Sanitized mirror from private repository - 2026-04-06 10:21:40 UTC

docs/services/individual/node-exporter.md

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+# Node Exporter
+
+**🟢 Monitoring Service**
+
+## 📋 Service Overview
+
+| Property | Value |
+|----------|-------|
+| **Service Name** | node_exporter |
+| **Host** | homelab_vm |
+| **Category** | Monitoring |
+| **Difficulty** | 🟢 |
+| **Docker Image** | `prom/node-exporter:latest` |
+| **Compose File** | `homelab_vm/prometheus_grafana_hub/docker-compose.yml` |
+| **Directory** | `homelab_vm/prometheus_grafana_hub` |
+
+## 🎯 Purpose
+
+node_exporter is a monitoring and observability tool that helps track system performance and health.
+
+## 🚀 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 node_exporter
+```
+
+## 🔧 Configuration
+
+### Docker Compose Configuration
+```yaml
+container_name: node_exporter
+image: prom/node-exporter:latest
+ports:
+- 9100:9100
+restart: unless-stopped
+
+```
+
+### Environment Variables
+No environment variables configured.
+
+### Port Mappings
+| Host Port | Container Port | Protocol | Purpose |
+|-----------|----------------|----------|----------|
+| 9100 | 9100 | TCP | Service port |
+
+
+### Volume Mappings
+No volumes mounted.
+
+## 🌐 Access Information
+
+Service ports: 9100:9100
+
+## 🔒 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 node_exporter
+
+# Restart service
+docker-compose restart node_exporter
+
+# Update service
+docker-compose pull node_exporter
+docker-compose up -d node_exporter
+
+# Access service shell
+docker-compose exec node_exporter /bin/bash
+# or
+docker-compose exec node_exporter /bin/sh
+```
+
+## 📚 Additional Resources
+
+- **Official Documentation**: Check the official docs for node_exporter
+- **Docker Hub**: [prom/node-exporter:latest](https://hub.docker.com/r/prom/node-exporter:latest)
+- **Community Forums**: Search for community discussions and solutions
+- **GitHub Issues**: Check the project's GitHub for known issues
+
+## 🔗 Related Services
+
+Services REDACTED_APP_PASSWORD node_exporter:
+- 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`