version: "2"
services:
  # Collector
  otel-collector:
    image: otel/opentelemetry-collector:0.88.0
    restart: always
    command: ["--config=/etc/otel-collector-config.yaml", "${OTELCOL_ARGS}"]
    volumes:
      - ./otel-collector-config.yaml:/etc/otel-collector-config.yaml
    ports:
      - "8888:8888"   # Prometheus metrics exposed by the collector
      - "8889:8889"   # Prometheus exporter metrics
      - "13133:13133" # health_check extension
      - "4317:4317"   # OTLP gRPC receiver

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

  grafana:
    image: grafana/grafana
    container_name: grafana
    restart: unless-stopped
    ports:
      - '3000:3000'
    volumes:
      - ./grafana:/etc/grafana/provisioning/datasources
      - ./grafana-storage:/var/lib/grafana