Initial commit

This commit is contained in:
Zhongwei Li
2025-11-29 17:56:41 +08:00
commit 9427ed1eea
40 changed files with 15189 additions and 0 deletions

View File

@@ -0,0 +1,308 @@
**Name:** hetzner-provisioner
**Type:** Infrastructure / DevOps
**Model:** Claude Sonnet 4.5 (balanced for IaC generation)
**Status:** Planned
---
## Overview
Automated Hetzner Cloud infrastructure provisioning using Terraform or Pulumi. Generates production-ready IaC code for deploying SaaS applications at $10-15/month instead of $50-100/month on Vercel/AWS.
## When This Skill Activates
**Keywords**: deploy on Hetzner, Hetzner Cloud, budget deployment, cheap hosting, $10/month, cost-effective infrastructure
**Example prompts**:
- "Deploy my NextJS app on Hetzner"
- "I want the cheapest possible hosting for my SaaS"
- "Set up infrastructure on Hetzner Cloud with Postgres"
- "Deploy for under $15/month"
## What It Generates
### 1. Terraform Configuration
**main.tf**:
```hcl
terraform {
required_providers {
hcloud = {
source = "hetznercloud/hcloud"
version = "~> 1.45"
}
}
}
provider "hcloud" {
token = var.hcloud_token
}
# Server instance
resource "hcloud_server" "app" {
name = "my-saas-app"
server_type = "cx11"
image = "ubuntu-22.04"
location = "nbg1" # Nuremberg, Germany
user_data = file("${path.module}/cloud-init.yaml")
public_net {
ipv4_enabled = true
ipv6_enabled = true
}
}
# Managed Postgres database
resource "hcloud_database" "postgres" {
name = "my-saas-db"
engine = "postgresql"
version = "15"
size = "db-1x-small"
location = "nbg1"
}
# Firewall
resource "hcloud_firewall" "app" {
name = "my-saas-firewall"
rule {
direction = "in"
protocol = "tcp"
port = "80"
source_ips = ["0.0.0.0/0", "::/0"]
}
rule {
direction = "in"
protocol = "tcp"
port = "443"
source_ips = ["0.0.0.0/0", "::/0"]
}
rule {
direction = "in"
protocol = "tcp"
port = "22"
source_ips = ["0.0.0.0/0", "::/0"] # Restrict to your IP in production
}
}
# Apply firewall to server
resource "hcloud_firewall_attachment" "app" {
firewall_id = hcloud_firewall.app.id
server_ids = [hcloud_server.app.id]
}
# Output deployment info
output "server_ip" {
value = hcloud_server.app.ipv4_address
}
output "database_host" {
value = hcloud_database.postgres.host
}
output "database_port" {
value = hcloud_database.postgres.port
}
```
### 2. Docker Configuration
**Dockerfile**:
```dockerfile
FROM node:20-alpine AS base
# Dependencies
FROM base AS deps
WORKDIR /app
COPY package*.json ./
RUN npm ci
# Builder
FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build
# Runner
FROM base AS runner
WORKDIR /app
ENV NODE_ENV production
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs
COPY --from=builder /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
USER nextjs
EXPOSE 3000
ENV PORT 3000
CMD ["node", "server.js"]
```
### 3. GitHub Actions CI/CD
**.github/workflows/deploy.yml**:
```yaml
name: Deploy to Hetzner
on:
push:
branches: [main]
jobs:
deploy:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Setup Terraform
uses: hashicorp/setup-terraform@v3
- name: Terraform Init
run: terraform init
working-directory: ./terraform
env:
HCLOUD_TOKEN: ${{ secrets.HETZNER_API_TOKEN }}
- name: Terraform Plan
run: terraform plan
working-directory: ./terraform
env:
HCLOUD_TOKEN: ${{ secrets.HETZNER_API_TOKEN }}
- name: Terraform Apply
run: terraform apply -auto-approve
working-directory: ./terraform
env:
HCLOUD_TOKEN: ${{ secrets.HETZNER_API_TOKEN }}
- name: Build and Deploy Docker
run: |
