Target State

You should not treat GitOps as a tool choice. GitOps is an operating model: desired state is expressed declaratively, stored as versioned and immutable history, pulled automatically by software agents and continuously reconciled with actual state. Argo CD and Flux are important implementations, but the principles remain tool-independent.

Focus

• lokale Cluster
• Netzwerk
• Storage
• Controller-Installation
• Git-Server

Core Terms

Working Model

1. Describe desired state in Git, Helm, Kustomize, OCI or another clearly versioned state store.
2. Check which source, commit, path and rendering stage matter.
3. Identify which controller observes the state and which permissions it has in the target cluster.
4. Prove status with Git history, rendered output, controller status, events, conditions and diff.
5. Assess drift, promotion, rollback, secret protection and team approval before syncing.
6. Document whether a change should be reconciled automatically, manually or during a change window.

Reference Commands

# Check Git state
git status --short --branch
git log --oneline --graph --decorate --all

# Render or dry-check manifests locally
kubectl kustomize overlays/dev
kubectl apply --dry-run=client -f manifests/app.yaml
helm template demo charts/demo -f values/dev.yaml

# Use Argo CD and Flux only when controllers are installed
argocd app get demo
argocd app diff demo
argocd app sync demo
flux get sources git
flux get kustomizations
flux reconcile kustomization demo --with-source

Typical Decisions

Operations Notes

• GitOps does not replace CI. CI builds, tests and signs artifacts; GitOps reconciles desired state.
• A controller needs minimal permissions, clear target namespaces and observable conditions.
• Drift is a signal. Not all drift should be overwritten automatically; some drift is incident evidence.
• Secrets do not belong in Git as plaintext. Even encrypted secrets require key management and rotation processes.
• Multi-cluster and multi-tenant GitOps needs boundaries in repository, controller configuration, RBAC and policy.

Scope Boundary

This document covers GitOps principles and Kubernetes-adjacent GitOps implementations. It does not replace production platform documentation, provider guidance or security policy.

Review Checklist for Native Bare Metal Environment

• 01. document desired state: record which source, commit, resource, controller and status are affected.
• 02. identify source and commit: record which source, commit, resource, controller and status are affected.
• 03. explain reconciliation path: record which source, commit, resource, controller and status are affected.
• 04. prove drift: record which source, commit, resource, controller and status are affected.
• 05. check Kustomize or Helm rendering: record which source, commit, resource, controller and status are affected.
• 06. read Argo CD or Flux resource: record which source, commit, resource, controller and status are affected.
• 07. assess promotion risk: record which source, commit, resource, controller and status are affected.
• 08. write down rollback path: record which source, commit, resource, controller and status are affected.
• 09. mark secret boundary: record which source, commit, resource, controller and status are affected.
• 10. check RBAC and tenant boundary: record which source, commit, resource, controller and status are affected.
• 11. name policy impact: record which source, commit, resource, controller and status are affected.
• 12. describe feedback loop: record which source, commit, resource, controller and status are affected.
• 13. document desired state: record which source, commit, resource, controller and status are affected.
• 14. identify source and commit: record which source, commit, resource, controller and status are affected.
• 15. explain reconciliation path: record which source, commit, resource, controller and status are affected.
• 16. prove drift: record which source, commit, resource, controller and status are affected.
• 17. check Kustomize or Helm rendering: record which source, commit, resource, controller and status are affected.
• 18. read Argo CD or Flux resource: record which source, commit, resource, controller and status are affected.
• 19. assess promotion risk: record which source, commit, resource, controller and status are affected.
• 20. write down rollback path: record which source, commit, resource, controller and status are affected.
• 21. mark secret boundary: record which source, commit, resource, controller and status are affected.
• 22. check RBAC and tenant boundary: record which source, commit, resource, controller and status are affected.
• 23. name policy impact: record which source, commit, resource, controller and status are affected.
• 24. describe feedback loop: record which source, commit, resource, controller and status are affected.
• 25. document desired state: record which source, commit, resource, controller and status are affected.
• 26. identify source and commit: record which source, commit, resource, controller and status are affected.
• 27. explain reconciliation path: record which source, commit, resource, controller and status are affected.
• 28. prove drift: record which source, commit, resource, controller and status are affected.
• 29. check Kustomize or Helm rendering: record which source, commit, resource, controller and status are affected.
• 30. read Argo CD or Flux resource: record which source, commit, resource, controller and status are affected.
• 31. assess promotion risk: record which source, commit, resource, controller and status are affected.
• 32. write down rollback path: record which source, commit, resource, controller and status are affected.
• 33. mark secret boundary: record which source, commit, resource, controller and status are affected.
• 34. check RBAC and tenant boundary: record which source, commit, resource, controller and status are affected.
• 35. name policy impact: record which source, commit, resource, controller and status are affected.
• 36. describe feedback loop: record which source, commit, resource, controller and status are affected.
• 37. document desired state: record which source, commit, resource, controller and status are affected.
• 38. identify source and commit: record which source, commit, resource, controller and status are affected.
• 39. explain reconciliation path: record which source, commit, resource, controller and status are affected.
• 40. prove drift: record which source, commit, resource, controller and status are affected.
• 41. check Kustomize or Helm rendering: record which source, commit, resource, controller and status are affected.
• 42. read Argo CD or Flux resource: record which source, commit, resource, controller and status are affected.
• 43. assess promotion risk: record which source, commit, resource, controller and status are affected.
• 44. write down rollback path: record which source, commit, resource, controller and status are affected.

