# helm-validator

> Comprehensive toolkit for validating, linting, testing, and analyzing Helm charts and their rendered Kubernetes resources. Use this skill when working with Helm charts, validating templates, debugging chart issues, working with Custom Resource Definitions (CRDs) that require documentation lookup, or checking Helm best practices.

- Author: Akın Özer
- Repository: akin-ozer/cc-devops-skills
- Version: 20260203135133
- Stars: 58
- Forks: 5
- Last Updated: 2026-02-07
- Source: https://github.com/akin-ozer/cc-devops-skills
- Web: https://mule.run/skillshub/@@akin-ozer/cc-devops-skills~helm-validator:20260203135133

---

# test-crd-chart

A test Helm chart demonstrating Custom Resource Definition (CRD) usage with cert-manager Certificates and Prometheus ServiceMonitors.

## Prerequisites

Before installing this chart, ensure the following are installed in your cluster:

1. **cert-manager** (for Certificate resources)
   ```bash
   kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.13.0/cert-manager.yaml
   ```

2. **Prometheus Operator** (for ServiceMonitor resources)
   ```bash
   helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
   helm install prometheus prometheus-community/kube-prometheus-stack
   ```

3. **ClusterIssuer** named `letsencrypt-prod` for certificate issuance

## Installation

```bash
helm install my-release ./test-crd-chart
```

## Configuration

The following table lists the configurable parameters:

| Parameter | Description | Default |
|-----------|-------------|---------|
| `certManager.enabled` | Enable cert-manager Certificate | `true` |
| `certManager.certificate.dnsNames` | DNS names for the certificate | `["example.com"]` |
| `prometheus.enabled` | Enable Prometheus ServiceMonitor | `true` |

## Values

```yaml
certManager:
  enabled: true
  certificate:
    dnsNames:
      - example.com

prometheus:
  enabled: true
```

## Resources Created

When installed with default values, this chart creates:

- **Certificate** (`cert-manager.io/v1`) - TLS certificate managed by cert-manager
- **ServiceMonitor** (`monitoring.coreos.com/v1`) - Prometheus scrape configuration

## Uninstallation

```bash
helm uninstall my-release
```

## Testing

Validate the chart before installation:

```bash
helm lint ./test-crd-chart
helm template test-release ./test-crd-chart
```