generating-helm-charts

# Helm Chart Generator This skill provides automated assistance for helm chart generator tasks. ## Prerequisites Before using this skill, ensure: - Helm 3+ is installed on the system - Kubernetes cluster access is configured - Application container images are available - Understanding of application resource requirements - Chart repository access (if publishing) ## Instructions 1. **Gather Requirements**: Identify application type, dependencies, configuration needs 2. **Create Chart Structure**: Generate Chart.yaml with metadata and version info 3. **Define Values**: Create values.yaml with configurable parameters and defaults 4. **Build Templates**: Generate deployment, service, ingress, and configmap templates 5. **Add Helpers**: Create _helpers.tpl for reusable template functions 6. **Configure Resources**: Set resource limits, security contexts, and health checks 7. **Test Chart**: Validate with `helm lint` and `helm template` commands 8. **Document Usage**: Add README with installation instructions and configuration options ## Output Generates complete Helm chart structure: ``` {baseDir}/helm-charts/app-name/ ├── Chart.yaml # Chart metadata ├── values.yaml # Default configuration ├── templates/ │ ├── deployment.yaml │ ├── service.yaml │ ├── ingress.yaml │ ├── configmap.yaml │ ├── _helpers.tpl # Template helpers │ └── NOTES.txt # Post-install notes ├── charts/ # Dependencies └── README.md ``` **Example Chart.yaml:** ```yaml apiVersion: v2 name: my-app description: Production-ready application chart type: application version: 1.0.0 appVersion: "1.0.0" ``` **Example values.yaml:** ```yaml replicaCount: 3 image: repository: registry/app tag: "1.0.0" pullPolicy: IfNotPresent resources: limits: cpu: 500m memory: 512Mi requests: cpu: 250m memory: 256Mi ``` ## Error Handling Common issues and solutions: **Chart Validation Errors** - Error: "Chart.yaml: version is required" - Solution: Ensure Chart.yaml contains valid apiVersion, name, and version fields **Template Rendering Failures** - Error: "parse error in deployment.yaml" - Solution: Validate template syntax with `helm template` and check Go template formatting **Missing Dependencies** - Error: "dependency not found" - Solution: Run `helm dependency update` in chart directory **Values Override Issues** - Error: "failed to render values" - Solution: Check values.yaml syntax and ensure proper YAML indentation **Installation Failures** - Error: "release failed: timed out waiting for condition" - Solution: Increase timeout or check pod logs for application startup issues ## Resources - Helm documentation: https://helm.sh/docs/ - Chart best practices guide: https://helm.sh/docs/chart_best_practices/ - Template function reference: https://helm.sh/docs/chart_template_guide/ - Example charts repository: https://github.com/helm/charts - Chart testing guide in {baseDir}/docs/helm-testing.md ## Overview This skill provides automated assistance for the described functionality. ## Examples Example usage patterns will be demonstrated in context.