191 lines
4.5 KiB
Markdown
191 lines
4.5 KiB
Markdown
# Prometheus
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**🟡 Monitoring Service**
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## 📋 Service Overview
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| Property | Value |
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|----------|-------|
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| **Service Name** | prometheus |
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| **Host** | homelab-vm (192.168.0.210) |
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| **Port** | 9090 |
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| **URL** | `http://192.168.0.210:9090` |
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| **Docker Image** | `prom/prometheus` |
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| **Compose File** | `hosts/vms/homelab-vm/monitoring.yaml` |
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| **Targets** | 14 active (all hosts via node_exporter + SNMP) |
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## 🎯 Purpose
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Prometheus is an open-source systems monitoring and alerting toolkit.
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## 🚀 Quick Start
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### Prerequisites
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- Docker and Docker Compose installed
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- Basic understanding of REDACTED_APP_PASSWORD
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- Access to the host system (setillo)
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### Deployment
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```bash
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# Navigate to service directory
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cd setillo/prometheus
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# Start the service
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docker-compose up -d
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# Check service status
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docker-compose ps
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# View logs
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docker-compose logs -f prometheus
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```
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## 🔧 Configuration
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### Docker Compose Configuration
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```yaml
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command:
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- --storage.tsdb.retention.time=60d
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- --config.file=/etc/prometheus/prometheus.yml
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container_name: Prometheus
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cpu_shares: 768
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healthcheck:
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test: wget --no-verbose --tries=1 --spider http://localhost:9090/ || exit 1
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hostname: prometheus-docker
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image: prom/prometheus
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mem_limit: 1g
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networks:
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- prometheus-net
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ports:
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- 12090:9090
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restart: on-failure:5
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security_opt:
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- no-new-privileges=true
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user: 1027:100
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volumes:
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- /volume1/docker/prometheus/prometheus:/prometheus:rw
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- /volume1/docker/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml:ro
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```
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### Environment Variables
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No environment variables configured.
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### Port Mappings
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| Host Port | Container Port | Protocol | Purpose |
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|-----------|----------------|----------|----------|
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| 12090 | 9090 | TCP | Prometheus metrics |
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### Volume Mappings
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| Host Path | Container Path | Type | Purpose |
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|-----------|----------------|------|----------|
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| `/volume1/docker/prometheus/prometheus` | `/prometheus` | bind | Data storage |
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| `/volume1/docker/prometheus/prometheus.yml` | `/etc/prometheus/prometheus.yml` | bind | Configuration files |
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## 🌐 Access Information
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Service ports: 12090:9090
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## 🔒 Security Considerations
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- ✅ Security options configured
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- ✅ Non-root user configured
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## 📊 Resource Requirements
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No resource limits configured
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### Recommended Resources
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- **Minimum RAM**: 512MB
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- **Recommended RAM**: 1GB+
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- **CPU**: 1 core minimum
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- **Storage**: Varies by usage
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### Resource Monitoring
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Monitor resource usage with:
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```bash
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docker stats
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```
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## 🔍 Health Monitoring
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✅ Health check configured
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**Test Command**: `wget --no-verbose --tries=1 --spider http://localhost:9090/ || exit 1`
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### Manual Health Checks
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```bash
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# Check container health
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docker inspect --format='{{.State.Health.Status}}' CONTAINER_NAME
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# View health check logs
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docker inspect --format='{{range .State.Health.Log}}{{.Output}}{{end}}' CONTAINER_NAME
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```
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## 🚨 Troubleshooting
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### Common Issues
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**Service won't start**
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- Check Docker logs: `docker-compose logs service-name`
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- Verify port availability: `netstat -tulpn | grep PORT`
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- Check file permissions on mounted volumes
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**Can't access web interface**
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- Verify service is running: `docker-compose ps`
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- Check firewall settings
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- Confirm correct port mapping
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**Performance issues**
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- Monitor resource usage: `docker stats`
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- Check available disk space: `df -h`
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- Review service logs for errors
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**Metrics not collecting**
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- Check target endpoints are accessible
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- Verify configuration syntax
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- Check network connectivity
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### Useful Commands
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```bash
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# Check service status
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docker-compose ps
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# View real-time logs
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docker-compose logs -f prometheus
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# Restart service
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docker-compose restart prometheus
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# Update service
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docker-compose pull prometheus
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docker-compose up -d prometheus
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# Access service shell
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docker-compose exec prometheus /bin/bash
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# or
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docker-compose exec prometheus /bin/sh
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```
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## 📚 Additional Resources
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- **Official Documentation**: Check the official docs for prometheus
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- **Docker Hub**: [prom/prometheus](https://hub.docker.com/r/prom/prometheus)
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- **Community Forums**: Search for community discussions and solutions
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- **GitHub Issues**: Check the project's GitHub for known issues
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## 🔗 Related Services
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Services REDACTED_APP_PASSWORD prometheus:
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- Grafana
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- Prometheus
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- Uptime Kuma
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- Node Exporter
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---
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*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.*
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**Last Updated**: 2025-11-17
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**Configuration Source**: `setillo/prometheus/compose.yaml`
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