Question

我正在尝试运行以下Apache Nifi流，并将数据从Kafka放入HDFS：

我正在运行Confluent Kafka，而我的Hadoop实例是Cloudera快速入门。

Cloudera快速入门

docker run --hostname=quickstart.cloudera --privileged=true -t -i -p 8888:8888 -p 7180:7180 -p 80:80 -p 50070:50070 -p 8020:8020 -p 50010:50010 -p 50020:50020 -p 50075:50075 -p 50475:50475 -p 50090:50090 -p 50495:50495 -v $(pwd):/home/cloudera -w /home/cloudera cloudera/quickstart /usr/bin/docker-quickstart

融合卡夫卡 https://github.com/confluentinc/cp-docker-images/tree/master/examples/cp-all-in-one

当Nifi尝试将数据放入HDFS时，我收到以下错误。 Nifi能够成功连接到HDFS（尽管如此，我的配置文件仍在下面供参考）。

根据我的初步研究，似乎namenode无法与HDFS中的datanode通信，但是我在hdfs-site.xml中的地址似乎正确。我的机器上也暴露了端口，以便Nifi无需使用docker网络即可与Hadoop通信。

org.apache.nifi.processor.exception.ProcessException: IOException thrown from PutHDFS[id=07704347-0165-1000-b8f7-b53809532c9a]: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /topics/users/.10180050823815 could only be replicated to 0 nodes instead of minReplication (=1).  There are 1 datanode(s) running and 1 node(s) are excluded in this operation.
    at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1595)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3287)
    at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:677)
    at org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.addBlock(AuthorizationProviderProxyClientProtocol.java:213)
    at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:485)
    at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
    at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617)
    at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2086)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2082)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:415)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2080)

    at org.apache.nifi.controller.repository.StandardProcessSession.read(StandardProcessSession.java:2234)
    at org.apache.nifi.controller.repository.StandardProcessSession.read(StandardProcessSession.java:2179)
    at org.apache.nifi.processors.hadoop.PutHDFS$1.run(PutHDFS.java:299)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:360)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1942)
    at org.apache.nifi.processors.hadoop.PutHDFS.onTrigger(PutHDFS.java:229)
    at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
    at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1165)
    at org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:203)
    at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:117)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.hadoop.ipc.RemoteException: File /topics/users/.10180050823815 could only be replicated to 0 nodes instead of minReplication (=1).  There are 1 datanode(s) running and 1 node(s) are excluded in this operation.
    at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1595)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3287)
    at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:677)
    at org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.addBlock(AuthorizationProviderProxyClientProtocol.java:213)
    at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:485)
    at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
    at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617)
    at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2086)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2082)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:415)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2080)

    at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1491)
    at org.apache.hadoop.ipc.Client.call(Client.java:1437)
    at org.apache.hadoop.ipc.Client.call(Client.java:1347)
    at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:228)
    at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:116)
    at com.sun.proxy.$Proxy151.addBlock(Unknown Source)
    at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:496)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:422)
    at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:165)
    at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:157)
    at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:359)
    at com.sun.proxy.$Proxy152.addBlock(Unknown Source)
    at org.apache.hadoop.hdfs.DFSOutputStream.addBlock(DFSOutputStream.java:1031)
    at org.apache.hadoop.hdfs.DataStreamer.locateFollowingBlock(DataStreamer.java:1865)
    at org.apache.hadoop.hdfs.DataStreamer.nextBlockOutputStream(DataStreamer.java:1668)
    at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:716)

我已经使用以下配置文件设置了HDFS实例：

core-site.xml

<?xml version="1.0"?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<configuration>
  <property>
    <name>fs.defaultFS</name>
    <value>hdfs://10.0.1.28:8020</value>
  </property>

  <!-- OOZIE proxy user setting -->
  <property>
    <name>hadoop.proxyuser.oozie.hosts</name>
    <value>*</value>
  </property>
  <property>
    <name>hadoop.proxyuser.oozie.groups</name>
    <value>*</value>
  </property>

  <!-- HTTPFS proxy user setting -->
  <property>
    <name>hadoop.proxyuser.httpfs.hosts</name>
    <value>*</value>
  </property>
  <property>
    <name>hadoop.proxyuser.httpfs.groups</name>
    <value>*</value>
  </property>

  <!-- Llama proxy user setting -->
  <property>
    <name>hadoop.proxyuser.llama.hosts</name>
    <value>*</value>
  </property>
  <property>
    <name>hadoop.proxyuser.llama.groups</name>
    <value>*</value>
  </property>

  <!-- Hue proxy user setting -->
  <property>
    <name>hadoop.proxyuser.hue.hosts</name>
    <value>*</value>
  </property>
  <property>
    <name>hadoop.proxyuser.hue.groups</name>
    <value>*</value>
  </property>

</configuration>

hdfs-site.xml

<?xml version="1.0"?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<configuration>
  <property>
    <name>dfs.replication</name>
    <value>1</value>
  </property>
  <!-- Immediately exit safemode as soon as one DataNode checks in. 
       On a multi-node cluster, these configurations must be removed.  -->
  <property>
    <name>dfs.safemode.extension</name>
    <value>0</value>
  </property>
  <property>
     <name>dfs.safemode.min.datanodes</name>
     <value>1</value>
  </property>
  <property>
     <name>dfs.permissions.enabled</name>
     <value>false</value>
  </property>
  <property>
     <name>dfs.permissions</name>
     <value>false</value>
  </property>
  <property>
     <name>dfs.safemode.min.datanodes</name>
     <value>1</value>
  </property>
  <property>
     <name>dfs.webhdfs.enabled</name>
     <value>true</value>
  </property>
  <property>
     <name>hadoop.tmp.dir</name>
     <value>/var/lib/hadoop-hdfs/cache/${user.name}</value>
  </property>
  <property>
     <name>dfs.namenode.name.dir</name>
     <value>/var/lib/hadoop-hdfs/cache/${user.name}/dfs/name</value>
  </property>
  <property>
     <name>dfs.namenode.checkpoint.dir</name>
     <value>/var/lib/hadoop-hdfs/cache/${user.name}/dfs/namesecondary</value>
  </property>
  <property>
     <name>dfs.datanode.data.dir</name>
     <value>/var/lib/hadoop-hdfs/cache/${user.name}/dfs/data</value>
  </property>
  <property>
    <name>dfs.namenode.rpc-bind-host</name>
    <value>10.0.1.28</value>
  </property>

  <property>
    <name>dfs.namenode.servicerpc-address</name>
    <value>10.0.1.28:8022</value>
  </property>
  <property>
    <name>dfs.https.address</name>
    <value>10.0.1.28:50470</value>
  </property>
  <property>
    <name>dfs.namenode.http-address</name>
    <value>10.0.1.28:50070</value>
  </property>
  <property>
    <name>dfs.datanode.address</name>
    <value>10.0.1.28:50010</value>
  </property>
  <property>
    <name>dfs.datanode.ipc.address</name>
    <value>10.0.1.28:50020</value>
  </property>
  <property>
    <name>dfs.datanode.http.address</name>
    <value>10.0.1.28:50075</value>
  </property>
  <property>
    <name>dfs.datanode.https.address</name>
    <value>10.0.1.28:50475</value>
  </property>
  <property>
    <name>dfs.namenode.secondary.http-address</name>
    <value>10.0.1.28:50090</value>
  </property>
  <property>
    <name>dfs.namenode.secondary.https-address</name>
    <value>10.0.1.28:50495</value>
  </property>

  <!-- Impala configuration -->
  <property>
    <name>dfs.datanode.hdfs-blocks-metadata.enabled</name>
    <value>true</value>
  </property>
  <property>
    <name>dfs.client.file-block-storage-locations.timeout.millis</name>
    <value>10000</value>
  </property>
  <property>
    <name>dfs.client.read.shortcircuit</name>
    <value>true</value>
  </property>
  <property>
    <name>dfs.domain.socket.path</name>
    <value>/var/run/hadoop-hdfs/dn._PORT</value>
  </property>
</configuration>

编辑：更新了docker-compose.yml文件

---
version: '2'
services:
  zookeeper:
    image: confluentinc/cp-zookeeper:5.0.0-beta30
    hostname: zookeeper
    container_name: zookeeper
    ports:
      - "2181:2181"
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000

  broker:
    image: confluentinc/cp-enterprise-kafka:5.0.0-beta30
    hostname: broker
    container_name: broker
    depends_on:
      - zookeeper
    ports:
      - "9092:9092"
      - "29092:29092"
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: 'zookeeper:2181'
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://broker:9092,PLAINTEXT_HOST://localhost:29092
      KAFKA_METRIC_REPORTERS: io.confluent.metrics.reporter.ConfluentMetricsReporter
      KAFKA_ADVERTISED_HOST_NAME: ${DOCKER_KAFKA_HOST}
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      CONFLUENT_METRICS_REPORTER_BOOTSTRAP_SERVERS: broker:9092
      CONFLUENT_METRICS_REPORTER_ZOOKEEPER_CONNECT: zookeeper:2181
      CONFLUENT_METRICS_REPORTER_TOPIC_REPLICAS: 1
      CONFLUENT_METRICS_ENABLE: 'true'
      CONFLUENT_SUPPORT_CUSTOMER_ID: 'anonymous'

  schema-registry:
    image: confluentinc/cp-schema-registry:5.0.0-beta30
    hostname: schema-registry
    container_name: schema-registry
    depends_on:
      - zookeeper
      - broker
    ports:
      - "8081:8081"
    environment:
      SCHEMA_REGISTRY_HOST_NAME: schema-registry
      SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL: 'zookeeper:2181'

  connect:
    image: confluentinc/cp-kafka-connect:5.0.0-beta30
    hostname: connect
    container_name: connect
    depends_on:
      - zookeeper
      - broker
      - schema-registry
    ports:
      - "8083:8083"
    volumes:
      - mi2:/usr/share/java/monitoring-interceptors/
    environment:
      CONNECT_BOOTSTRAP_SERVERS: 'broker: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_CONFIG_STORAGE_REPLICATION_FACTOR: 1
      CONNECT_OFFSET_FLUSH_INTERVAL_MS: 10000
      CONNECT_OFFSET_STORAGE_TOPIC: docker-connect-offsets
      CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR: 1
      CONNECT_STATUS_STORAGE_TOPIC: docker-connect-status
      CONNECT_STATUS_STORAGE_REPLICATION_FACTOR: 1
      CONNECT_KEY_CONVERTER: io.confluent.connect.avro.AvroConverter
      CONNECT_KEY_CONVERTER_SCHEMA_REGISTRY_URL: 'http://schema-registry:8081'
      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_ZOOKEEPER_CONNECT: 'zookeeper:2181'
      CLASSPATH: /usr/share/java/monitoring-interceptors/monitoring-interceptors-5.0.0-beta30.jar
      CONNECT_PRODUCER_INTERCEPTOR_CLASSES: "io.confluent.monitoring.clients.interceptor.MonitoringProducerInterceptor"
      CONNECT_CONSUMER_INTERCEPTOR_CLASSES: "io.confluent.monitoring.clients.interceptor.MonitoringConsumerInterceptor"
      CONNECT_PLUGIN_PATH: /usr/share/java
      CONNECT_LOG4J_LOGGERS: org.apache.zookeeper=ERROR,org.I0Itec.zkclient=ERROR,org.reflections=ERROR

  control-center:
    #image: confluentinc/cp-enterprise-control-center:5.0.0-beta30
    image: confluentinc/cp-enterprise-control-center:5.0.0-beta1-2
    hostname: control-center
    container_name: control-center
    depends_on:
      - zookeeper
      - broker
      - schema-registry
      - connect
      - ksql-server
    ports:
      - "9021:9021"
    environment:
      CONTROL_CENTER_BOOTSTRAP_SERVERS: 'broker:9092'
      CONTROL_CENTER_ZOOKEEPER_CONNECT: 'zookeeper:2181'
      CONTROL_CENTER_CONNECT_CLUSTER: 'connect:8083'
      #CONTROL_CENTER_KSQL_URL: "http://ksql-server:8088"
      CONTROL_CENTER_KSQL_ENDPOINT: "http://ksql-server:8088"
      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

  ksql-server:
    image: confluentinc/cp-ksql-server:5.0.0-beta30
    hostname: ksql-server
    container_name: ksql-server
    depends_on:
      - broker
      - connect
    ports:
      - "8088:8088"
    environment:
      KSQL_CONFIG_DIR: "/etc/ksql"
      KSQL_LOG4J_OPTS: "-Dlog4j.configuration=file:/etc/ksql/log4j-rolling.properties"
      KSQL_BOOTSTRAP_SERVERS: "broker:9092"
      KSQL_HOST_NAME: ksql-server
      KSQL_APPLICATION_ID: "cp-all-in-one"
      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-cli:
    image: confluentinc/cp-ksql-cli:5.0.0-beta30
    container_name: ksql-cli
    depends_on:
      - broker
      - connect
      - ksql-server
    entrypoint: /bin/sh
    tty: true

  ksql-datagen:
    image: confluentinc/ksql-examples:5.0.0-beta30
    hostname: ksql-datagen
    container_name: ksql-datagen
    depends_on:
      - broker
      - schema-registry
      - connect
    volumes:
      - mi2:/usr/share/java/monitoring-interceptors/
    command: "bash -c 'echo Waiting for Kafka to be ready... && \
                       cub kafka-ready -b broker:9092 1 20 && \
                       echo Waiting for Confluent Schema Registry to be ready... && \
                       cub sr-ready schema-registry 8081 20 && \
                       echo Waiting a few seconds for topic creation to finish... && \
                       sleep 11 && \
                       cp /usr/share/java/monitoring-interceptors/monitoring-interceptors-5.0.0-beta30.jar /usr/share/java/ksql-examples/monitoring-interceptors-5.0.0-beta30.jar && \
                       tail -f /dev/null'"
    environment:
      KSQL_CONFIG_DIR: "/etc/ksql"
      KSQL_LOG4J_OPTS: "-Dlog4j.configuration=file:/etc/ksql/log4j-rolling.properties"
      STREAMS_BOOTSTRAP_SERVERS: broker:9092
      STREAMS_SCHEMA_REGISTRY_HOST: schema-registry
      STREAMS_SCHEMA_REGISTRY_PORT: 8081

  rest-proxy:
    image: confluentinc/cp-kafka-rest:latest
    depends_on:
      - zookeeper
      - 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:9092'
      KAFKA_REST_LISTENERS: "http://0.0.0.0:8082"
      KAFKA_REST_SCHEMA_REGISTRY_URL: 'http://schema-registry:8081'

  cloudera:
      image: cloudera/quickstart
      container_name: cloudera
      privileged: true
      tty: true
      command: /usr/bin/docker-quickstart
      ports:
        - 80:80
        - 7180:7180
        - 8020:8020
        - 8888:8888
        - 50070:50070
        - 50010:50010
        - 50020:50020
        - 50075:50075
        - 50475:50475
        - 50090:50090
        - 50495:50495
      volumes: 
        - ./:/home/cloudera
      working_dir: /home/cloudera

  nifi:
    image: apache/nifi
    container_name: nifi
    ports:
      - 8080:8080
    volumes:
      - ./config:/config

volumes:
    mi2: {}

Answer 1

如果您的NiFi容器位于同一Docker网络上，则不应使用硬编码的IP地址。

我的建议是编辑Confluent Compose文件（或制作一个单独的compose文件），然后使用您的docker run command并将其重塑为Compose格式

例如

cloudera-cdh:
  image: cloudera/quickstart 
  command: /usr/bin/docker-quickstart
  ports:
    - ...
  volumes: 
    - $PWD:/home/cloudera

对NiFi容器进行相同操作

然后，您的hdfs-site.xml文件应该能够通过服务名称通过Docker网络访问hdfs://cloudera-cdh:50070。

注意：您可以使用docker network create [name]并通过--network [name]传递docker run来完成类似的任务

FWIW，如果您只需要HDFS，则有更好的Hadoop容器不包含完整的CDH堆栈。（{bde2020和uhopper图片）

Answer 2

如果您为Directory的{{1}}属性配置了/path/to/your/files之类的路径，则可能需要将其更改为一个完整的属性，即使用NameNode主机名/ IP和端口像PutHDFS

无法从Apache Nifi连接到Docker中的Hadoop

2 个答案: