A year of GitOps at loveholidays - Dmitri Lerko

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Dmitri Lerko

Deck for the presentation at London DevOps on 4th of July 2019 (https://www.meetup.com/London-DevOps/events/262283493/)

Software

WHAT IS CURRENTLY RUNNING IN YOUR PRODUCTION?

ABOUT ME
▸ Dmitri Lerko
▸ Ask questions https://www.linkedin.com/in/lerko/
▸ I will blog about GitOps here https://deploy.live
▸ GCP, Kubernetes, AWS Certiﬁed

WHAT IS GITOPS?
▸ Push > Pull
▸ Deﬁnition
▸ Making changes

CALL OF HANDS
Photo by Kaleb Nimz on Unsplash

BEFORE CLOUD, KUBERNETES, GITOPS
▸ Physical servers

BEFORE CLOUD, KUBERNETES, GITOPS
▸ Physical servers
▸ KVM VMs

BEFORE CLOUD, KUBERNETES, GITOPS
▸ Physical servers
▸ KVM VMs
▸ Jenkins

BEFORE CLOUD, KUBERNETES, GITOPS
▸ Physical servers
▸ KVM VMs
▸ Jenkins
▸ Ansible

SNOWFLAKEOPS
Photo by Kalle Kortelainen on Unsplash

I LOVE JENKINS
▸ 42 Tabs
▸ 268 Jobs
▸ 142 Plugins

CLOUD NATIVE ERA
Photo by Samuel Zeller on Unsplash

CI/CD GOALS
▸ Full audit trail
▸ Everything as code

CI/CD GOALS
▸ Full audit trail
▸ Everything as code
▸ No cap on concurrency and parallelism

CI/CD GOALS
▸ Full audit trail
▸ Everything as code
▸ No cap on concurrency and parallelism
▸ Minimise conﬁgurational drift

CI/CD GOALS
▸ Full audit trail
▸ Everything as code
▸ No cap on concurrency and parallelism
▸ Minimise conﬁgurational drift
▸ Don’t give CI/CD a wildcard access to your environments

GITOPS IS THE ANSWER
▸ Full audit trail
▸ Everything as code
▸ No cap on concurrency and parallelism
▸ Minimise conﬁgurational drift
▸ Don’t give CI/CD a wildcard access to your environments

POOR MAN’S GITOPS
▸ while true
▸ git pull
▸ kubectl apply -f
▸ sleep 30

BETTER GITOPS
https://github.com/weaveworks/ﬂux

CLOUD NATIVE CI
▸ Google Cloud Build
▸ Minimalistic

CLOUD NATIVE CI
▸ Google Cloud Build
▸ Minimalistic
▸ Unlimited parallel builds

CLOUD NATIVE CI
▸ Google Cloud Build
▸ Minimalistic
▸ Unlimited parallel builds
▸ Declarative

GITOPS BUILD STEP
▸ Use git, hub (GitHub’s CLI), yq (jq for YAML)
▸ Check out GitOps repo with git
▸ Make a branch
▸ Update image version using yq
▸ Commit changes
▸ Push branch
▸ Create a PR with hub
https://github.com/github/hub/releases/

https://github.com/mikefarah/yq/releases/

WHY BOTHER?
▸ Best practices
▸ Developer friendly

WHY BOTHER?
▸ Best practices
▸ Developer friendly
▸ Quick to try

ANY DOWNSIDES?
▸ The incident
▸ Broken YAML manifests upset GitOps

LOVEHOLIDAYS + GITOPS
▸ 11,190
▸ GitHub vs kubectl

FUTURE OF GITOPS AT LOVEHOLIDAYS
▸ Istio for canary and continuous deployments

FUTURE OF GITOPS AT LOVEHOLIDAYS
▸ Istio for canary and continuous deployments
▸ Roll-out https://github.com/weaveworks/kubediff

FUTURE OF GITOPS AT LOVEHOLIDAYS
▸ Istio for canary and continuous deployments
▸ Roll-out https://github.com/weaveworks/kubediff
▸ Teach kubediff how to self-heal violations

HOW TO START
https://github.com/weaveworks/ﬂux

https://www.weave.works/blog/gitops-is-cloud-native

alternatives:

https://argoproj.github.io/argo-cd/

https://razee.io

WE ARE HIRING
CAREERS.LOVEHOLIDAYS.COM
QUESTIONS?

