Book Image

Kubernetes – An Enterprise Guide - Second Edition

By : Marc Boorshtein, Scott Surovich
Book Image

Kubernetes – An Enterprise Guide - Second Edition

By: Marc Boorshtein, Scott Surovich

Overview of this book

Kubernetes has taken the world by storm, becoming the standard infrastructure for DevOps teams to develop, test, and run applications. With significant updates in each chapter, this revised edition will help you acquire the knowledge and tools required to integrate Kubernetes clusters in an enterprise environment. The book introduces you to Docker and Kubernetes fundamentals, including a review of basic Kubernetes objects. You’ll get to grips with containerization and understand its core functionalities such as creating ephemeral multinode clusters using KinD. The book has replaced PodSecurityPolicies (PSP) with OPA/Gatekeeper for PSP-like enforcement. You’ll integrate your container into a cloud platform and tools including MetalLB, externalDNS, OpenID connect (OIDC), Open Policy Agent (OPA), Falco, and Velero. After learning to deploy your core cluster, you’ll learn how to deploy Istio and how to deploy both monolithic applications and microservices into your service mesh. Finally, you will discover how to deploy an entire GitOps platform to Kubernetes using continuous integration and continuous delivery (CI/CD).
Table of Contents (17 chapters)
15
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16
Index

Summary

Backing up clusters and workloads is a requirement for any enterprise cluster. In this chapter, we reviewed how to back up the etcd cluster database using etcdctl and the snapshot feature. We also went into detail on how to install Velero in a cluster to back up and restore workloads. We closed out the chapter by copying workloads from an existing backup by restoring an existing backup on a new cluster.

Having a backup solution allows you to recover from a disaster or human error. A typical backup solution allows you to restore any Kubernetes object, including namespaces, persistent volumes, RBAC, services, and service accounts. You can also take all of the workloads from one cluster and restore them on a completely different cluster for testing or troubleshooting.

Coming up in the next chapter, we will introduce you to Istio, a popular open source service mesh.