ssh ${{ secrets.SERVER_USER }}@${{ secrets.SERVER_IP }} << 'EOF'
cd /app
git pull
docker-compose build
docker-compose up -d
EOF
```
### 4. SSL Configuration (Let's Encrypt)
**nginx.conf** (auto-generated):
```nginx
server {
listen 80;
server_name your-domain.com;
return 301 https://$server_name$request_uri;
}
server {
listen 443 ssl http2;
server_name your-domain.com;
ssl_certificate /etc/letsencrypt/live/your-domain.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/your-domain.com/privkey.pem;
location / {
proxy_pass http://localhost:3000;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
}
```
## Cost Breakdown
### Small SaaS (100-1000 users)
- **CX11** (1 vCPU, 2GB RAM): $5.83/month
- **Managed Postgres** (2GB): $5.00/month
- **Storage** (20GB): $0.50/month
- **SSL** (Let's Encrypt): Free
- **Total**: ~$11.33/month
### Medium SaaS (1000-10000 users)
- **CX21** (2 vCPU, 4GB RAM): $6.90/month
- **Managed Postgres** (4GB): $10.00/month
- **Storage** (40GB): $1.00/month
- **Total**: ~$18/month
### Large SaaS (10000+ users)
- **CX31** (2 vCPU, 8GB RAM): $14.28/month
- **Managed Postgres** (8GB): $20.00/month
- **Storage** (80GB): $2.00/month
- **Total**: ~$36/month
## Test Cases
### Test 1: Basic Provision
**File**: `test-cases/test-1-basic-provision.yaml`
**Scenario**: Provision CX11 instance with Docker
**Expected**: Terraform code generated, cost ~$6/month
### Test 2: Postgres Provision
**File**: `test-cases/test-2-postgres-provision.yaml`
**Scenario**: Add managed Postgres database
**Expected**: Database resource added, cost ~$11/month
### Test 3: SSL Configuration
**File**: `test-cases/test-3-ssl-config.yaml`
**Scenario**: Configure SSL with Let's Encrypt
**Expected**: Nginx + Certbot configuration, HTTPS working
## Verification Steps
See `test-results/README.md` for:
1. How to run each test case
2. Expected vs actual output
3. Manual verification steps
4. Screenshots of successful deployment
## Integration with Other Skills
- **cost-optimizer**: Recommends Hetzner when budget <$20/month
- **devops-agent**: Provides strategic infrastructure planning
- **nextjs-agent**: NextJS-specific deployment configuration
- **nodejs-backend**: Node.js app deployment
- **monitoring-setup**: Adds Uptime Kuma monitoring
## Limitations
- **EU-only**: Data centers in Germany/Finland (GDPR-friendly but not global)
- **No auto-scaling**: Manual scaling only (upgrade instance type)
- **Single-region**: Multi-region requires manual setup
- **No serverless**: Traditional VM-based hosting
## Alternatives
When NOT to use Hetzner:
- **Global audience**: Use Vercel (global edge network)
- **Auto-scaling needed**: Use AWS/GCP
- **Serverless preferred**: Use Vercel/Netlify
- **Enterprise SLA required**: Use AWS/Azure with support plans
## Future Enhancements
- [ ] Kubernetes (k3s) cluster setup
- [ ] Load balancer configuration
- [ ] Multi-region deployment
- [ ] Auto-scaling with Hetzner Cloud API
- [ ] Monitoring integration (Grafana + Prometheus)
- [ ] Disaster recovery automation
---
**Status**: Planned (Increment 003)
**Priority**: P1
**Tests**: 3+ test cases required
**Documentation**: `.specweave/docs/guides/hetzner-deployment.md`

View File

@@ -0,0 +1,251 @@
---
name: hetzner-provisioner
description: Provisions infrastructure on Hetzner Cloud with Terraform/Pulumi. Generates IaC code for CX11/CX21/CX31 instances, managed Postgres, SSL configuration, Docker deployment. Activates for deploy on Hetzner, Hetzner Cloud, budget deployment, cheap hosting, $10/month hosting.
