot use roles and variables within your Ansible playbooks.

  5. While naming managed images...