docker compose file (ELK)

version: '2.1'
services:
    web:
      image: httpd
      ports:
        - "8080:80"
      links:
        - fluentd
      logging:
        driver: "fluentd"
        options:
          fluentd-address: localhost:24224
          tag: httpd.access
    fluentd:
      build:
        context: ./
        dockerfile: Dockerfile-fluentd
      volumes:
        - ./fluentd/conf:/fluentd/etc
      depends_on:
        - kafka
      links:
        - kafka
      ports:
        - "24224:24224"
        - "24224:24224/udp"
    zookeeper:
      image: wurstmeister/zookeeper
      ports:
        - "2181:2181"
    kafka:
      image: wurstmeister/kafka
      hostname: kafka
      depends_on:
        - zookeeper
      ports:
        - "9092:9092"
      environment:
        KAFKA_BROKER_ID: 1
        KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
        KAFKA_CREATE_TOPICS: log-messages:1:1,connect-config:1:1:compact,connect-offset:1:1:compact,connect-status:1:1:compact
        KAFKA_LISTENERS: PLAINTEXT://kafka:9092
    kafka_connect:
      build:
        context: ./
        dockerfile: Dockerfile-kafka-connect
      depends_on:
        - kafka
        - elasticsearch
      links:
        - kafka
        - elasticsearch
      environment:
        CONNECT_BOOTSTRAP_SERVERS: kafka:9092
        CONNECT_GROUP_ID: 1
        CONNECT_CONFIG_STORAGE_TOPIC: connect-config
        CONNECT_OFFSET_STORAGE_TOPIC: connect-offset
        CONNECT_STATUS_STORAGE_TOPIC: connect-status
        CONNECT_CONFIG_STORAGE_REPLICATION_FACTOR: 1
        CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR: 1
        CONNECT_STATUS_STORAGE_REPLICATION_FACTOR: 1
        CONNECT_KEY_CONVERTER: org.apache.kafka.connect.json.JsonConverter
        CONNECT_VALUE_CONVERTER: org.apache.kafka.connect.json.JsonConverter
        CONNECT_KEY_CONVERTER_SCHEMAS_ENABLE: "false"
        CONNECT_VALUE_CONVERTER_SCHEMAS_ENABLE: "false"
        CONNECT_INTERNAL_KEY_CONVERTER: org.apache.kafka.connect.json.JsonConverter
        CONNECT_INTERNAL_VALUE_CONVERTER: org.apache.kafka.connect.json.JsonConverter
        CONNECT_REST_ADVERTISED_HOST_NAME: localhost
        CONNECT_PLUGIN_PATH: "/usr/share/java,/opt/connectors"
    elasticsearch:
      image: elasticsearch:6.5.2
      expose:
        - 9200
      ports:
        - "9200:9200"
    kibana:
      image: kibana:6.5.2
      links:
        - "elasticsearch"
      ports:
        - "5601:5601"