---
# Hetzner Cloud Provisioner
Automated infrastructure provisioning for Hetzner Cloud - the budget-friendly alternative to Vercel and AWS.
## Purpose
Generate and deploy infrastructure-as-code (Terraform/Pulumi) for Hetzner Cloud, enabling $10-15/month SaaS deployments instead of $50-100/month on other platforms.
## When to Use
Activates when user mentions:
- "deploy on Hetzner"
- "Hetzner Cloud"
- "budget deployment"
- "cheap hosting"
- "deploy for $10/month"
- "cost-effective infrastructure"
## What It Does
1. **Analyzes requirements**:
- Application type (NextJS, Node.js, Python, etc.)
- Database needs (Postgres, MySQL, Redis)
- Expected traffic/users
- Budget constraints
2. **Generates Infrastructure-as-Code**:
- Terraform configuration for Hetzner Cloud
- Alternative: Pulumi for TypeScript-native IaC
- Server instances (CX11, CX21, CX31)
- Managed databases (Postgres, MySQL)
- Object storage (if needed)
- Networking (firewall rules, floating IPs)
3. **Configures Production Setup**:
- Docker containerization
- SSL certificates (Let's Encrypt)
- DNS configuration (Cloudflare or Hetzner DNS)
- GitHub Actions CI/CD pipeline
- Monitoring (Uptime Kuma, self-hosted)
- Automated backups
4. **Outputs Deployment Guide**:
- Step-by-step deployment instructions
- Cost breakdown
- Monitoring URLs
- Troubleshooting guide
---
## ⚠️ CRITICAL: Secrets Required (MANDATORY CHECK)
**BEFORE generating Terraform/Pulumi code, CHECK for Hetzner API token.**
### Step 1: Check If Token Exists
```bash
# Check .env file
if [ -f .env ] && grep -q "HETZNER_API_TOKEN" .env; then
echo "✅ Hetzner API token found"
else
# Token NOT found - STOP and prompt user
fi
```
### Step 2: If Token Missing, STOP and Show This Message
```
🔐 **Hetzner API Token Required**
I need your Hetzner API token to provision infrastructure.
**How to get it**:
1. Go to: https://console.hetzner.cloud/
2. Click on your project (or create one)
3. Navigate to: Security → API Tokens
4. Click "Generate API Token"
5. Give it a name (e.g., "specweave-deployment")
6. Permissions: **Read & Write**
7. Click "Generate"
8. **Copy the token immediately** (you can't see it again!)
**Where I'll save it**:
- File: `.env` (gitignored, secure)
- Format: `HETZNER_API_TOKEN=your-token-here`
**Security**:
✅ .env is in .gitignore (never committed to git)
✅ Token is 64 characters, alphanumeric
✅ Stored locally only (not in source code)
Please paste your Hetzner API token:
```
### Step 3: Validate Token Format
```bash
# Hetzner tokens are 64 alphanumeric characters
if [[ ! "$HETZNER_API_TOKEN" =~ ^[a-zA-Z0-9]{64}$ ]]; then
echo "⚠️ Warning: Token format unexpected"
echo "Expected: 64 alphanumeric characters"
echo "Got: ${#HETZNER_API_TOKEN} characters"
echo ""
echo "This might not be a valid Hetzner API token."
