6473 add otel config

README.md

@@ -49,6 +49,7 @@ This is a [Docker Compose](https://docs.docker.com/compose/) configuration that
 - Narcissus screenshot service (container `narcissus`) at [http://localhost:8687](http://localhost:8687)
 - Fetch fact-checking service (container `fetch`) at [http://localhost:8687/about](http://localhost:8687/about)
 - Search v2 prototype application (container `search`) at [http://localhost:8001](http://localhost:8001)
+- Otel Collector – you can configure receivers, processors and exporters in the otel-collector-config.yaml
 
 ## Testing
 

docker-compose.yml

@@ -126,6 +126,8 @@ services:
     extra_hosts:
       - "host.docker.internal:host-gateway"
   pender:
+    # env_file:
+    #   - ./pender/.env
     build: pender
     platform: linux/x86_64
     shm_size: 1G
@@ -160,13 +162,13 @@ services:
       SERVER_PORT: 3200
     networks:
       - dev
+  # If you want to run the OpenTelemetry Collector, uncomment the lines below
   # otel-collector:
   #   image: otel/opentelemetry-collector-contrib
   #   volumes:
-  #     - ./pender/config/otel-collector-config.yaml:/etc/otelcol-contrib/config.yaml
-  #   depends_on:
-  #     - pender
+  #     - ./otel-collector-config.yaml:/etc/otelcol-contrib/config.yaml
   #   environment:
+  #     x_honeycomb_team: ${X_HONEYCOMB_TEAM} # Set this env var in your shell before running docker-compose
   #     RAILS_ENV: development
   #     SERVER_PORT: 3200
   #   networks:

otel-collector-config.yaml

@@ -0,0 +1,35 @@
+receivers:
+  prometheus:
+    config:
+      scrape_configs:
+        - job_name: "prometheus"
+          scrape_interval: 15s
+          static_configs:
+            - targets: ["pender:3200"]
+
+processors:
+  memory_limiter:
+    check_interval: 1s
+    limit_percentage: 80
+    spike_limit_percentage: 20
+  batch:
+    timeout: 200ms
+    send_batch_size: 8192
+
+exporters:
+  otlp/metrics:
+    endpoint: "api.honeycomb.io:443" # US instance
+    #endpoint: "api.eu1.honeycomb.io:443" # EU instance
+    headers:
+      "x-honeycomb-team": ${env:x_honeycomb_team} # Honeycomb API KEY
+      "x-honeycomb-dataset": "pender"
+
+service:
+  # telemetry:
+  #   logs:
+  #     level: "debug"
+  pipelines:
+    metrics:
+      receivers: [prometheus]
+      processors: [memory_limiter, batch]
+      exporters: [otlp/metrics]