Observability Stack

• Simple python application, with prometheus exporter and opentelemetry tracer.
• Graylog, Mongo, Elasticsearch, Docker-Compose Gelf log exporter
• Prometheus, Grafana metrics scrape and visualize
• Otel-collector, Jaeger-collector, jaeger-query to get and show traces. SPM is enabled

How to use

1. Pull repository
2. docker compose build
3. docker compose up -d, Try to run this command few times till each dependency start
4. After first docker compose up -d enable GELF Udp input in graylog to make possible to start other applications

application is app, app2 in docker-compose. Application routes:

• /500 - return 500 error
• /404 - return 404 error
• / - return 200 code
• /proxy?url="" - make a request to

You can get any endpoint of application to produce metrics and logs and traces.

Use this command to generate trace with 2 spans

• curl localhost:5000/proxy?url=http://app2:5000/404