如何通过 docker-compose 实现 debezium 连接器（Oracle）？

Question

我目前正在尝试实现 debezium 连接器。我使用 JDBC 连接器作为介绍，但我需要基于日志的 CDC。我正在使用 docker-compose.yml 文件来建立所有配置，并且数据库基于 Oracle。

我被卡住了，因为我收到此错误“错误 io.confluent.admin.utils.ClusterStatus - 预期有 1 个代理，但只找到 0 个。找到的代理 []。”

这是我的 docker-compose 文件：

有没有更简单的方法来构建这个 docker-compose？

version: '2'
services:
  zookeeper:
    image: debezium/zookeeper:1.4
    hostname: zookeeper
    container_name: zookeeper
    volumes:
      - /dados/persistence/zookeeper/data:/var/lib/zookeeper/data
      - /dados/persistence/zookeeper/log:/var/lib/zookeeper/log
    ports:
      - "2181:2181"
      - "2888:2888"
      - "3888:3888"

  broker:
    image: debezium/kafka:1.4
    hostname: broker
    container_name: broker
    volumes:
      - /dados/persistence/broker/data:/var/lib/kafka/data
    depends_on:
      - zookeeper
    ports:
      - "9092:9092"
      - "9101:9101"
    environment:
      BROKER_ID: 1
      ZOOKEEPER_CONNECT: 'zookeeper:2181'
      listener.security.protocol.map: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
      advertised.listeners: PLAINTEXT://broker:29092,PLAINTEXT_HOST://localhost:9092
      metric.reports: io.confluent.metrics.reporter.ConfluentMetricsReporter
      offset.topic.replication.factor: 1
      group.initial.rebalance.delay.ms: 0
      confluent.license.topic.replication.factor: 1
      confluent.balancer.topic.replication.factor: 1
      transaction.state.log.min.isr: 1
      transaction.state.log.replication.factor: 1
      jmx.port: 9101
      jmx.hostname: localhost
      confluent.schema.registry.url: http://schema-registry:8081
      CONFLUENT_METRICS_REPORTER_BOOTSTRAP_SERVERS: broker:29092
      CONFLUENT_METRICS_REPORTER_TOPIC_REPLICAS: 1
      CONFLUENT_METRICS_ENABLE: 'true'
      CONFLUENT_SUPPORT_CUSTOMER_ID: 'anonymous'

  schema-registry:
    image: confluentinc/cp-schema-registry:6.0.1
    hostname: schema-registry
    container_name: schema-registry
    depends_on:
      - broker
    ports:
      - "8081:8081"
    environment:
      SCHEMA_REGISTRY_HOST_NAME: schema-registry
      SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS: 'broker:29092'
      SCHEMA_REGISTRY_LISTENERS: http://0.0.0.0:8081

  connect:
    image: debezium/connect:1.4
    hostname: connect
    container_name: connect
    volumes:
      - /dados/packages/confluent-hub/dados/packages/confluent-hub/share/confluent-hub-components:/usr/share/confluent-hub-components/custom
      - /dados/persistence/kafka-connect/jars:/etc/kafka-connect/jars
    depends_on:
      - broker
      - schema-registry
    ports:
      - "8083:8083"
    environment:
      bootstrap.servers: 'broker:29092'
      advertised.host.name: connect
      rest.port: 8083
      group.id: compose-connect-group
      CONFIG_STORAGE_TOPIC: docker-connect-configs
      config.storage.replication.factor: 1
      offset.fulsh.interval.ms: 10000
      OFFSET_STORAGE_TOPIC: docker-connect-offsets
      offset.storage.replication.factor: 1
      status.storage.topic: docker-connect-status
      status.storage.replication.factor: 1
      key.converter: org.apache.kafka.connect.storage.StringConverter
      value.converter: io.confluent.connect.avro.AvroConverter
      value.converter.schema.registry.url: http://schema-registry:8081
      internal.key.converter: "org.apache.kafka.connect.json.JsonConverter"
      internal.value.converter: "org.apache.kafka.connect.json.JsonConverter"
      # CLASSPATH required due to CC-2422
      CLASSPATH: /usr/share/java/monitoring-interceptors/monitoring-interceptors-6.0.1.jar
      producer.interceptor.classes: "io.confluent.monitoring.clients.interceptor.MonitoringProducerInterceptor"
      consumer.interceptor.classes: "io.confluent.monitoring.clients.interceptor.MonitoringConsumerInterceptor"
      plugin_path: "/usr/share/java,/usr/share/confluent-hub-components,/usr/share/confluent-hub-components/custom"
      log4j.loggers: org.apache.zookeeper=ERROR,org.I0Itec.zkclient=ERROR,org.reflections=ERROR