Practice Appendix: Native Bare Metal Environment

This appendix provides a backlog for longer trainings, reviews and repetition. Each task is small enough to verify with local YAML artifacts and a Git repository.

A001. lokale Cluster

• Task: document desired state and explicitly relate the observation to lokale Cluster.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A002. Netzwerk

• Task: identify source and commit and explicitly relate the observation to Netzwerk.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A003. Storage

• Task: explain reconciliation path and explicitly relate the observation to Storage.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A004. Controller-Installation

• Task: prove drift and explicitly relate the observation to Controller-Installation.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A005. Git-Server

• Task: check Kustomize or Helm rendering and explicitly relate the observation to Git-Server.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A006. GitOps

• Task: read Argo CD or Flux resource and explicitly relate the observation to GitOps.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A007. Desired State

• Task: assess promotion risk and explicitly relate the observation to Desired State.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A008. Actual State

• Task: write down rollback path and explicitly relate the observation to Actual State.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A009. Reconciliation

• Task: mark secret boundary and explicitly relate the observation to Reconciliation.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A010. Drift

• Task: check RBAC and tenant boundary and explicitly relate the observation to Drift.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A011. Source of Truth

• Task: name policy impact and explicitly relate the observation to Source of Truth.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A012. Pull Model

• Task: describe feedback loop and explicitly relate the observation to Pull Model.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A013. Argo CD Application

• Task: document desired state and explicitly relate the observation to Argo CD Application.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A014. Argo CD AppProject

• Task: identify source and commit and explicitly relate the observation to Argo CD AppProject.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A015. Flux Source

• Task: explain reconciliation path and explicitly relate the observation to Flux Source.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A016. Flux Kustomization

• Task: prove drift and explicitly relate the observation to Flux Kustomization.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A017. HelmRelease

• Task: check Kustomize or Helm rendering and explicitly relate the observation to HelmRelease.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A018. Kustomize Overlay

• Task: read Argo CD or Flux resource and explicitly relate the observation to Kustomize Overlay.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A019. Promotion

• Task: assess promotion risk and explicitly relate the observation to Promotion.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A020. Progressive Delivery

• Task: write down rollback path and explicitly relate the observation to Progressive Delivery.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A021. Secret Management

• Task: mark secret boundary and explicitly relate the observation to Secret Management.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A022. lokale Cluster

• Task: check RBAC and tenant boundary and explicitly relate the observation to lokale Cluster.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A023. Netzwerk

• Task: name policy impact and explicitly relate the observation to Netzwerk.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A024. Storage

• Task: describe feedback loop and explicitly relate the observation to Storage.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A025. Controller-Installation

• Task: document desired state and explicitly relate the observation to Controller-Installation.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A026. Git-Server

• Task: identify source and commit and explicitly relate the observation to Git-Server.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A027. GitOps

• Task: explain reconciliation path and explicitly relate the observation to GitOps.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A028. Desired State

• Task: prove drift and explicitly relate the observation to Desired State.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A029. Actual State

• Task: check Kustomize or Helm rendering and explicitly relate the observation to Actual State.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A030. Reconciliation

• Task: read Argo CD or Flux resource and explicitly relate the observation to Reconciliation.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A031. Drift

