From 9fbb8509feb72e26c76cd8ec62b336c9fa0d0b71 Mon Sep 17 00:00:00 2001
From: Thibault Derousseaux <6574550+tibdex@users.noreply.github.com>
Date: Wed, 6 May 2026 16:43:54 -0400
Subject: [PATCH 1/2] Switch from Jaeger to Aspire Dashboard

To get logs and metrics too.
---
 README.md    |  2 +-
 compose.yaml | 17 +++++++----------
 2 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/README.md b/README.md
index 878cd0f..6d9e1d2 100644
--- a/README.md
+++ b/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 the [Aspire Dashboard](https://aspire.dev/dashboard/standalone/) to observe traces:
 
 ```bash
 docker compose up --build
diff --git a/compose.yaml b/compose.yaml
index 5607923..369fdfa 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -2,22 +2,19 @@ services:
   app:
     build: .
     depends_on:
-      jaeger:
-        condition: service_healthy
+      - aspire-dashboard
     environment:
       DATA_REFRESH_PERIOD:
-      OTEL_EXPORTER_OTLP_ENDPOINT: http://jaeger:4318
+      OTEL_EXPORTER_OTLP_ENDPOINT: http://aspire-dashboard:18890
     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
+  aspire-dashboard:
+    image: mcr.microsoft.com/dotnet/aspire-dashboard:13.2.0
+    environment:
+      ASPIRE_DASHBOARD_UNSECURED_ALLOW_ANONYMOUS: "true"
     ports:
-      - "127.0.0.1::4318" # OTLP HTTP
-      - "127.0.0.1::16686" # UI
-    healthcheck:
-      start_period: 3s
-      test: ["CMD", "wget", "--quiet", "--spider", "http://localhost:13133/status"]
+      - "127.0.0.1::18888" # UI

From d461976f7fe712c5c9731a61fff58d64d4ce4e51 Mon Sep 17 00:00:00 2001
From: Thibault Derousseaux <6574550+tibdex@users.noreply.github.com>
Date: Thu, 7 May 2026 13:02:24 -0400
Subject: [PATCH 2/2] Switch to Grafana otel-lgtm

---
 README.md    |  2 +-
 compose.yaml | 15 ++++++++-------
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/README.md b/README.md
index 6d9e1d2..8dd80e8 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ To start the app:
 uv run python -m app
 ```
 
-To start the app in Docker with the [Aspire Dashboard](https://aspire.dev/dashboard/standalone/) 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
diff --git a/compose.yaml b/compose.yaml
index 369fdfa..c9b7ebb 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -2,19 +2,20 @@ services:
   app:
     build: .
     depends_on:
-      - aspire-dashboard
+      grafana-otel-lgtm:
+        condition: service_healthy
     environment:
       DATA_REFRESH_PERIOD:
-      OTEL_EXPORTER_OTLP_ENDPOINT: http://aspire-dashboard:18890
+      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"
 
-  aspire-dashboard:
-    image: mcr.microsoft.com/dotnet/aspire-dashboard:13.2.0
-    environment:
-      ASPIRE_DASHBOARD_UNSECURED_ALLOW_ANONYMOUS: "true"
+  grafana-otel-lgtm:
+    image: grafana/otel-lgtm:0.27.0
     ports:
-      - "127.0.0.1::18888" # UI
+      - "127.0.0.1::3000" # UI
+    healthcheck:
+      test: ["CMD", "test", "-f", "/tmp/ready"]