# Grafana

**🟡 Monitoring Service**

## 📋 Service Overview

| Property | Value |
|----------|-------|
| **Service Name** | grafana |
| **Host** | homelab_vm |
| **Category** | Monitoring |
| **Difficulty** | 🟡 |
| **Docker Image** | `grafana/grafana-oss:latest` |
| **Compose File** | `homelab_vm/prometheus_grafana_hub/docker-compose.yml` |
| **Directory** | `homelab_vm/prometheus_grafana_hub` |

## 🎯 Purpose

Grafana is the open source analytics & monitoring solution for every database.

## 🚀 Quick Start

### Prerequisites
- Docker and Docker Compose installed
- Basic understanding of REDACTED_APP_PASSWORD
- Access to the host system (homelab_vm)

### Deployment
```bash
# Navigate to service directory
cd homelab_vm/prometheus_grafana_hub

# Start the service
docker-compose up -d

# Check service status
docker-compose ps

# View logs
docker-compose logs -f grafana
```

## 🔧 Configuration

### Docker Compose Configuration
```yaml
container_name: grafana
environment:
- GF_SECURITY_ADMIN_USER=admin
- GF_SECURITY_ADMIN_PASSWORD="REDACTED_PASSWORD"
image: grafana/grafana-oss:latest
ports:
- 3300:3000
restart: unless-stopped
volumes:
- grafana-data:/var/lib/grafana

```

### Environment Variables
| Variable | Value | Description |
|----------|-------|-------------|
| `GF_SECURITY_ADMIN_USER` | `admin` | Configuration variable |
| `GF_SECURITY_ADMIN_PASSWORD` | `***MASKED***` | Administrator password |


### Port Mappings
| Host Port | Container Port | Protocol | Purpose |
|-----------|----------------|----------|----------|
| 3300 | 3000 | TCP | Web interface |


### Volume Mappings
| Host Path | Container Path | Type | Purpose |
|-----------|----------------|------|----------|
| `grafana-data` | `/var/lib/grafana` | volume | Service data |


## 🌐 Access Information

### Web Interface
- **HTTP**: `http://homelab_vm:3300`

### Default Credentials
Username: `admin`, Password: "REDACTED_PASSWORD" (change on first login)

## 🔒 Security Considerations

- ⚠️ Consider adding security options (no-new-privileges)
- ⚠️ Consider running as non-root user

## 📊 Resource Requirements

No resource limits configured

### Recommended Resources
- **Minimum RAM**: 512MB
- **Recommended RAM**: 1GB+
- **CPU**: 1 core minimum
- **Storage**: Varies by usage

### Resource Monitoring
Monitor resource usage with:
```bash
docker stats
```

## 🔍 Health Monitoring

⚠️ No health check configured
Consider adding a health check:
```yaml
healthcheck:
  test: ["CMD", "curl", "-f", "http://localhost:PORT/health"]
  interval: 30s
  timeout: 10s
  retries: 3
```

### Manual Health Checks
```bash
# Check container health
docker inspect --format='{{.State.Health.Status}}' CONTAINER_NAME

# View health check logs
docker inspect --format='{{range .State.Health.Log}}{{.Output}}{{end}}' CONTAINER_NAME
```

## 🚨 Troubleshooting

### Common Issues
**Service won't start**
- Check Docker logs: `docker-compose logs service-name`
- Verify port availability: `netstat -tulpn | grep PORT`
- Check file permissions on mounted volumes

**Can't access web interface**
- Verify service is running: `docker-compose ps`
- Check firewall settings
- Confirm correct port mapping

**Performance issues**
- Monitor resource usage: `docker stats`
- Check available disk space: `df -h`
- Review service logs for errors

**Metrics not collecting**
- Check target endpoints are accessible
- Verify configuration syntax
- Check network connectivity

### Useful Commands
```bash
# Check service status
docker-compose ps

# View real-time logs
docker-compose logs -f grafana

# Restart service
docker-compose restart grafana

# Update service
docker-compose pull grafana
docker-compose up -d grafana

# Access service shell
docker-compose exec grafana /bin/bash
# or
docker-compose exec grafana /bin/sh
```

## 📚 Additional Resources

- **Official Documentation**: Check the official docs for grafana
- **Docker Hub**: [grafana/grafana-oss:latest](https://hub.docker.com/r/grafana/grafana-oss:latest)
- **Community Forums**: Search for community discussions and solutions
- **GitHub Issues**: Check the project's GitHub for known issues
- **Grafana Documentation**: https://grafana.com/docs/
- **Grafana Community**: https://community.grafana.com/

## 🔗 Related Services

Services REDACTED_APP_PASSWORD grafana:
- Grafana
- Prometheus
- Uptime Kuma
- Node Exporter

---

*This documentation is auto-generated from the Docker Compose configuration. For the most up-to-date information, refer to the official documentation and the actual compose file.*

**Last Updated**: 2025-11-17  
**Configuration Source**: `homelab_vm/prometheus_grafana_hub/docker-compose.yml`