无法将 MongoDB 作为源连接到 Kafka

Question

I am trying to connect MongoDB as a source to Kafka connect server but when I run CURL POST command to register Mongo source connector. I successfully verified the presence of the connector in the kafka-connect connector-plugins so I can't see why I am getting these errors

ERROR Plugin class loader for connector: 'com.mongodb.kafka.connect.MongoSourceConnector' was not found. Returning: org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader@7915bca3 (org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader)

and

com.mongodb.MongoTimeoutException: Timed out after 30000 ms while waiting to connect. Client view of cluster state is {type=UNKNOWN, servers=[{address=172.20.0.3:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketOpenException: Exception opening socket}, caused by {java.net.SocketTimeoutException: connect timed out}}, {address=172.0.0.2:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketOpenException: Exception opening socket}, caused by {java.net.SocketTimeoutException: connect timed out}}]

this is my docker-compose configuration

version: '3.5'
services:
  zookeeper:
    image: confluentinc/cp-zookeeper:5.0.0
    hostname: zookeeper
    container_name: zookeeper
    ports:
      - 2181:2181
    networks:
      - es-network  
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000


  kafka:
    image: confluentinc/cp-kafka:5.0.0
    hostname: kafka
    container_name: kafka
    depends_on:
      - zookeeper
    ports:
      - 29092:29092
      - 9092:9092
    networks:
      - es-network
    environment:
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092,PLAINTEXT_HOST://localhost:29092
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      KAFKA_BROKER_ID: 1
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1

  schema-registry:
    image: confluentinc/cp-schema-registry:5.0.0
    hostname: schema-registry
    container_name: schema-registry
    networks:
      - es-network
    ports:
      - 8081:8081
    environment:
      SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL: zookeeper:2181
      SCHEMA_REGISTRY_HOST_NAME: schema-registry
    depends_on:
      - zookeeper
      - kafka

  kafka-connect:
    image: confluentinc/cp-kafka-connect
    hostname: kafka-connect
    container_name: kafka-connect
    networks:
      - es-network
    ports:
      - 8083:8083
    environment:
      CONNECT_BOOTSTRAP_SERVERS: kafka:9092
      CONNECT_REST_ADVERTISED_HOST_NAME: connect
      CONNECT_REST_PORT: 8083
      CONNECT_GROUP_ID: compose-connect-group
      CONNECT_CONFIG_STORAGE_TOPIC: docker-connect-configs
      CONNECT_OFFSET_STORAGE_TOPIC: docker-connect-offsets
      CONNECT_STATUS_STORAGE_TOPIC: docker-connect-status
      CONNECT_KEY_CONVERTER: org.apache.kafka.connect.json.JsonConverter
      CONNECT_VALUE_CONVERTER: org.apache.kafka.connect.json.JsonConverter
      CONNECT_INTERNAL_KEY_CONVERTER: org.apache.kafka.connect.json.JsonConverter
      CONNECT_INTERNAL_VALUE_CONVERTER: org.apache.kafka.connect.json.JsonConverter
      CONNECT_CONFIG_STORAGE_REPLICATION_FACTOR:  1
      CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR:  1
      CONNECT_STATUS_STORAGE_REPLICATION_FACTOR:  1
      CONNECT_PLUGIN_PATH: '/usr/share/java,/etc/kafka-connect/jars'
      CONNECT_CONFLUENT_TOPIC_REPLICATION_FACTOR: 1
    volumes:
      - /home/xroot/Desktop/docker_env/confluent_env/confluent_on_docker/jars:/etc/kafka-connect/jars
    depends_on:
      - zookeeper
      - kafka
      - schema-registry

  # MongoDB Replica Set
  mongo1:
    hostname: mongo1
    image: mongo
    container_name: mongo1
    networks:
      - es-network
    ports:
      - 27018:27017
    restart: always
    entrypoint: [ "/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0" ]

  mongo2:
    hostname: mongo2
    image: mongo
    container_name: mongo2
    networks:
      - es-network
    ports:
      - 27017:27017
    restart: always
    entrypoint: [ "/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0" ]

networks:
  es-network:
    attachable: true

Answer 1

问题出在 jars 目录中的 MongoDB 驱动程序版本中，我尝试了“mongo-kafka-connect-1.0.1-all”版本并且运行良好。