echo "Continue anyway? (yes/no)"
fi
```
### Step 4: Save Token Securely
```bash
# Save to .env
echo "HETZNER_API_TOKEN=$HETZNER_API_TOKEN" >> .env
# Ensure .env is gitignored
if ! grep -q "^\.env$" .gitignore; then
echo ".env" >> .gitignore
fi
# Create .env.example for team
cat > .env.example << 'EOF'
# Hetzner Cloud API Token
# Get from: https://console.hetzner.cloud/ → Security → API Tokens
HETZNER_API_TOKEN=your-hetzner-token-here
EOF
echo "✅ Token saved to .env (gitignored)"
echo "✅ Created .env.example for team (commit this)"
```
### Step 5: Use Token in Terraform
```hcl
# terraform/variables.tf
variable "hetzner_token" {
description = "Hetzner Cloud API Token"
type = string
sensitive = true
}
# terraform/provider.tf
provider "hcloud" {
token = var.hetzner_token
}
# Run Terraform
# export TF_VAR_hetzner_token=$HETZNER_API_TOKEN
# terraform apply
```
---
## Example Usage
**User**: "Deploy my NextJS app on Hetzner with Postgres, as cheaply as possible"
**hetzner-provisioner**:
```markdown
I'll provision your NextJS app on Hetzner Cloud for ~$12/month.
Infrastructure:
- CX11 instance (2 vCPU, 2GB RAM): $5.83/month
- Managed Postgres (2GB): $5.00/month
- 20GB storage: $0.50/month
- SSL (Let's Encrypt): Free
- Total: ~$11.33/month
Creating Terraform configuration...
✅ Generated files:
- terraform/main.tf
- terraform/variables.tf
- terraform/outputs.tf
- .github/workflows/deploy.yml
Next steps:
1. Set HETZNER_API_TOKEN in GitHub secrets
2. Push to GitHub
3. GitHub Actions will deploy automatically
Deployment URL: https://your-app.yourdomain.com (after DNS configured)
```
## Configuration
Supports multiple instance types:
- **CX11** (1 vCPU, 2GB RAM): $5.83/month - Small apps, 100-1000 users
- **CX21** (2 vCPU, 4GB RAM): $6.90/month - Medium apps, 1000-10000 users
- **CX31** (2 vCPU, 8GB RAM): $14.28/month - Larger apps, 10000+ users
Database options:
- Managed Postgres (2GB): $5/month
- Managed MySQL (2GB): $5/month
- Self-hosted (included in instance cost)
## Test Cases
See `test-cases/` for validation scenarios:
1. **test-1-basic-provision.yaml** - Basic CX11 instance
2. **test-2-postgres-provision.yaml** - Add managed Postgres
3. **test-3-ssl-config.yaml** - SSL and DNS configuration
## Cost Comparison
| Platform | Small App | Medium App | Large App |
|----------|-----------|------------|-----------|
| **Hetzner** | $12/mo | $15/mo | $25/mo |
| Vercel | $60/mo | $120/mo | $240/mo |
| AWS | $25/mo | $80/mo | $200/mo |
| Railway | $20/mo | $50/mo | $100/mo |
**Savings**: 50-80% vs alternatives
## Technical Details
**Terraform Provider**: `hetznercloud/hcloud`
**API**: Hetzner Cloud API v1
**Regions**: Nuremberg, Falkenstein, Helsinki (Germany/Finland)
**Deployment**: Docker + GitHub Actions
**Monitoring**: Uptime Kuma (self-hosted, free)
## Integration
Works with:
- `cost-optimizer` - Recommends Hetzner when budget-conscious
- `devops-agent` - Strategic infrastructure planning
- `nextjs-agent` - NextJS-specific deployment
- Any backend framework (Node.js, Python, Go, etc.)
## Limitations
- EU-only data centers (GDPR-friendly)
- Requires Hetzner Cloud account
- Manual DNS configuration needed
- Not suitable for multi-region deployments (use AWS/GCP for that)
## Future Enhancements
- Kubernetes support (k3s on Hetzner)
- Load balancer configuration
- Multi-region deployment
- Disaster recovery setup
---
**For detailed usage**, see `README.md` and test cases in `test-cases/`