Nifi 无法以 docker 启动

Question

我正在尝试将 nifi 与 docker 一起使用，但无济于事。我有以下 docker-文件

version: "3.7"
services:
  nifi_one:
    image: apache/nifi
    hostname: nifi_one
    container_name: nifi_one
    environment:
      NIFI_WEB_HTTP_HOST: "http://localhost"
      NIFI_WEB_HTTP_PORT: "8084"
      NIFI_CLUSTER_IS_NODE: "true"
      NIFI_CLUSTER_NODE_PROTOCOL_PORT: "8085"
      NIFI_ZK_CONNECT_STRING: "localhost:2181"
      NIFI_ELECTION_MAX_WAIT: "1 min"
    network_mode: host
    volumes:
      - ./nifi:/nifi

  nifi_two:
    image: apache/nifi
    hostname: nifi_two
    container_name: nifi_two
    depends_on:
     - nifi_one
    environment:
      NIFI_WEB_HTTP_HOST: "http://localhost"
      NIFI_WEB_HTTP_PORT: "8084"
      NIFI_CLUSTER_IS_NODE: "true"
      NIFI_CLUSTER_NODE_PROTOCOL_PORT: "8085"
      NIFI_ZK_CONNECT_STRING: "localhost:2181"
      NIFI_ELECTION_MAX_WAIT: "1 min"
    network_mode: host
    volumes:
      - ./nifi:/nifi

volumes:
  nifi:

我收到以下错误

2020-06-27 15:36:51,540 INFO [main] o.e.j.a.AnnotationConfiguration Scanning elapsed time=18ms 2020-06-27 15:36:51,542 INFO [main] o.e.j.server.handler.ContextHandler._ No Spring WebApplicationInitializer types detected on classpath 2020-06-27 15:36:51,684 INFO [main] o.e.jetty.server.handler.ContextHandler Started o.e.j.w.WebAppContext@51b35e4e{nifi-error,/,file:///opt/nifi/nifi-current/work/jetty/nifi-web-error-1.11.4.war/webapp/,AVAILABLE}{./work/nar/framework/nifi-framework-nar-1.11.4.nar-unpacked/NAR-INF/bundled-dependencies/nifi-web-error-1.11.4.war} 2020-06-27 15:36:51,922 WARN [main] org.apache.nifi.web.server.JettyServer Failed to start web server... shutting down. java.net.SocketException: Unresolved address at sun.nio.ch.Net.translateToSocketException(Net.java:131) at sun.nio.ch.Net.translateException(Net.java:157) at sun.nio.ch.Net.translateException(Net.java:163) at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:87) at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:342) at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:308) at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80) at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:236) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.eclipse.jetty.server.Server.doStart(Server.java:396) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:952) at org.apache.nifi.NiFi.(NiFi.java:158) at org.apache.nifi.NiFi.(NiFi.java:72) at org.apache.nifi.NiFi.main(NiFi.java:301) Caused by: java.nio.channels.UnresolvedAddressException: null at sun.nio.ch.Net.checkAddress(Net.java:101) at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:215) at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:85) ... 11 common frames omitted 2020-06-27 15:36:51,923 INFO [Thread-1] org.apache.nifi.NiFi Initiating shutdown of Jetty web server... 2020-06-27 15:36:51,938 INFO [Thread-1] o.eclipse.jetty.server.AbstractConnector Stopped ServerConnector@cb03411{HTTP/1.1,[http/1.1]}{http://localhost:8084} 2020-06-27 15:36:51,938 INFO [Thread-1] org.eclipse.jetty.server.session node0 Stopped scavenging

有人可以帮我解决这个问题吗？

Answer 1

需要修改三处才能解决问题（如果只修改一处，会抛出其他异常）：

删除行 NIFI_WEB_HTTP_HOST: "http://localhost"，因为它在加载网络服务器时抛出异常。
行 NIFI_CLUSTER_IS_NODE: "true" 应更改为 NIFI_CLUSTER_IS_NODE: "false"，因为未定义集群。
删除行 network_mode: host.

进行这些更改后，两个 Nifi 应用程序加载成功。

但是，YAML 文件中还缺少一项定义，这对于将 Nifi 应用程序公开给外部访问至关重要。
添加 ports: 定义可以修复 Nifi 应用程序侦听的外部端口。格式为{外部端口}:{内部端口}。

下面的 YAML 代码创建并加载了两个 Nifi 应用程序。一个暴露在http://localhost:8088/nifi，另一个暴露在http://localhost:8090/nifi.

注意三方共享的共享文件夹的定义：容器的主机，nifi_one，和nifi_two.

完整的定义是：

version: "2.0"
services:
  nifi_one:
    image: apache/nifi
    hostname: nifi_two
    container_name: nifi_one
    ports:
      - 8088:8080 # the internal port 8080 is exposed as 8088
    environment:
      NIFI_WEB_HTTP_PORT: "8080"
      NIFI_CLUSTER_IS_NODE: "false"
      NIFI_CLUSTER_NODE_PROTOCOL_PORT: "8085"
      NIFI_ZK_CONNECT_STRING: "localhost:2181"
      NIFI_ELECTION_MAX_WAIT: "1 min"
    volumes:
      - ./nifi-vol:/opt/nifi/nifi-current/temp2


  nifi_two:
    image: apache/nifi
    hostname: nifi_two
    container_name: nifi_two
    depends_on:
     - nifi_one
    ports:
      - 8090:8081 # setting a unique port to exemplify this feature 
    environment:
      NIFI_WEB_HTTP_PORT: "8081" # the Nifi listens to port 8081 in the container, which is exposed as 8090 externally
      NIFI_CLUSTER_IS_NODE: "false"
      NIFI_CLUSTER_NODE_PROTOCOL_PORT: "8085"
      NIFI_ZK_CONNECT_STRING: "localhost:2181"
      NIFI_ELECTION_MAX_WAIT: "1 min"
    volumes:
      - ./nifi-vol:/opt/nifi/nifi-current/temp2

volumes:
  nifi:

Nifi 无法以 docker 启动

Nifi cannot startup with docker

docker

docker-compose

apache-nifi