opentelemetry-collector example

docker-compose.yaml

version: "3.7"

services:
  otel-collector:
    container_name: otel-collector 
    image: otel/opentelemetry-collector-contrib:0.36.0
    command: ["--config=/etc/otel-collector-config.yaml"]
    volumes:
      - ./otel-collector-config.yaml:/etc/otel-collector-config.yaml
    network_mode: "host"
    ports:
      - "4317:4317"   # OpenTelemetry receiver
      - "1888:1888"   # pprof extension
      - "8888:8888"   # Prometheus metrics
      - "8889:8889"   # Prometheus exporter metrics
      - "13133:13133" # health_check extension
      - "55679:55679" # zpages extension

  zipkin:
    container_name: zipkin 
    image: openzipkin/zipkin:latest
    network_mode: "host"
    ports:
      - "9411:9411"

  prometheus:
    container_name: prometheus
    image: prom/prometheus:latest
    volumes:
      - ./prometheus.yaml:/etc/prometheus/prometheus.yml
    network_mode: "host"
    ports:
      - "9090:9090"

otel-collector-config.yaml

receivers:
  otlp:
    protocols:
      grpc:
        endpoint: 0.0.0.0:4317

processors:

exporters:
  zipkin:
    endpoint: "http://localhost:9411/api/v2/spans"
    format: proto
    default_service_name: "observability service"

  prometheus:
    endpoint: "0.0.0.0:8889"

extensions:
  health_check:
    endpoint:  0.0.0.0:13133
  pprof:
    endpoint: :1888
  zpages:
    endpoint: :55679

service:
  extensions: [pprof, zpages, health_check]
  pipelines:
    traces:
      receivers: [otlp]
      processors: []
      exporters: [zipkin]
    metrics:
      receivers: [otlp]
      processors: []
      exporters: [prometheus]

prometheus.yaml

scrape_configs:
  - job_name: 'otel'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:8889']

Run: docker-compose up -d

Traces: http://localhost:9411/zipkin
Metrics: http://localhost:9090/

Remember to set your opentelemetry-collector exporter (insutrumentation-host) to localhost:4317