ArgoCD for Kubernetes clusters and applications management

Introduction to ArgoCD capabilities and how it can help manage Kubernetes "Applications" compared to Terraform.

Transcript

1. datadome.co Introduction to ArgoCD Xavier Krantz - SRE 2024-04-19 Kubernetes clusters and applications management
2. datadome.co 2 Agenda Kubernetes new paradigms How do we deploy Kubernetes applications today? Introduction to ArgoCD Q&A ? 3. 2. 1.
3. datadome.co datadome.co Kubernetes new paradigms 3 1
4. datadome.co 1 - Kubernetes new paradigms 4
5. datadome.co 1 - Kubernetes new paradigms 5
6. datadome.co 1 - Kubernetes new paradigms 6 https://kubernetes.io/docs/concepts/
7. datadome.co 1 - Kubernetes new paradigms https://kubernetes.io/docs/concepts/ 7
8. datadome.co 1 - Kubernetes new paradigms https://kubernetes.io/docs/concepts/ 8
9. datadome.co datadome.co How do we deploy Kubernetes applications today? 9 2
10. datadome.co 2 - How do we deploy today? 10
11. datadome.co 2 - How do we deploy today? 11
12. datadome.co 2 - How do we deploy today? 12
13. datadome.co 2 - How do we deploy today? 13
14. datadome.co 2 - How do we deploy today? 14
15. datadome.co 2 - How do we deploy today? 15
16. datadome.co 2 - How do we deploy today? 16
17. datadome.co 2 - How do we deploy today? 17 Challenges and pain points • Deployment of Helm releases through Terraform’s Helm provider • 5 level of nested code 1. Terraform “stack” 2. DataDome Terraform Module 3. Upstream Terraform module 4. DataDome Helm charts 5. Upstream Helm charts • Change propagation flow seems complex and restrictive • Due to the nesting of the code-base • Terraform changes are driven by Atlantis Workflow (does not fit every team)
18. datadome.co datadome.co ArgoCD introduction 18 3
19. datadome.co 3 - ArgoCD 19
20. datadome.co 3 - ArgoCD 20
21. datadome.co https://argo-cd.readthedocs.io/en/stable/ 3 - ArgoCD 21
22. datadome.co https://argo-cd.readthedocs.io/en/stable/ A declarative, GitOps continuous delivery tool for Kubernetes. 3 - ArgoCD 22
23. datadome.co https://argo-cd.readthedocs.io/en/stable/ Features 3 - ArgoCD 23 • Automated deployment of applications to specified target environments • Support for multiple config management/templating tools • Ability to manage and deploy to multiple clusters • SSO Integration (OIDC, OAuth2, LDAP, SAML 2.0, GitHub, …) • Multi-tenancy and RBAC policies for authorization • Rollback/Roll-anywhere to any application configuration committed in Git repository • Health status analysis of application resources • Automated configuration drift detection and visualization • Automated or manual syncing of applications to its desired state • Web UI which provides real-time view of application activity • CLI for automation and CI integration • Webhook integration (GitHub, BitBucket, GitLab) • Access tokens for automation • PreSync, Sync, PostSync hooks to support complex application rollouts (e.g.blue/green & canary upgrades) • Audit trails for application events and API calls • Prometheus metrics • Parameter overrides for overriding helm parameters in Git • …
24. datadome.co How it can help? • Provides a better “view” and control of Kubernetes-specific resources ◦ Using ArgoCD UI ◦ Using ArgoCD GitOps functionalities for Kubernetes applications deployment • Allows a clear separation of concerns between ◦ the infrastructure resources (AWS), ◦ the “platform components” (Kubernetes applications), ◦ and the business applications (Kubernetes applications) • Simplifies the Kubernetes Clusters management (from SRE point of view) • Simplifies the Kubernetes Applications deployment and management (from Non-SRE point of view) 3 - ArgoCD 24
25. datadome.co datadome.co Demo 25
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36. datadome.co datadome.co Any questions? Thank you! 36
37. datadome.co Miscellaneous 37 ArgoCD topology
38. datadome.co Miscellaneous 38 ArgoCD topology (2)
39. datadome.co Miscellaneous 39 Kustomize.io
40. datadome.co Miscellaneous 40 Deployment promotion workflow