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A year of GitOps at loveholidays - Dmitri Lerko

1. IN PRODUCTION A YEAR OF GITOPS

2. WHAT IS CURRENTLY RUNNING IN YOUR PRODUCTION?

3. ABOUT ME ▸ Dmitri Lerko ▸ Ask questions https://www.linkedin.com/in/lerko/ ▸ I will blog about GitOps here https://deploy.live ▸ GCP, Kubernetes, AWS Certiﬁed

4. WHAT IS GITOPS? ▸ Push > Pull ▸ Deﬁnition ▸ Making changes

5. WHAT IS GITOPS? ▸ Push > Pull ▸ Deﬁnition ▸ Making changes

6. WHAT IS GITOPS? ▸ Push > Pull ▸ Deﬁnition ▸ Making changes

7. CALL OF HANDS Photo by Kaleb Nimz on Unsplash

8. BEFORE CLOUD, KUBERNETES, GITOPS ▸ Physical servers

9. BEFORE CLOUD, KUBERNETES, GITOPS ▸ Physical servers ▸ KVM VMs

10. BEFORE CLOUD, KUBERNETES, GITOPS ▸ Physical servers ▸ KVM VMs ▸ Jenkins

11. BEFORE CLOUD, KUBERNETES, GITOPS ▸ Physical servers ▸ KVM VMs ▸ Jenkins ▸ Ansible

12. CI WITH JENKINS

13. CD WITH JENKINS ▸ Also known as CIOps

14. SNOWFLAKEOPS Photo by Kalle Kortelainen on Unsplash

15. I LOVE JENKINS ▸ 42 Tabs ▸ 268 Jobs ▸ 142 Plugins

16. JENKINS UI ROCKS

17. CLOUD NATIVE ERA Photo by Samuel Zeller on Unsplash

18. CI/CD GOALS ▸ Full audit trail

19. CI/CD GOALS ▸ Full audit trail ▸ Everything as code

20. CI/CD GOALS ▸ Full audit trail ▸ Everything as code ▸ No cap on concurrency and parallelism

21. CI/CD GOALS ▸ Full audit trail ▸ Everything as code ▸ No cap on concurrency and parallelism ▸ Minimise conﬁgurational drift

22. CI/CD GOALS ▸ Full audit trail ▸ Everything as code ▸ No cap on concurrency and parallelism ▸ Minimise conﬁgurational drift ▸ Don’t give CI/CD a wildcard access to your environments

23. GITOPS IS THE ANSWER ▸ Full audit trail ▸ Everything as code ▸ No cap on concurrency and parallelism ▸ Minimise conﬁgurational drift ▸ Don’t give CI/CD a wildcard access to your environments

24. POOR MAN’S GITOPS ▸ while true ▸ git pull ▸ kubectl apply -f ▸ sleep 30

25. BETTER GITOPS https://github.com/weaveworks/ﬂux

26. CLOUD NATIVE CI ▸ Google Cloud Build

27. CLOUD NATIVE CI ▸ Google Cloud Build ▸ Minimalistic

28. CLOUD NATIVE CI ▸ Google Cloud Build ▸ Minimalistic ▸ Unlimited parallel builds

29. CLOUD NATIVE CI ▸ Google Cloud Build ▸ Minimalistic ▸ Unlimited parallel builds ▸ Declarative

30. CLOUD NATIVE CI ▸ Google Cloud Build ▸ Minimalistic ▸ Unlimited parallel builds ▸ Declarative

31. CLOUD NATIVE CI - IN THEORY

32. CLOUD NATIVE CI - IN PRACTICE

33. GITOPS BUILD STEP ▸ Use git, hub (GitHub’s CLI), yq (jq for YAML) ▸ Check out GitOps repo with git ▸ Make a branch ▸ Update image version using yq ▸ Commit changes ▸ Push branch ▸ Create a PR with hub https://github.com/github/hub/releases/ https://github.com/mikefarah/yq/releases/

34. CLOUD NATIVE CD

35. GITOPS IS THE ANSWER ▸ Full audit trail ▸ Everything as code ▸ No cap on concurrency and parallelism ▸ Minimise conﬁgurational drift ▸ Don’t give CI/CD a wildcard access to your environments

36. WHY BOTHER? ▸ Best practices

37. WHY BOTHER? ▸ Best practices ▸ Developer friendly

38. WHY BOTHER? ▸ Best practices ▸ Developer friendly ▸ Quick to try

39. ANY DOWNSIDES? ▸ The incident

40. ANY DOWNSIDES? ▸ The incident ▸ Broken YAML manifests upset GitOps

41. LOVEHOLIDAYS + GITOPS ▸ 11,190

42. LOVEHOLIDAYS + GITOPS ▸ 11,190 ▸ GitHub vs kubectl

43. FUTURE OF GITOPS AT LOVEHOLIDAYS ▸ Istio for canary and continuous deployments

44. FUTURE OF GITOPS AT LOVEHOLIDAYS ▸ Istio for canary and continuous deployments ▸ Roll-out https://github.com/weaveworks/kubediff

45. FUTURE OF GITOPS AT LOVEHOLIDAYS ▸ Istio for canary and continuous deployments ▸ Roll-out https://github.com/weaveworks/kubediff ▸ Teach kubediff how to self-heal violations

46. HOW TO START https://github.com/weaveworks/ﬂux https://www.weave.works/blog/gitops-is-cloud-native alternatives: https://argoproj.github.io/argo-cd/ https://razee.io

47. WE ARE HIRING CAREERS.LOVEHOLIDAYS.COM QUESTIONS?

A year of GitOps at loveholidays - Dmitri Lerko

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A year of GitOps at loveholidays - Dmitri Lerko