Dummy-Distributed-Tracing

This example simple of OpenTelemetry and Prometheus in Go.

It includes trace discovery through Logs and Exemplars.

Steps local

1. Install Loki Docker Driver

docker plugin install grafana/loki-docker-driver:latest --alias loki --grant-all-permissions

2. Build the application.

./build.sh

3. Start everything up.

docker-compose up -d

4. Exercise the application.

curl http://localhost:8000/

5. (Optional) See OpenMetrics Exemplars.

curl -H 'Accept: application/openmetrics-text' http://localhost:8000/metrics | less

6. Discover Traces

From Exemplars:

• Navigate to http://localhost:3000/explore
• Go to the explore page
• Choose the Prometheus datasource and execute histogram_quantile(.99, sum(rate(evm_request_latency_seconds_bucket[1m])) by (le))

From Logs:

• Choose the Loki datasource and execute {container_name="demo-tracing"} | logfmt | latency > 1s

Step Kubernetes

kubectl apply -f manifest.yaml