# [ hostname ]
services:

# --- elasticsearch
  elasticsearch:
    image: elastic/elasticsearch:9.1.5
    container_name: elasticsearch
    ports:
      - [ ip_address ]:9200:9200
    environment:
      - [ hostname ]=single-node
      - [ hostname ]=elasticsearch
      - ELASTIC_PASSWORD=password
      - [ hostname ]=true
      - [ hostname ]=false
      - [ hostname ].self_generated.type=trial
      - [ hostname ].use_auto_machine_memory_percent=true
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    volumes:
      - elasticsearch:/usr/share/elasticsearch/data
    healthcheck:
      test: ["CMD-SHELL", "curl --output /dev/null --silent --head --fail -u elastic:password http://elasticsearch:9200"]
      interval: 10s
      timeout: 10s
      retries: 30
    ulimits:
      memlock:
        soft: -1
        hard: -1
    networks:
      logging-net:

  kibana:
    image: elastic/kibana:9.1.5
    container_name: kibana
    depends_on:
      elasticsearch:
        condition: service_healthy
    ports:
      - [ ip_address ]:5601:5601
    environment:
      - ELASTICSEARCH_HOSTS=http://elasticsearch:9200
      - ELASTICSEARCH_USERNAME=kibana_system
      - ELASTICSEARCH_PASSWORD=[ kibana_system_password ]
      - SERVER_PUBLICBASEURL=http://[ ip_address ]:5601
      - SERVER_ENCRYPTIONKEY=[ encryption_key ]
      - XPACK_ENCRYPTEDSAVEDOBJECTS_ENCRYPTIONKEY=[ encryption_key ]
      - XPACK_REPORTING_ENCRYPTIONKEY=[ encryption_key ]
      - XPACK_SECURITY_ENCRYPTIONKEY=[ encryption_key ]
    healthcheck:
      test: ["CMD-SHELL", "curl --output /dev/null --silent --head --fail http://localhost:5601/login"]
      interval: 10s
      timeout: 10s
      retries: 60
    networks:
      logging-net:

  kibana_settings:
    depends_on:
      elasticsearch:
        condition: service_healthy
    image: elastic/elasticsearch:9.1.5
    container_name: kibana-local
    restart: "no"
    command: >
      bash -c '
        echo "Setting up kibana_system password";
        start_time=$$(date +%s);
        timeout=60;
        until curl -s -u elastic:password -X POST http://elasticsearch:9200/_security/user/kibana_system/_password
          -H "Content-Type: application/json"
          -d "{\"password\": \"password\"}" | grep -q "{}"; do
          elapsed_time=$$(($$(date +%s) - start_time));
          if [ "$$elapsed_time" -ge "$$timeout" ]; then
            echo "Error: Kibana system password setup timeout.";
            exit 1;
          fi;
          sleep 2;
        done;
        echo "Kibana system password setup completed.";
      '
    networks:
      logging-net:

# --- logstash
  logstash:
    image: elastic/logstash:9.1.5
    container_name: logstash
    volumes:
      - ./[ hostname ]:/usr/share/logstash/pipeline/[ hostname ]:ro
    ports:
      - "5044:5044"    # Beats (Filebeat)
      - "5514:5514/udp" # Syslog (OPNsense)
      - "5514:5514/tcp" # optional TCP syslog
    environment:
      - ELASTICSEARCH_HOST=elasticsearch:9200
    networks:
      - logging-net

# --- filebeat
  filebeat:
    image: elastic/filebeat:9.1.5
    container_name: filebeat
    user: root  # needed to access /var/lib/containers or /var/lib/docker
    restart: unless-stopped

    # Mount host and container runtime logs
    volumes:
      # Filebeat config
      - ./[ hostname ]:/usr/share/filebeat/[ hostname ]:ro
      # Container logs (Docker or Podman)
      - /var/lib/docker/containers:/var/lib/docker/containers:ro
      - /var/log:/var/log:ro
      - /var/run/[ hostname ]:/var/run/[ hostname ]:ro

    # Optional: Send output to stdout instead of Elasticsearch
    command: [
      "filebeat",
      "-e",  # log to stderr
      "--[ hostname ]=false",
      "-c",
      "/usr/share/filebeat/[ hostname ]"
    ]
    networks:
      - logging-net

networks:
  logging-net:

volumes:
  elasticsearch:
    driver: local

      - SERVER_ENCRYPTIONKEY=[ encryption_key ]
      - XPACK_ENCRYPTEDSAVEDOBJECTS_ENCRYPTIONKEY=[ encryption_key ]
      - XPACK_REPORTING_ENCRYPTIONKEY=[ encryption_key ]
      - XPACK_SECURITY_ENCRYPTIONKEY=[ encryption_key ]

openssl rand -hex 16

docker exec -it elasticsearch bin/elasticsearch-reset-password -u kibana_system