compose.yaml

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# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
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#     http://www.apache.org/licenses/LICENSE-2.0
#
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services:
  solr:
    image: solr:9-slim
    ports:
      - "8983:8983"
    networks: [ search ]
    environment:
      ZK_HOST: "zoo:2181"
      SOLR_HEAP: "1g"
    depends_on: [ zoo ]
    volumes:
      - data:/var/solr
      - ./mydata:/mydata
      - ./init-solr.sh:/init-solr.sh
    command: [ "bash", "/init-solr.sh" ]

  zoo:
    image: zookeeper:3.9
    networks: [ search ]
    environment:
      ZOO_4LW_COMMANDS_WHITELIST: "mntr,conf,ruok"

    # =============================================================================
    # LGTM Stack - Grafana observability backend (Loki, Grafana, Tempo, Mimir)
    # =============================================================================
    # This all-in-one container provides:
    # - Loki: Log aggregation (LogQL queries)
    # - Grafana: Visualization at http://localhost:3000 (no auth required)
    # - Tempo: Distributed tracing (TraceQL queries)
    # - Mimir: Prometheus-compatible metrics storage
    # - OpenTelemetry Collector: Receives OTLP data on ports 4317 (gRPC) and 4318 (HTTP)
    #
    # Spring Boot auto-configures OTLP endpoints when this container is running.
  lgtm:
      image: grafana/otel-lgtm:latest
      ports:
          - "3000:3000"   # Grafana UI
          - "4317:4317"   # OTLP gRPC receiver
          - "4318:4318"   # OTLP HTTP receiver
      networks: [ search ]
      labels:
          # Prevent Spring Boot auto-configuration from trying to manage this service
          org.springframework.boot.ignore: "true"

volumes:
  data:

networks:
  search:
    driver: bridge