kafka connect 的 docker compose 文件中的 env 变量应该是什么以导出 jmx 指标

What should be the env variables in the docker compose file of kafka connect to export jmx metrics

PFB 我用过的compose文件配置

version: '2'
services:
  kafka-connect:
    image: confluentinc/cp-kafka-connect:5.5.0
    hostname: kafka-connect
    ports:
      - "8083:8083"
      - "8000:8000"
    environment:
      CONNECT_BOOTSTRAP_SERVERS: "kafk_server_host_name:9092"
      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_INTERNAL_KEY_CONVERTER: "org.apache.kafka.connect.json.JsonConverter"
      CONNECT_INTERNAL_VALUE_CONVERTER: "org.apache.kafka.connect.json.JsonConverter"
      CONNECT_KEY_CONVERTER: "org.apache.kafka.connect.json.JsonConverter"
      CONNECT_VALUE_CONVERTER: "org.apache.kafka.connect.json.JsonConverter"
      CONNECT_REST_ADVERTISED_HOST_NAME: "kafka-connect"
      CONNECT_LOG4J_ROOT_LOGLEVEL: "INFO"
      CONNECT_CONFIG_STORAGE_REPLICATION_FACTOR: "1"
      CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR: "1"
      CONNECT_STATUS_STORAGE_REPLICATION_FACTOR: "1"
      KAFKA_JMX_OPTS: "-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false - 
      Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=127.0.0.1 - 
      Dcom.sun.management.jmxremote.rmi.port=8000"
      CONNECT_PLUGIN_PATH: '/usr/share/java,/etc/kafka-connect/jars'
    volumes:
      - ./libs:/etc/kafka-connect/jars/

在 docker 中启动 kafka connect 后,当我尝试使用 jconsole 连接到 localhost 8000 时,出现以下错误:

java.rmi.ConnectIOException: error during JRMP connection establishment; nested exception is: 
    java.io.EOFException

请帮助解决错误。我不确定我使用的环境变量是否正确。

我还有一个问题:在 kafka 中公开 jmx 端口是否也为 kafka connect 提供指标,还是应该分别从 kafka 和 kafka connect 获取指标?

如 Robin Moffatt 提供的资源所述

https://rmoff.net/2018/09/17/accessing-kafka-docker-containers-jmx-from-host/

我提到了两个变量 KAFKA_JMX_HOSTNAME 和 KAFKA_JMX_PORT 并特别使用了 9010 端口,因为其他端口给我问题中给出的 jrmf 错误