building-gitops-workflows

name	building-gitops-workflows
description	Execute use when constructing GitOps workflows using ArgoCD or Flux. Trigger with phrases like "create GitOps workflow", "setup ArgoCD", "configure Flux", or "automate Kubernetes deployments". Generates production-ready configurations, implements best practices, and ensures security-first approach for continuous deployment.
allowed-tools	Read, Write, Edit, Grep, Glob, Bash(kubectl:*), Bash(git:*)
version	1.22.0
author	Jeremy Longshore <[e-mail]>
license	MIT
tags	["devops","deployment","kubernetes","security"]
compatibility	Designed for Claude Code

Building GitOps Workflows

Overview

Construct GitOps workflows using ArgoCD or Flux to implement declarative, Git-driven continuous delivery for Kubernetes. Generate Application/Kustomization manifests, configure sync policies, set up multi-environment promotion, and implement RBAC and notification integrations.

Prerequisites

• Kubernetes cluster accessible via kubectl with admin permissions
• Git repository for storing Kubernetes manifests (separate from application code recommended)
• ArgoCD or Flux installed on the cluster, or Helm charts ready for installation
• Container images built and pushed to a registry accessible from the cluster
• SSH key or access token for Git repository authentication from the cluster

Instructions

1. Choose the GitOps tool based on requirements: ArgoCD for UI-driven management, Flux for lightweight Git-native approach
2. Design the repository structure: environments/{dev,staging,prod}/ with Kustomize overlays or Helm values per environment
3. Generate ArgoCD Application or Flux Kustomization manifests pointing to the Git repository path for each environment
4. Configure sync policy: enable automated.selfHeal and automated.prune for non-production; use manual sync for production
5. Set up Git repository credentials as a Kubernetes Secret for the GitOps operator
6. Implement environment promotion: update the image tag in staging manifests, test, then promote to production via PR
7. Configure notifications: Slack/email alerts on sync success, failure, or health degradation via ArgoCD Notifications or Flux Alert Provider
8. Add RBAC: restrict who can sync production applications and who can modify GitOps configurations
9. Validate the setup: push a manifest change to Git and verify the GitOps operator detects and applies it within the sync interval

Output

• ArgoCD Application or Flux Kustomization manifests per environment
• Git repository structure with Kustomize bases and overlays
• RBAC configuration (ArgoCD AppProject, Kubernetes RBAC)
• Notification configuration (Slack webhooks, email)
• CI pipeline step to update image tags in the GitOps repository after build

Error Handling

Error	Cause	Solution
ComparisonError: Failed to load target state	Invalid manifest path or Git ref