2304c3ed12
- FastAPI application with OpenTelemetry instrumentation - Redis caching and Celery task processing - Docker Compose setup with monitoring stack - Grafana dashboards and Prometheus metrics - Jaeger distributed tracing - Comprehensive documentation in docs/ folder - Monitoring configuration and troubleshooting guides
112 lines
3.3 KiB
Markdown
112 lines
3.3 KiB
Markdown
# 🚀 DevServer Monitoring - Quick Reference Card
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## 📊 Monitoring Dashboards
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| Service | URL | Credentials | Purpose |
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|---------|-----|-------------|---------|
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| **Grafana** | http://localhost:3000 | admin / admin123 | Main dashboards & visualization |
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| **Prometheus** | http://localhost:9090 | None | Metrics & queries |
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| **Prometheus Targets** | http://localhost:9090/targets | None | Check scrape status |
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| **Jaeger** | http://localhost:16686 | None | Distributed tracing |
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| **cAdvisor** | http://localhost:8080 | None | Container metrics |
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| **RabbitMQ** | http://localhost:15672 | guest / guest | Queue management |
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| **FastAPI** | http://localhost:8000 | None | API endpoints |
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| **FastAPI Docs** | http://localhost:8000/docs | None | Interactive API docs |
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## 🎯 Active Prometheus Targets (7 services)
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### ✅ Working (5/7)
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- ✅ prometheus (self-monitoring)
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- ✅ rabbitmq (message queue)
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- ✅ loki (logs)
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- ✅ cadvisor (containers)
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- ✅ jaeger (traces)
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### ⏳ Initializing (2/7)
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- ⏳ fastapi-app (starting up - may take 30-60s)
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- ⏳ otel-collector (initializing telemetry pipeline)
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## 🔧 Common Commands
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```powershell
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# Check all services
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docker-compose ps
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# View logs
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docker-compose logs -f devserver
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docker-compose logs -f prometheus
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# Restart services
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docker-compose restart prometheus grafana
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# System health check
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uv run python system_monitor.py
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# Test API
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Invoke-WebRequest -Uri "http://localhost:8000/health" -Method GET
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Invoke-WebRequest -Uri "http://localhost:8000/metrics" -Method GET
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# Generate test data
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Invoke-WebRequest -Uri "http://localhost:8000/api/dice/roll" -Method GET
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Invoke-WebRequest -Uri "http://localhost:8000/api/tasks/fibonacci?n=15" -Method POST
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```
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## 📈 Key Metrics to Monitor
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| Metric | Normal Range | Alert If |
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|--------|--------------|----------|
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| **API Response Time (p95)** | < 500ms | > 1000ms |
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| **Error Rate** | < 1% | > 5% |
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| **Cache Hit Rate** | > 80% | < 50% |
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| **CPU Usage** | < 70% | > 90% |
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| **Memory Usage** | Stable | Constantly growing |
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| **Queue Depth** | Near 0 | > 100 |
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## 🎯 Grafana Dashboards
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1. **Complete System Monitoring**
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- Service health status
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- API metrics
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- Cache performance
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- Container resources
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2. **DevServer Observability**
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- Request rates
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- Response times
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- Error tracking
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## 🔍 Troubleshooting Quick Fixes
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| Issue | Solution |
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|-------|----------|
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| Service down | `docker-compose restart <service>` |
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| Slow API | Check Jaeger traces at http://localhost:16686 |
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| High errors | Check logs: `docker-compose logs devserver` |
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| Metrics not updating | Restart Prometheus: `docker-compose restart prometheus` |
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| Grafana not loading | `docker-compose restart grafana` |
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| Target shows "down" | Wait 60s or check: `docker-compose logs <service>` |
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## 📦 Services Summary
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**Total:** 11 containers
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**Core App:** 4 services (FastAPI, Celery, Redis, RabbitMQ)
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**Monitoring:** 7 services (Prometheus, Grafana, Jaeger, Loki, Promtail, OTEL, cAdvisor)
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## ✨ Features
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- ✅ Automatic OpenTelemetry tracing
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- ✅ Redis caching with TTL
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- ✅ Real-time metrics (15s intervals)
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- ✅ Centralized logging
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- ✅ Container monitoring
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- ✅ Distributed tracing
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- ✅ Auto-provisioned dashboards
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- ✅ Zero manual configuration
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## 🎊 Status: FULLY OPERATIONAL
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**Last Updated:** October 13, 2025
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**All Services:** ✅ RUNNING
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**Monitoring:** ✅ ACTIVE
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**Dashboards:** ✅ READY
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