Book Image

Kubernetes and Docker - An Enterprise Guide

By : Scott Surovich, Marc Boorshtein
Book Image

Kubernetes and Docker - An Enterprise Guide

By: Scott Surovich, Marc Boorshtein

Overview of this book

Containerization has changed the DevOps game completely, with Docker and Kubernetes playing important roles in altering the flow of app creation and deployment. This book will help you acquire the knowledge and tools required to integrate Kubernetes clusters in an enterprise environment. The book begins by introducing you to Docker and Kubernetes fundamentals, including a review of basic Kubernetes objects. You’ll then get to grips with containerization and understand its core functionalities, including how to create ephemeral multinode clusters using kind. As you make progress, you’ll learn about cluster architecture, Kubernetes cluster deployment, and cluster management, and get started with application deployment. Moving on, you’ll find out how to integrate your container to a cloud platform and integrate tools including MetalLB, externalDNS, OpenID connect (OIDC), pod security policies (PSPs), Open Policy Agent (OPA), Falco, and Velero. Finally, you will discover how to deploy an entire platform to the cloud using continuous integration and continuous delivery (CI/CD). By the end of this Kubernetes book, you will have learned how to create development clusters for testing applications and Kubernetes components, and be able to secure and audit a cluster by implementing various open-source solutions including OpenUnison, OPA, Falco, Kibana, and Velero.
Table of Contents (20 chapters)
Section 1: Docker and Container Fundamentals
Section 2: Creating Kubernetes Development Clusters, Understanding objects, and Exposing Services
Section 3: Running Kubernetes in the Enterprise

Managing Velero using the CLI

Right now, all Velero operations must be done using the Velero executable. Managing a backup system without a GUI can be a challenge at first, but once you get comfortable with the Velero management commands, it becomes easy to perform operations.

The Velero executable accepts two options:

  • Commands
  • Flags

A command is an operation such as backup, restore, install, and get. Most initial commands require a second command to make a complete operation. For example, a backup command requires another command, such as create or delete, to form a complete operation.

There are two types of flags – command flags and global flags. Global flags are flags that can be set for any command, while command flags are specific to the command being executed.

Like many CLI tools, Velero includes built-in help for every command. If you forget some syntax or want to know what flags can be used with a command, you can use the -h flag to get help...