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OpenShift Multi-Cluster Management Handbook

You're reading from   OpenShift Multi-Cluster Management Handbook Go from architecture to pipelines using GitOps

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Product type Paperback
Published in Nov 2022
Publisher Packt
ISBN-13 9781803235288
Length 458 pages
Edition 1st Edition
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Authors (2):
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Rafael Pecora Rafael Pecora
Author Profile Icon Rafael Pecora
Rafael Pecora
Giovanni Fontana Giovanni Fontana
Author Profile Icon Giovanni Fontana
Giovanni Fontana
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Toc

Table of Contents (23) Chapters Close

Preface 1. Part 1 – Design Architectures for Red Hat OpenShift
2. Chapter 1: Hybrid Cloud Journey and Strategies FREE CHAPTER 3. Chapter 2: Architecture Overview and Definitions 4. Chapter 3: Multi-Tenant Considerations 5. Chapter 4: OpenShift Personas and Skillsets 6. Part 2 – Leverage Enterprise Products with Red Hat OpenShift
7. Chapter 5: OpenShift Deployment 8. Chapter 6: OpenShift Troubleshooting, Performance, and Best Practices 9. Chapter 7: OpenShift Network 10. Chapter 8: OpenShift Security 11. Part 3 – Multi-Cluster CI/CD on OpenShift Using GitOps
12. Chapter 9: OpenShift Pipelines – Tekton 13. Chapter 10: OpenShift GitOps – Argo CD 14. Chapter 11: OpenShift Multi-Cluster GitOps and Management 15. Part 4 – A Taste of Multi-Cluster Implementation and Security Compliance
16. Chapter 12: OpenShift Multi-Cluster Security 17. Chapter 13: OpenShift Plus – a Multi-Cluster Enterprise Ready Solution 18. Chapter 14: Building a Cloud-Native Use Case on a Hybrid Cloud Environment 19. Part 5 – Continuous Learning
20. Chapter 15: What’s Next 21. Index 22. Other Books You May Enjoy

Governance using Red Hat ACM

We have been discussing the challenges that large enterprises face in keeping different environments consistent a lot in this book. The ACM governance feature can play a crucial role in your strategy to maintain secure and consistent environments, no matter where they are running. The ACM governance feature allows you to define policies for a set of clusters and inform or enforce when clusters become non-compliant.

To define policies in ACM, you need to create three objects:

  • Policy: Define the policy and remediation action that will be performed (inform or enforce).
  • PlacementBinding: Bind a policy into a PlacementRule.
  • PlacementRule: Rules that define which clusters the policy will be applied to.

You can see an example of a policy to check etcd encryption in all managed clusters on our GitHub. The following diagram shows what the interaction between the ACM policy objects looks like:

Figure 11.39 –...

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