  control-center:
    image: confluentinc/cp-enterprise-control-center:6.0.1
    hostname: control-center
    container_name: control-center
    depends_on:
      - broker
      - schema-registry
      - connect
      - ksqldb-server
    ports:
      - "9021:9021"
    environment:
      CONTROL_CENTER_BOOTSTRAP_SERVERS: 'broker:29092'
      CONTROL_CENTER_CONNECT_CLUSTER: 'connect:8083'
      CONTROL_CENTER_KSQL_KSQLDB1_URL: "http://10.58.0.207:8088"
      CONTROL_CENTER_KSQL_KSQLDB1_ADVERTISED_URL: "http://10.58.0.207:8088"
      CONTROL_CENTER_SCHEMA_REGISTRY_URL: "http://10.58.0.207:8081"
      CONTROL_CENTER_REPLICATION_FACTOR: 1
      CONTROL_CENTER_INTERNAL_TOPICS_PARTITIONS: 1
      CONTROL_CENTER_MONITORING_INTERCEPTOR_TOPIC_PARTITIONS: 1
      CONFLUENT_METRICS_TOPIC_REPLICATION: 1
      PORT: 9021

  ksqldb-server:
    image: confluentinc/cp-ksqldb-server:6.0.1
    hostname: ksqldb-server
    container_name: ksqldb-server
    depends_on:
      - broker
      - connect
    ports:
      - "8088:8088"
    environment:
      KSQL_CONFIG_DIR: "/etc/ksql"
      KSQL_BOOTSTRAP_SERVERS: "broker:29092"
      KSQL_HOST_NAME: ksqldb-server
      KSQL_LISTENERS: "http://0.0.0.0:8088"
      KSQL_CACHE_MAX_BYTES_BUFFERING: 0
      KSQL_KSQL_SCHEMA_REGISTRY_URL: "http://schema-registry:8081"
      KSQL_PRODUCER_INTERCEPTOR_CLASSES: "io.confluent.monitoring.clients.interceptor.MonitoringProducerInterceptor"
      KSQL_CONSUMER_INTERCEPTOR_CLASSES: "io.confluent.monitoring.clients.interceptor.MonitoringConsumerInterceptor"
      KSQL_KSQL_CONNECT_URL: "http://connect:8083"
      KSQL_KSQL_LOGGING_PROCESSING_TOPIC_REPLICATION_FACTOR: 1
      KSQL_KSQL_LOGGING_PROCESSING_TOPIC_AUTO_CREATE: 'true'
      KSQL_KSQL_LOGGING_PROCESSING_STREAM_AUTO_CREATE: 'true'

  ksqldb-cli:
    image: confluentinc/cp-ksqldb-cli:6.0.1
    container_name: ksqldb-cli
    depends_on:
      - broker
      - connect
      - ksqldb-server
    entrypoint: /bin/sh
    tty: true

  ksql-datagen:
    image: confluentinc/ksqldb-examples:6.0.1
    hostname: ksql-datagen
    container_name: ksql-datagen
    depends_on:
      - ksqldb-server
      - broker
      - schema-registry
      - connect
    command: "bash -c 'echo Waiting for Kafka to be ready... && \
                       cub kafka-ready -b broker:29092 1 40 && \
                       echo Waiting for Confluent Schema Registry to be ready... && \
                       cub sr-ready schema-registry 8081 40 && \
                       echo Waiting a few seconds for topic creation to finish... && \
                       sleep 11 && \
                       tail -f /dev/null'"
    environment:
      KSQL_CONFIG_DIR: "/etc/ksql"
      STREAMS_BOOTSTRAP_SERVERS: broker:29092
      STREAMS_SCHEMA_REGISTRY_HOST: schema-registry
      STREAMS_SCHEMA_REGISTRY_PORT: 8081

  rest-proxy:
    image: confluentinc/cp-kafka-rest:6.0.1
    depends_on:
      - broker
      - schema-registry
    ports:
      - 8082:8082
    hostname: rest-proxy
    container_name: rest-proxy
    environment:
      KAFKA_REST_HOST_NAME: rest-proxy
      KAFKA_REST_BOOTSTRAP_SERVERS: 'broker:29092'
      KAFKA_REST_LISTENERS: "http://0.0.0.0:8082"
      KAFKA_REST_SCHEMA_REGISTRY_URL: 'http://schema-registry:8081'

Answer 1

Here's a working Docker Compose 使用 Debezium Oracle 连接器。

---
version: '2'
services:
  zookeeper:
    image: confluentinc/cp-zookeeper:5.5.0
    container_name: zookeeper
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000

  kafka:
    image: confluentinc/cp-kafka:5.5.0
    container_name: kafka
    depends_on:
      - zookeeper
    ports:
    # "`-._,-'"`-._,-'"`-._,-'"`-._,-'"`-._,-'"`-._,-'"`-._,-'"`-._,-'"`-._,-
    # An important note about accessing Kafka from clients on other machines:
    # -----------------------------------------------------------------------
    #
    # The config used here exposes port 9092 for _external_ connections to the broker
    # i.e. those from _outside_ the docker network. This could be from the host machine
    # running docker, or maybe further afield if you've got a more complicated setup.
    # If the latter is true, you will need to change the value 'localhost' in
    # KAFKA_ADVERTISED_LISTENERS to one that is resolvable to the docker host from those
    # remote clients
    #
    # For connections _internal_ to the docker network, such as from other services
    # and components, use kafka:29092.
    #
    # See https://rmoff.net/2018/08/02/kafka-listeners-explained/ for details
    # "`-._,-'"`-._,-'"`-._,-'"`-._,-'"`-._,-'"`-._,-'"`-._,-'"`-._,-'"`-._,-
    #
      - 9092:9092
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
      KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:29092,PLAINTEXT_HOST://localhost:9092
      KAFKA_AUTO_CREATE_TOPICS_ENABLE: "true"
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 100

  schema-registry:
    image: confluentinc/cp-schema-registry:5.5.0
    container_name: schema-registry
    ports: 
      - 8081:8081
    depends_on:
      - zookeeper
      - kafka
    environment:
      SCHEMA_REGISTRY_HOST_NAME: schema-registry
      SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL: zookeeper:2181

  kafka-connect:
    image: confluentinc/cp-kafka-connect-base:5.5.0
    container_name: kafka-connect
    depends_on:
      - zookeeper
      - kafka
      - schema-registry
    ports:
      - 8083:8083
    environment:
      CONNECT_BOOTSTRAP_SERVERS: "kafka:29092"
      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.storage.StringConverter
      CONNECT_VALUE_CONVERTER: io.confluent.connect.avro.AvroConverter
      CONNECT_VALUE_CONVERTER_SCHEMA_REGISTRY_URL: 'http://schema-registry:8081'
      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: "kafka-connect"
      CONNECT_LOG4J_ROOT_LOGLEVEL: "INFO"
      CONNECT_LOG4J_APPENDER_STDOUT_LAYOUT_CONVERSIONPATTERN: "[%d] %p %X{connector.context}%m (%c:%L)%n"
      CONNECT_LOG4J_LOGGERS: "org.apache.kafka.connect.runtime.rest=WARN,org.reflections=ERROR"
      CONNECT_CONFIG_STORAGE_REPLICATION_FACTOR: "1"
      CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR: "1"
      CONNECT_STATUS_STORAGE_REPLICATION_FACTOR: "1"
      CONNECT_PLUGIN_PATH: '/usr/share/java,/usr/share/confluent-hub-components/'
      #
      # Make sure you set this for the correct path that the library files for InstantClient have been installed into
      LD_LIBRARY_PATH: '/usr/share/java/debezium-connector-oracle/instantclient_19_6/'
    command: 
      - bash 
      - -c 
      - |
        echo "Installing connector plugins"
        confluent-hub install --no-prompt confluentinc/kafka-connect-jdbc:5.5.0
        confluent-hub install --no-prompt confluentinc/kafka-connect-datagen:0.3.2
        #
        echo "Downloading JDBC drivers"
        cd /usr/share/confluent-hub-components/confluentinc-kafka-connect-jdbc/lib
        curl https://maven.xwiki.org/externals/com/oracle/jdbc/ojdbc8/12.2.0.1/ojdbc8-12.2.0.1.jar -o ojdbc8-12.2.0.1.jar
        # -----------
        # Install Debezium Oracle connector and required libraries
        # -- Download
        curl "https://oss.sonatype.org/service/local/repositories/snapshots/content/io/debezium/debezium-connector-oracle/1.2.0-SNAPSHOT/debezium-connector-oracle-1.2.0-20200612.041347-34-plugin.tar.gz" | \
          tar xvfz - --directory /usr/share/java/
        # -- Install the required library files
        apt-get update
        apt-get install -y --force-yes unzip libaio1
        wget "https://download.oracle.com/otn_software/linux/instantclient/19600/instantclient-basiclite-linux.x64-19.6.0.0.0dbru.zip" -O /tmp/ic.zip
        unzip /tmp/ic.zip -d /usr/share/java/debezium-connector-oracle/
        # -----------
        # Launch the Kafka Connect worker
        /etc/confluent/docker/run &
        #
        # Don't exit
        sleep infinity

  ksqldb:
    image: confluentinc/ksqldb-server:0.9.0
    container_name: ksqldb
    depends_on:
      - kafka
      - kafka-connect
    ports:
      - "8088:8088"
    environment:
      KSQL_LISTENERS: http://0.0.0.0:8088
      KSQL_BOOTSTRAP_SERVERS: kafka:29092
      KSQL_KSQL_LOGGING_PROCESSING_STREAM_AUTO_CREATE: "true"
      KSQL_KSQL_LOGGING_PROCESSING_TOPIC_AUTO_CREATE: "true"
      KSQL_KSQL_CONNECT_URL: http://kafka-connect:8083
      KSQL_KSQL_SCHEMA_REGISTRY_URL: http://schema-registry:8081
      KSQL_KSQL_SERVICE_ID: confluent_rmoff_01
      KSQL_KSQL_HIDDEN_TOPICS: '^_.*'

# Other systems
  oracle:
    # You need to build this image first, following the instructions at 
    # https://github.com/oracle/docker-images/blob/master/OracleDatabase/SingleInstance/README.md
    #
    # NB: There's no sudo on the image but you can run stuff as root using
    # docker exec -it -u root oracle <cmd>
    # e.g.: docker exec -it -u root oracle bash -c "rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm &&  yum install -y rlwrap"
    image: oracle/database:12.2.0.1-ee
    container_name: oracle
    environment:
      - ORACLE_PWD=Admin123
    ports:
      - 1521:1521
    volumes:
      - $PWD/oradata:/opt/oracle/oradata
      - $PWD/oradata/recovery_area:/opt/oracle/oradata/recovery_area
      - $PWD/ora-setup-scripts:/opt/oracle/scripts/setup
      - $PWD/ora-startup-scripts:/opt/oracle/scripts/startup

  postgres:
    # *-----------------------------*
    # To connect to the DB: 
    #   docker exec -it postgres bash -c 'psql -U $POSTGRES_USER $POSTGRES_DB'
    # *-----------------------------*
    image: postgres:12
    container_name: postgres
    environment:
     - POSTGRES_USER=postgres
     - POSTGRES_PASSWORD=postgres

  kafkacat:
    image: edenhill/kafkacat:1.5.0
    container_name: kafkacat
    links:
      - kafka
      - schema-registry
    entrypoint: 
      - /bin/sh 
      - -c 
      - |
        apk add jq; 
        while [ 1 -eq 1 ];do sleep 60;done