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)
1
Section 1: Docker and Container Fundamentals
5
Section 2: Creating Kubernetes Development Clusters, Understanding objects, and Exposing Services
9
Section 3: Running Kubernetes in the Enterprise

Using Velero to back up workloads

Velero supports running a "one-time" backup with a single command or on a recurring schedule. Whether you chose to run a single backup or a recurring backup, you can back up all objects or only certain objects using include and exclude flags.

Running a one-time cluster backup

To create an initial backup, you can run a single Velero command that will back up all of the namespaces in the cluster.

Executing a backup without any flags to include or exclude any cluster objects will back up every namespace and all of the objects in the namespace.

To create a one-time backup, execute the velero command with the backup create <backup name> option. In our example, we have named the backup initial-backup:

velero backup create initial-backup

The only confirmation you will receive from this is that the backup request was submitted:

Backup request "initial-backup" submitted successfully.
Run `velero backup describe...