Kafka Connect 无法通过 SSL 读取 Kafka 主题

Question

在我们的 docker-swarm 中运行 kafka connect，并使用以下 compose 文件：

cp-kafka-connect-node:
    image: confluentinc/cp-kafka-connect:5.1.0
    ports:
      - 28085:28085
    secrets:
      - kafka.truststore.jks
      - source: kafka-connect-aws-credentials
        target: /root/.aws/credentials
    environment:
      CONNECT_BOOTSTRAP_SERVERS: kafka01:9093,kafka02:9093,kafka03:9093
      CONNECT_LOG4J_ROOT_LEVEL: TRACE
      CONNECT_REST_PORT: 28085
      CONNECT_GROUP_ID: cp-kafka-connect
      CONNECT_CONFIG_STORAGE_TOPIC: dev_cp-kafka-connect-config
      CONNECT_OFFSET_STORAGE_TOPIC: dev_cp-kafka-connect-offsets
      CONNECT_STATUS_STORAGE_TOPIC: dev_cp-kafka-connect-status
      CONNECT_CONFIG_STORAGE_REPLICATION_FACTOR: 3
      CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR: 3
      CONNECT_STATUS_STORAGE_REPLICATION_FACTOR: 3
      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/
      CONNECT_SECURITY_PROTOCOL: SSL
      CONNECT_SSL_TRUSTSTORE_LOCATION: /run/secrets/kafka.truststore.jks
      CONNECT_SSL_TRUSTSTORE_PASSWORD: ********
      KAFKA_HEAP_OPTS: '-XX:+UnlockExperimentalVMOptions -XX:+UseCGroupMemoryLimitForHeap -XX:MaxRAMFraction=2'
    deploy:
      replicas: 1
      resources:
        limits:
          cpus: '0.50'
          memory: 4gb
      restart_policy:
        condition: on-failure
        delay: 10s
        max_attempts: 3
        window: 2000s

secrets:
  kafka.truststore.jks:
    external: true
  kafka-connect-aws-credentials:
    external: true

kafka 连接节点成功启动，我可以设置任务并查看这些任务的状态...

我设置的连接器称为 kafka-sink，我使用以下配置创建它：

"config": {
    "connector.class": "io.confluent.connect.s3.S3SinkConnector",
    "s3.region": "eu-central-1",
    "flush.size": "1",
    "schema.compatibility": "NONE",
    "tasks.max": "1",
    "topics": "input-topic-name",
    "s3.part.size": "5242880",
    "timezone": "UTC",
    "directory.delim": "/",
    "locale": "UK",
    "s3.compression.type": "gzip",
    "format.class": "io.confluent.connect.s3.format.bytearray.ByteArrayFormat",
    "partitioner.class": "io.confluent.connect.storage.partitioner.DefaultPartitioner",
    "schema.generator.class": "io.confluent.connect.storage.hive.schema.DefaultSchemaGenerator",
    "name": "kafka-sink",
    "value.converter": "org.apache.kafka.connect.converters.ByteArrayConverter",
    "storage.class": "io.confluent.connect.s3.storage.S3Storage",
    "s3.bucket.name": "my-s3-bucket",
    "rotate.schedule.interval.ms": "60000"
  }

该任务现在表示它正在运行。

当我没有包含 SSL 配置时，具体来说：

  CONNECT_BOOTSTRAP_SERVERS: kafka01:9093,kafka02:9093,kafka03:9093
  CONNECT_SECURITY_PROTOCOL: SSL
  CONNECT_SSL_TRUSTSTORE_LOCATION: /run/secrets/kafka.truststore.jks
  CONNECT_SSL_TRUSTSTORE_PASSWORD: ********

而是指向一个没有安全性的暴露的引导服务器：

  CONNECT_BOOTSTRAP_SERVERS: insecurekafka:9092

它工作正常，从适当的输入主题读取，并使用默认分区输出到 S3 存储桶...

但是，当我使用 SSL 配置针对我的安全 kafka 主题运行它时，它不会记录任何错误，不会引发异常，但尽管数据不断被推送到输入主题，但它什么也不做...

难道我做错了什么？

这是我第一次使用 Kafka Connect，通常，我使用 Spring Boot 应用程序连接到 kafka，您只需在配置中指定信任库位置和密码即可。

我的撰写文件或任务配置中是否缺少某些配置？

Answer 1

我认为您需要为消费者和生产者添加 SSL 配置。检查这里Kafka Connect Encrypt with SSL 类似这样

security.protocol=SSL
ssl.truststore.location=~/kafka.truststore.jks
ssl.truststore.password=<password>
ssl.keystore.location=~/kafka.client.keystore.jks
ssl.keystore.password=<password>
ssl.key.password=<password>

producer.security.protocol=SSL
producer.ssl.truststore.location=~/kafka.truststore.jks
producer.ssl.truststore.password=<password>
producer.ssl.keystore.location=~/kafka.client.keystore.jks
producer.ssl.keystore.password=<password>
producer.ssl.key.password=<password>