Switch from Jaeger to Grafana otel-lgtm

README.md

@@ -31,7 +31,7 @@ To start the app:
 uv run python -m app
 ```
 
-To start the app in Docker with [Jaeger](https://www.jaegertracing.io) to observe traces:
+To start the app in Docker with [Grafana OpenTelemetry LGTM](https://grafana.com/docs/opentelemetry/docker-lgtm):
 
 ```bash
 docker compose up --build

compose.yaml

@@ -2,22 +2,20 @@ services:
   app:
     build: .
     depends_on:
-      jaeger:
+      grafana-otel-lgtm:
         condition: service_healthy
     environment:
       DATA_REFRESH_PERIOD:
-      OTEL_EXPORTER_OTLP_ENDPOINT: http://jaeger:4318
+      OTEL_EXPORTER_OTLP_ENDPOINT: http://grafana-otel-lgtm:4318 # HTTP
     healthcheck:
       start_period: 30s
       test: ["CMD", "python", "-c", "import httpx; httpx.get('http://localhost/actuator/health/readiness').raise_for_status()"]
     ports:
       - "127.0.0.1::80"
 
-  jaeger:
-    image: cr.jaegertracing.io/jaegertracing/jaeger:2.16.0
+  grafana-otel-lgtm:
+    image: grafana/otel-lgtm:0.27.0
     ports:
-      - "127.0.0.1::4318" # OTLP HTTP
-      - "127.0.0.1::16686" # UI
+      - "127.0.0.1::3000" # UI
     healthcheck:
-      start_period: 3s
-      test: ["CMD", "wget", "--quiet", "--spider", "http://localhost:13133/status"]
+      test: ["CMD", "test", "-f", "/tmp/ready"]