rippled/docker/telemetry/docker-compose.yml

# Docker Compose stack for xrpld OpenTelemetry observability.
#
# Provides services for local development:
#   - otel-collector: receives OTLP traces from xrpld, batches and
#     forwards them to Tempo. Also tails xrpld log files
#     via file_log receiver and exports to Loki. Listens on ports
#     4317 (gRPC) and 4318 (HTTP).
#   - tempo: Grafana Tempo tracing backend, queryable via Grafana Explore
#     on port 3000. Recommended for production (S3/GCS storage, TraceQL).
#   - loki: Grafana Loki log aggregation backend for centralized log
#     ingestion and log-trace correlation.
#   - grafana: dashboards on port 3000, pre-configured with Tempo,
#     Prometheus, and Loki datasources.
#
# Usage:
#   docker compose -f docker/telemetry/docker-compose.yml up -d
#
# Configure xrpld to export traces by adding to xrpld.cfg:
#   [telemetry]
#   enabled=1
#   traces_endpoint=http://localhost:4318/v1/traces

services:
  # One-shot init for the collector's offset store. Docker creates a fresh
  # named volume owned by root, but the collector image runs as 10001:10001
  # and ships no writable directory, so the file_storage extension could not
  # create its database and the collector would fail to start. Chown the
  # volume once, then exit; the collector waits for this to complete.
  #
  # Reuses the Prometheus image purely because the stack already pulls it and
  # it has a shell — this adds no new image dependency. The entrypoint is
  # overridden since that image normally starts the Prometheus server.
  otelcol-storage-init:
    image: prom/prometheus:v3.13.2
    user: "0:0"
    entrypoint: ["sh", "-c"]
    command: ["mkdir -p /data/file_storage && chown -R 10001:10001 /data"]
    volumes:
      - otelcol-storage:/data
    networks:
      - xrpld-telemetry

  # One-shot init for the xrpld log root. Docker creates a missing bind-mount
  # source as root, and xrpld then cannot create the <network> subdirectory
  # inside it. Config::getDebugLogFile() only warns on that failure and carries
  # on, so the node looks healthy while writing no debug.log at all and the
  # whole log pipeline stays empty with no error at any layer. Create the
  # directory here and hand it to the host user instead.
  #
  # XRPLD_UID/XRPLD_GID default to 1000, the first non-root user on a typical
  # Linux host. Set them if `id -u` differs, or xrpld still cannot write.
  # Reuses the Prometheus image for the same reason otelcol-storage-init does.
  xrpld-logdir-init:
    image: prom/prometheus:v3.13.2
    user: "0:0"
    entrypoint: ["sh", "-c"]
    command:
      [
        "mkdir -p /data/logs && chown ${XRPLD_UID:-1000}:${XRPLD_GID:-1000} /data /data/logs",
      ]
    volumes:
      - ./data:/data
    networks:
      - xrpld-telemetry

  # OpenTelemetry Collector: receives spans from xrpld via OTLP protocol,
  # batches them for efficiency, and forwards to Tempo for storage.
  otel-collector:
    image: otel/opentelemetry-collector-contrib:0.158.0
    # Second --config layers file_log offset persistence on top of the shared
    # base config; the collector deep-merges them. Only this stack keeps its
    # logs across restarts, so only this stack needs it.
    command:
      [
        "--config=/etc/otel-collector-config.yaml",
        "--config=/etc/otel-collector-filestorage.yaml",
      ]
    ports:
      - "4317:4317" # OTLP gRPC
      - "4318:4318" # OTLP HTTP (traces + native OTel metrics)
      - "8889:8889" # Prometheus metrics (spanmetrics + OTLP)
      # StatsD UDP port removed — beast::insight now uses native OTLP.
      # Uncomment if using server=statsd fallback:
      # - "8125:8125/udp"
    volumes:
      # Mount collector pipeline config (receivers → processors → exporters)
      - ./otel-collector-config.yaml:/etc/otel-collector-config.yaml:ro
      # Dev-only overlay: persist file_log read offsets across restarts
      - ./otel-collector-filestorage.yaml:/etc/otel-collector-filestorage.yaml:ro
      # Mount the xrpld log root for the file_log receiver. The telemetry
      # configs write to docker/telemetry/data/logs/<network>/debug.log, so
      # the default source is the repo-relative ./data/logs, which
      # xrpld-logdir-init has already created and handed to the host user.
      # Override XRPLD_LOG_DIR to point at another root (e.g. the integration
      # test sets it to its own workdir; that root is created by the test, so
      # the init service is a no-op there). Mounted read-only so the collector
      # only tails.
      - ${XRPLD_LOG_DIR:-./data/logs}:/var/log/xrpld:ro
      # Persisted file_log read offsets, so a collector restart resumes
      # instead of re-reading every debug.log from the top.
      - otelcol-storage:/var/lib/otelcol
    depends_on:
      tempo:
        condition: service_started
      loki:
        condition: service_started
      otelcol-storage-init:
        condition: service_completed_successfully
      xrpld-logdir-init:
        condition: service_completed_successfully
    networks:
      - xrpld-telemetry

  # Grafana Tempo: distributed tracing backend that stores and indexes
  # spans. Queryable via TraceQL in Grafana Explore.
  tempo:
    image: grafana/tempo:2.9.4
    command: ["-config.file=/etc/tempo.yaml"]
    ports:
      - "3200:3200" # Tempo HTTP API (health check, query)
    volumes:
      # Mount Tempo storage and ingestion config
      - ./tempo.yaml:/etc/tempo.yaml:ro
      # Persistent volume for trace data (WAL + blocks)
      - tempo-data:/var/tempo
    networks:
      - xrpld-telemetry

  # Grafana Loki for centralized log ingestion and log-trace
  # correlation. Loki 3.x supports native OTLP ingestion, so the OTel
  # Collector exports via otlp_http to Loki's /otlp endpoint.
  # Query logs via Grafana Explore -> Loki at http://localhost:3000.
  loki:
    image: grafana/loki:3.4.2
    ports:
      - "3100:3100"
    command: -config.file=/etc/loki/local-config.yaml
    volumes:
      - loki-data:/loki
    networks:
      - xrpld-telemetry

  prometheus:
    # Pinned to an exact patch release for reproducible, config-stable runs.
    image: prom/prometheus:v3.13.2
    ports:
      - "9090:9090"
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml:ro
      - prometheus-data:/prometheus
    depends_on:
      - otel-collector
    networks:
      - xrpld-telemetry

  # Grafana: visualization UI with Tempo pre-configured as a datasource.
  # Anonymous admin access enabled for local development convenience.
  grafana:
    image: grafana/grafana:13.1.2
    environment:
      - GF_AUTH_ANONYMOUS_ENABLED=true # No login required for local dev
      - GF_AUTH_ANONYMOUS_ORG_ROLE=Admin # Full access without auth
    ports:
      - "3000:3000" # Grafana web UI
    volumes:
      # Auto-provision Tempo datasource and search filters on startup
      - ./grafana/provisioning:/etc/grafana/provisioning:ro
      - ./grafana/dashboards:/var/lib/grafana/dashboards:ro
    depends_on:
      - tempo
      - prometheus
      - loki
    networks:
      - xrpld-telemetry

# Named volume for Tempo trace storage (WAL and compacted blocks).
# Data persists across container restarts. Remove with:
#   docker compose -f docker/telemetry/docker-compose.yml down -v
volumes:
  tempo-data:
  prometheus-data:
  loki-data:
  otelcol-storage:

# Isolated bridge network so services communicate by container name
# (e.g., the collector reaches Tempo at http://tempo:4317).
networks:
  xrpld-telemetry:
    driver: bridge