# Standalone OpenSearch 2.19 with security disabled for local testing
services:
  opensearch:
    image: opensearchproject/opensearch:2.19.0
    platform: linux/arm64  # Native ARM64 support
    container_name: opensearch-standalone
    hostname: opensearch
    environment:
      # Cluster settings
      - cluster.name=opensearch-cluster
      - node.name=opensearch-node1
      - discovery.type=single-node
      - bootstrap.memory_lock=true
      
      # Disable security for local testing
      - DISABLE_SECURITY_PLUGIN=true
      - DISABLE_INSTALL_DEMO_CONFIG=true
      
      # JVM memory settings - adjust based on your system
      - OPENSEARCH_JAVA_OPTS=-Xms2g -Xmx4g
      
      # Performance settings
      - indices.memory.index_buffer_size=20%
      - cluster.routing.allocation.disk.threshold_enabled=false
      
      # Compatibility mode for Elasticsearch clients
      - compatibility.override_main_response_version=true
      
    ulimits:
      memlock:
        soft: -1
        hard: -1
      nofile:
        soft: 65536
        hard: 65536
    volumes:
      # Mount directory for persistent storage (configurable via .env)
      - ${DOCKER_VOLUMES_PATH:-./docker-volumes}/opensearch:/usr/share/opensearch/data
    ports:
      - "9200:9200"
      - "9600:9600"  # Performance analyzer
    networks:
      - opensearch-net
    healthcheck:
      test: ["CMD-SHELL", "curl -s http://localhost:9200/_cluster/health?pretty | grep status | grep -qE 'green|yellow' || exit 1"]
      interval: 30s
      timeout: 10s
      retries: 5
      start_period: 60s
    deploy:
      resources:
        limits:
          memory: 4G
        reservations:
          memory: 2G

  # Optional: OpenSearch Dashboards for visualization
  # Commented out to save space - uncomment if needed
  # opensearch-dashboards:
  #   image: opensearchproject/opensearch-dashboards:2.19.0
  #   platform: linux/arm64  # Native ARM64 support
  #   container_name: opensearch-dashboards
  #   ports:
  #     - "5601:5601"
  #   environment:
  #     - OPENSEARCH_HOSTS=["http://opensearch:9200"]
  #     - DISABLE_SECURITY_DASHBOARDS_PLUGIN=true
  #   networks:
  #     - opensearch-net
  #   depends_on:
  #     opensearch:
  #       condition: service_healthy

networks:
  opensearch-net:
    driver: bridge

# Usage:
# 1. Set vm.max_map_count: sudo sysctl -w vm.max_map_count=262144
# 2. Create the volume directory: mkdir -p search-volume
# 3. Start: docker-compose -f docker-compose-opensearch-standalone.yml up -d
# 4. Access OpenSearch: http://localhost:9200
# 5. Access OpenSearch Dashboards: http://localhost:5601
# 6. No authentication required (security disabled)