• Task: assess promotion risk and explicitly relate the observation to Drift.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A032. Source of Truth

• Task: write down rollback path and explicitly relate the observation to Source of Truth.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A033. Pull Model

• Task: mark secret boundary and explicitly relate the observation to Pull Model.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A034. Argo CD Application

• Task: check RBAC and tenant boundary and explicitly relate the observation to Argo CD Application.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A035. Argo CD AppProject

• Task: name policy impact and explicitly relate the observation to Argo CD AppProject.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A036. Flux Source

• Task: describe feedback loop and explicitly relate the observation to Flux Source.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A037. Flux Kustomization

• Task: document desired state and explicitly relate the observation to Flux Kustomization.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A038. HelmRelease

• Task: identify source and commit and explicitly relate the observation to HelmRelease.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A039. Kustomize Overlay

• Task: explain reconciliation path and explicitly relate the observation to Kustomize Overlay.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A040. Promotion

• Task: prove drift and explicitly relate the observation to Promotion.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A041. Progressive Delivery

• Task: check Kustomize or Helm rendering and explicitly relate the observation to Progressive Delivery.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A042. Secret Management

• Task: read Argo CD or Flux resource and explicitly relate the observation to Secret Management.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A043. lokale Cluster

• Task: assess promotion risk and explicitly relate the observation to lokale Cluster.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A044. Netzwerk

• Task: write down rollback path and explicitly relate the observation to Netzwerk.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A045. Storage

• Task: mark secret boundary and explicitly relate the observation to Storage.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A046. Controller-Installation

• Task: check RBAC and tenant boundary and explicitly relate the observation to Controller-Installation.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A047. Git-Server

• Task: name policy impact and explicitly relate the observation to Git-Server.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A048. GitOps

• Task: describe feedback loop and explicitly relate the observation to GitOps.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A049. Desired State

• Task: document desired state and explicitly relate the observation to Desired State.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A050. Actual State

• Task: identify source and commit and explicitly relate the observation to Actual State.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A051. Reconciliation

• Task: explain reconciliation path and explicitly relate the observation to Reconciliation.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A052. Drift

• Task: prove drift and explicitly relate the observation to Drift.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A053. Source of Truth

• Task: check Kustomize or Helm rendering and explicitly relate the observation to Source of Truth.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A054. Pull Model

• Task: read Argo CD or Flux resource and explicitly relate the observation to Pull Model.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A055. Argo CD Application

• Task: assess promotion risk and explicitly relate the observation to Argo CD Application.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A056. Argo CD AppProject

• Task: write down rollback path and explicitly relate the observation to Argo CD AppProject.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A057. Flux Source

• Task: mark secret boundary and explicitly relate the observation to Flux Source.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A058. Flux Kustomization

• Task: check RBAC and tenant boundary and explicitly relate the observation to Flux Kustomization.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A059. HelmRelease

• Task: name policy impact and explicitly relate the observation to HelmRelease.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A060. Kustomize Overlay

• Task: describe feedback loop and explicitly relate the observation to Kustomize Overlay.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A061. Promotion

• Task: document desired state and explicitly relate the observation to Promotion.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A062. Progressive Delivery

• Task: identify source and commit and explicitly relate the observation to Progressive Delivery.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A063. Secret Management

• Task: explain reconciliation path and explicitly relate the observation to Secret Management.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A064. lokale Cluster

• Task: prove drift and explicitly relate the observation to lokale Cluster.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A065. Netzwerk

• Task: check Kustomize or Helm rendering and explicitly relate the observation to Netzwerk.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A066. Storage

• Task: read Argo CD or Flux resource and explicitly relate the observation to Storage.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A067. Controller-Installation

• Task: assess promotion risk and explicitly relate the observation to Controller-Installation.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A068. Git-Server

• Task: write down rollback path and explicitly relate the observation to Git-Server.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A069. GitOps

• Task: mark secret boundary and explicitly relate the observation to GitOps.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A070. Desired State

• Task: check RBAC and tenant boundary and explicitly relate the observation to Desired State.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A071. Actual State

• Task: name policy impact and explicitly relate the observation to Actual State.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A072. Reconciliation

• Task: describe feedback loop and explicitly relate the observation to Reconciliation.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A073. Drift

• Task: document desired state and explicitly relate the observation to Drift.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A074. Source of Truth

• Task: identify source and commit and explicitly relate the observation to Source of Truth.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A075. Pull Model

