Question

我无法在docker swarm中运行官方nifi映像。当我以常规模式启动容器时：

docker run --name nifi -p 8080:8080 -d apache/nifi:latest

一切正常，我可以在http://localhost:8080/nifi下访问该应用程序

但是，当我尝试在docker swarm中运行应用程序时：

docker swarm init
docker stack deploy -c docker-compose.yml nifi

使用以下docker-compose.yml

version: "3"
services:
  zookeeper:
    hostname: zookeeper
    container_name: zookeeper
    image: 'bitnami/zookeeper:latest'
    environment:
      - ALLOW_ANONYMOUS_LOGIN=yes
  nifi:
    image: apache/nifi:latest
    ports:
      - "8080:8080" 
    expose:
      - "8080"
    environment:
      - NIFI_WEB_HTTP_PORT=8080
      - NIFI_WEB_HTTP_HOST=localhost
      - NIFI_CLUSTER_IS_NODE=true
      - NIFI_CLUSTER_NODE_PROTOCOL_PORT=8082
      - NIFI_ZK_CONNECT_STRING=zookeeper:2181
      - NIFI_ELECTION_MAX_WAIT=1 min

应用程序启动（zookeeper和nifi），但是在http://localhost:8080/nifi下无法访问

curl http://localhost:8080
curl: (52) Empty reply from server

但是运行以下代码：

docker exec -it 629ecd6949d9 curl -v http://localhost:8080

表明nifi已启动并正在运行，但由于某些原因，它无法在外部容器中工作。

我快要用脑袋撞墙了。我该如何解决？

最佳 Paweł

Answer 1

重构了您的撰写文件。尝试使用它：

version: "3.3"
services:
  zookeeper:
    hostname: zookeeper
    image: 'bitnami/zookeeper:latest'
    environment:
      - ALLOW_ANONYMOUS_LOGIN=yes
  nifi:
    image: apache/nifi:latest
    ports:
      - target: 8080
        published: 8080
        protocol: tcp
        mode: host 
    environment:
      - NIFI_WEB_HTTP_PORT=8080
      - NIFI_WEB_HTTP_HOST=0.0.0.0
      - NIFI_CLUSTER_IS_NODE=true
      - NIFI_CLUSTER_NODE_PROTOCOL_PORT=8082
      - NIFI_ZK_CONNECT_STRING=zookeeper:2181
      - NIFI_ELECTION_MAX_WAIT=1 min

Answer 2

为了使NiFi映像以Docker群模式运行，您需要向docker-compose文件的environment部分添加NIFI_WEB_HTTP_HOST=0.0.0.0：

version: "3"
services:
  zookeeper:
    hostname: zookeeper
    container_name: zookeeper
    image: 'bitnami/zookeeper:latest'
    environment:
      - ALLOW_ANONYMOUS_LOGIN=yes
  nifi:
    image: apache/nifi:latest
    ports:
      - "8080:8080" 
    expose:
      - "8080"
    environment:
      - NIFI_WEB_HTTP_HOST=0.0.0.0  # This line right here

      - NIFI_WEB_HTTP_PORT=8080
      - NIFI_WEB_HTTP_HOST=localhost
      - NIFI_CLUSTER_IS_NODE=true
      - NIFI_CLUSTER_NODE_PROTOCOL_PORT=8082
      - NIFI_ZK_CONNECT_STRING=zookeeper:2181
      - NIFI_ELECTION_MAX_WAIT=1 min

Answer 3

对不起，如果NIFI_WEB_HOST = 0.0.0.0，那么当nifi容器尝试相互通信时会引起问题。

    2020-02-20 03:20:13,509 WARN [Replicate Request Thread-5] o.a.n.c.c.h.r.ThreadPoolRequestReplicator
java.net.SocketTimeoutException: timeout
        at okio.Okio$4.newTimeoutException(Okio.java:232)
        at okio.AsyncTimeout.exit(AsyncTimeout.java:285)
        at okio.AsyncTimeout$2.read(AsyncTimeout.java:241)
        at okio.RealBufferedSource.indexOf(RealBufferedSource.java:355)
        at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:227)
        at okhttp3.internal.http1.Http1Codec.readHeaderLine(Http1Codec.java:215)
        at okhttp3.internal.http1.Http1Codec.readResponseHeaders(Http1Codec.java:189)
        at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:88)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
        at okhttp3.RealCall.execute(RealCall.java:77)
        at org.apache.nifi.cluster.coordination.http.replication.okhttp.OkHttpReplicationClient.replicate(OkHttpReplicationClient.java:138)
        at org.apache.nifi.cluster.coordination.http.replication.okhttp.OkHttpReplicationClient.replicate(OkHttpReplicationClient.java:132)
        at org.apache.nifi.cluster.coordination.http.replication.ThreadPoolRequestReplicator.replicateRequest(ThreadPoolRequestReplicator.java:647)
        at org.apache.nifi.cluster.coordination.http.replication.ThreadPoolRequestReplicator$NodeHttpRequest.run(ThreadPoolRequestReplicator.java:839)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.SocketException: Socket closed
        at java.net.SocketInputStream.read(SocketInputStream.java:204)
        at java.net.SocketInputStream.read(SocketInputStream.java:141)
        at okio.Okio$2.read(Okio.java:140)
        at okio.AsyncTimeout$2.read(AsyncTimeout.java:237)
        ... 28 common frames omitted

无法在swarm中运行Apache nifi docker容器。空的回应

3 个答案: