Infrastructure and applications running in Kubernetes clusters are based on a plethora of "resources". You can manually create and maintain deployments, pods, services and ingress resources, but may soon loose track of your configuration. Fortunately, there’s an alternative way to manage your Kubernetes cluster – the GitOps way. GitOps is a way of managing your cluster so that the whole system is described declaratively and version controlled. An automated process makes sure that the resources in the cluster match the desired state defined your Git repository. Flux (https://fluxcd.io) is an Open Source solution which automates this task. Given that you have some basic idea about Kubernetes (or don’t mind shrugging at a few nitty-gritty details during the talk), I’ll show you, how you can control applications and infrastructure in Kubernetes using Flux and Helm.

1. GitOps with Helm and Flux
Robert Lemke

2. Robert Lemke
Flownative Managing Partner
Neos CMS Project Founder

3. Robert Lemke
Flownative Managing Partner
Neos CMS Project Founder

6. This is a bold headline
Static resources are deployed as part of
the code base. They never change during
runtime. Persistent resources is data
uploaded, created or imported by the
application. Each resource is registered in
the database.

9. GitOps

10. GitOps
declaratively control
infrastructure with Git as
the single source of truth

11. 1. Declarative
2. Versioned and Immutable
3. Pulled Automatically
4. Continuously Reconciled
https://opengitops.dev
GitOps

13. Todo:
◽ create a cluster
◽ install Flux
◽ bootstrap Flux for cluster
◽ deploy resources

14. https://kind.sigs.k8s.io/

19. kubectx
https://github.com/ahmetb/kubectx

20. Todo:
✅ create a cluster
◽ install Flux
◽ bootstrap Flux for cluster
◽ deploy resources

21. https://fluxcd.io

23. Todo:
✅ create a cluster
✅ install Flux
◽ bootstrap Flux for cluster
◽ deploy resources

27. k9s
https://k9scli.io/

28. Todo:
✅ create a cluster
✅ install Flux
✅ bootstrap Flux for cluster
◽ deploy resources

31. Todo:
✅ create a cluster
✅ install Flux
✅ bootstrap Flux for cluster
✅ deploy resources

32. Todo:
✅ create a cluster
✅ install Flux
✅ bootstrap Flux for cluster
✅ deploy resources
◽ deploy an application

33. Toolkit Components
Flux provides controllers
and K8s custom resource
de
fi
nitions as components

34. Illustration taken from: https://fluxcd.io/flux/components/source/

37. Todo:
✅ create a cluster
✅ install Flux
✅ bootstrap Flux for cluster
✅ deploy resources
◽ deploy an application via Helm

41. Todo:
✅ create a cluster
✅ install Flux
✅ bootstrap Flux for cluster
✅ deploy resources
✅ deploy an application via Helm
◽ manage multiple clusters

47. Todo:
✅ create a cluster
✅ install Flux
✅ bootstrap Flux for cluster
✅ deploy resources
✅ deploy an application via Helm
✅ manage multiple clusters
◽ encrypt secrets

48. Sealed Secrets kubeseal
https://sealed-secrets.netlify.app

49. SOPS
https://github.com/mozilla/sops

60. Todo:
✅ create a cluster
✅ install Flux
✅ bootstrap Flux for cluster
✅ deploy resources
✅ deploy an application via Helm
✅ manage multiple clusters
✅ encrypt secrets

62. robert@
fl
ownative.com
www.
fl
ownative.com
@robertlemke
@robert@
fl
ownative.social
Your thoughts?