docker-compose.yml

version: "3"
services:
  # Sample Go application producing counter metrics.
  prom-counter:
    container_name: prom-counter
    build:
      context: prom-counter
    restart: always
    depends_on:
      - otelcollector
  # The Prometheus server:
  prometheus:
    image: prom/prometheus
    container_name: prometheus
    ports:
      - 9090:9090
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
  # Splunk Enterprise server:
  splunk:
    image: splunk/splunk:latest
    container_name: splunk
    environment:
      - SPLUNK_START_ARGS=--accept-license
      - SPLUNK_HEC_TOKEN=00000000-0000-0000-0000-0000000000000
      - SPLUNK_PASSWORD=changeme
    ports:
      - 18000:8000
    healthcheck:
      test: ['CMD', 'curl', '-f', 'http://localhost:8000']
      interval: 5s
      timeout: 5s
      retries: 20
    volumes:
      - ./splunk.yml:/tmp/defaults/default.yml
      - /opt/splunk/var
      - /opt/splunk/etc
  # OpenTelemetry Collector
  otelcollector:
    image: quay.io/signalfx/splunk-otel-collector:latest
    container_name: otelcollector
    command: ["--config=/etc/otel-collector-config.yml", "--set=service.telemetry.logs.level=debug"]
    volumes:
      - ./otel-collector-config.yml:/etc/otel-collector-config.yml
    depends_on:
      splunk:
        condition: service_healthy
      prometheus:
        condition: service_started