• Task: explain reconciliation path and explicitly relate the observation to Pull Model.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A076. Argo CD Application

• Task: prove drift and explicitly relate the observation to Argo CD Application.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A077. Argo CD AppProject

• Task: check Kustomize or Helm rendering and explicitly relate the observation to Argo CD AppProject.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A078. Flux Source

• Task: read Argo CD or Flux resource and explicitly relate the observation to Flux Source.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A079. Flux Kustomization

• Task: assess promotion risk and explicitly relate the observation to Flux Kustomization.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A080. HelmRelease

• Task: write down rollback path and explicitly relate the observation to HelmRelease.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A081. Kustomize Overlay

• Task: mark secret boundary and explicitly relate the observation to Kustomize Overlay.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A082. Promotion

• Task: check RBAC and tenant boundary and explicitly relate the observation to Promotion.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A083. Progressive Delivery

• Task: name policy impact and explicitly relate the observation to Progressive Delivery.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A084. Secret Management

• Task: describe feedback loop and explicitly relate the observation to Secret Management.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A085. lokale Cluster

• Task: document desired state and explicitly relate the observation to lokale Cluster.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A086. Netzwerk

• Task: identify source and commit and explicitly relate the observation to Netzwerk.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A087. Storage

• Task: explain reconciliation path and explicitly relate the observation to Storage.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

A088. Controller-Installation

• Task: prove drift and explicitly relate the observation to Controller-Installation.
• Evidence: Write down at least one GitOps-adjacent command, one expected result and one limit of that evidence.
• Operations question: What would a wrong assumption change in dev, staging and prod clusters?
• Security question: Which credentials, secrets, roles, signatures or policy rules would be critical?
• Recovery: Explain whether Git revert, sync rollback, suspend, manual drift correction or secret rotation is required.

Official Sources and Scope

The material is aligned with public GitOps and Kubernetes documentation. Argo CD, Flux, Kustomize, Helm, policy controllers and secret tools are positioned where they represent common GitOps workflows. An example artifact is not an installation promise for a specific cluster.

• OpenGitOps: https://opengitops.dev/
• OpenGitOps Principles: https://github.com/open-gitops/documents/blob/main/PRINCIPLES.md
• Argo CD Documentation: https://argo-cd.readthedocs.io/en/stable/
• Argo CD Declarative Setup: https://argo-cd.readthedocs.io/en/stable/operator-manual/declarative-setup/
• Argo CD Project Page: https://argoproj.github.io/cd/
• Flux Documentation: https://fluxcd.io/flux/
• Flux Core Concepts: https://fluxcd.io/flux/concepts/
• CNCF GitOps Certified Associate (CGOA): https://www.cncf.io/training/certification/cgoa/
• Linux Foundation Certified GitOps Associate (CGOA): https://training.linuxfoundation.org/certification/certified-gitops-associate-cgoa/

Additional Review Drills

Use these drills when the primary task is complete and the learner needs another pass over operational reasoning. They are intentionally evidence-oriented and can be answered with local GitOps artifacts.

Drill 01: desired state

• State which source, controller or environment is affected by desired state.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 02: source commit

• State which source, controller or environment is affected by source commit.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 03: reconciliation

• State which source, controller or environment is affected by reconciliation.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 04: drift

• State which source, controller or environment is affected by drift.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 05: Argo CD Application

• State which source, controller or environment is affected by Argo CD Application.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 06: Flux Kustomization

• State which source, controller or environment is affected by Flux Kustomization.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 07: Kustomize overlay

• State which source, controller or environment is affected by Kustomize overlay.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 08: HelmRelease

• State which source, controller or environment is affected by HelmRelease.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 09: secret management

• State which source, controller or environment is affected by secret management.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 10: RBAC boundary

• State which source, controller or environment is affected by RBAC boundary.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 11: policy gate

• State which source, controller or environment is affected by policy gate.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 12: rollback

• State which source, controller or environment is affected by rollback.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 13: desired state

• State which source, controller or environment is affected by desired state.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 14: source commit

• State which source, controller or environment is affected by source commit.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 15: reconciliation

• State which source, controller or environment is affected by reconciliation.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.

Drill 16: drift

• State which source, controller or environment is affected by drift.
• Name one command or manifest field that produces evidence.
• Explain what can be concluded from that evidence and what cannot be concluded from it.
• Describe the safest recovery path for a shared GitOps platform.