如何在docker中设置zookeeper datadir(图yml)

mmvthczy  于 2021-06-08  发布在  Kafka
关注(0)|答案(2)|浏览(595)

我已经在docker的fig.yml文件中配置了zookeeper和kafka容器。两个容器都很好。但是在发送了大量消息之后,我的应用程序/zk客户端挂起。在检查zookeeper日志时,我看到错误: Error Path:/brokers Error:KeeperErrorCode = NoNode for /brokers 我的fig.yml如下:

zookeeper:
  image: wurstmeister/zookeeper
  ports:
    - "2181:2181"
  environment:
    ZK_ADVERTISED_HOST_NAME: xx.xx.x.xxx
    ZK_CONNECTION_TIMEOUT_MS: 6000
    ZK_SYNC_TIME_MS: 2000
    ZK_DATADIR: /path/to/data/zk/data/dir
kafka:
  image: wurstmeister/kafka:0.8.2.0
  ports:
    - "xx.xx.x.xxx:9092:9092"
  links:
    - zookeeper:zk
  environment:
    KAFKA_ADVERTISED_HOST_NAME: xx.xx.x.xxx
    KAFKA_LOG_DIRS: /home/svc_cis4/dl
  volumes:
    - /var/run/docker.sock:/var/run/docker.sock

我已经找了很长时间了,但还没有找到解决办法。我也尝试过使用zk\u datadir在fig.yml中设置数据目录:'/path/to/zk/data/dir',但似乎没有帮助。如有任何帮助,我们将不胜感激。
更新
的内容 /opt/kafka_2.10-0.8.2.0/config/server.properties :

broker.id=0
port=9092
num.network.threads=3
num.io.threads=8
socket.send.buffer.bytes=102400
socket.receive.buffer.bytes=102400
socket.request.max.bytes=104857600
num.partitions=1
num.recovery.threads.per.data.dir=1
log.retention.hours=168
log.segment.bytes=1073741824
log.retention.check.interval.ms=300000
log.cleaner.enable=false
zookeeper.connect=localhost:2181
zookeeper.connection.timeout.ms=6000
o3imoua4

o3imoua41#

在过去的两天里,我一直在使用的配置没有任何问题,包括为zookeeper和kafka指定主机地址。我的 fig.yml 内容是:

zookeeper:
  image: wurstmeister/zookeeper
  ports:
    - "xx.xx.x.xxx:2181:2181"
kafka:
  image: wurstmeister/kafka:0.8.2.0
  ports:
    - "9092:9092"
  links:
    - zookeeper:zk
  environment:
     KAFKA_ADVERTISED_HOST_NAME: xx.xx.x.xxx
     KAFKA_NUM_REPLICA_FETCHERS: 4
     ...other env variables...
  volumes:
    - /var/run/docker.sock:/var/run/docker.sock
validator:
  build: .
  volumes:
    - .:/host
  entrypoint: /bin/bash
  command: -c 'java -jar /host/app1.jar'
  links:
    - zookeeper:zk
    - kafka
analytics:
  build: .
  volumes:
    - .:/host
  entrypoint: /bin/bash
  command: -c 'java -jar /host/app2.jar'
  links:
    - zookeeper:zk
    - kafka
loader:
  build: .
  volumes:
    - .:/host
  entrypoint: /bin/bash
  command: -c 'java -jar /host/app3.jar'
  links:
    - zookeeper:zk
    - kafka

以及随行人员 Dockerfile 内容:

FROM ubuntu:trusty

MAINTAINER Wurstmeister

RUN apt-get update; apt-get install -y unzip openjdk-7-jdk wget git docker.io

RUN wget -q http://apache.mirrors.lucidnetworks.net/kafka/0.8.2.0/kafka_2.10-0.8.2.0.tgz -O /tmp/kafka_2.10-0.8.2.0.tgz
RUN tar xfz /tmp/kafka_2.10-0.8.2.0.tgz -C /opt

VOLUME ["/kafka"]

ENV KAFKA_HOME /opt/kafka_2.10-0.8.2.0
ADD start-kafka.sh /usr/bin/start-kafka.sh
ADD broker-list.sh /usr/bin/broker-list.sh
CMD start-kafka.sh
uemypmqf

uemypmqf2#

您遇到的问题与zookeeper的数据目录无关。错误 Error Path:/brokers Error:KeeperErrorCode = NoNode for /brokers 是因为您的应用程序在zookeeper的数据中找不到任何代理znode。发生这种情况可能是因为kafka容器没有正确连接zookeeper,而查看wurstmeister的图片,我认为问题可能与变量有关 KAFKA_ADVERTISED_HOST_NAME 可能是错的。我不知道是否有理由通过必须传递的env变量来分配该变量,但从我的观点来看,这不是一个好方法。有多种方法可以配置Kafka(实际上不需要设置 advertised.host.name 您可以对其进行注解,kafka将采用默认主机名(可以使用docker设置),但使用此选项的快速解决方案是编辑 start-kafka.sh 重建图像:


# !/bin/bash

if [[ -z "$KAFKA_ADVERTISED_PORT" ]]; then
    export KAFKA_ADVERTISED_PORT=$(docker port `hostname` 9092 | sed -r "s/.*:(.*)/\1/g")
fi
if [[ -z "$KAFKA_BROKER_ID" ]]; then
    export KAFKA_BROKER_ID=$KAFKA_ADVERTISED_PORT
fi
if [[ -z "$KAFKA_LOG_DIRS" ]]; then
    export KAFKA_LOG_DIRS="/kafka/kafka-logs-$KAFKA_BROKER_ID"
fi
if [[ -z "$KAFKA_ZOOKEEPER_CONNECT" ]]; then
    export KAFKA_ZOOKEEPER_CONNECT=$(env | grep ZK.*PORT_2181_TCP= | sed -e 's|.*tcp://||' | paste -sd ,)
fi

if [[ -n "$KAFKA_HEAP_OPTS" ]]; then
    sed -r -i "s/^(export KAFKA_HEAP_OPTS)=\"(.*)\"/\1=\"$KAFKA_HEAP_OPTS\"/g" $KAFKA_HOME/bin/kafka-server-start.sh
    unset KAFKA_HEAP_OPTS
fi

for VAR in `env`
do
  if [[ $VAR =~ ^KAFKA_ && ! $VAR =~ ^KAFKA_HOME ]]; then
    kafka_name=`echo "$VAR" | sed -r "s/KAFKA_(.*)=.*/\1/g" | tr '[:upper:]' '[:lower:]' | tr _ .`
    env_var=`echo "$VAR" | sed -r "s/(.*)=.*/\1/g"`
    if egrep -q "(^|^#)$kafka_name=" $KAFKA_HOME/config/server.properties; then
        sed -r -i "s@(^|^#)($kafka_name)=(.*)@\2=${!env_var}@g" $KAFKA_HOME/config/server.properties #note that no config values may contain an '@' char
    else
        echo "$kafka_name=${!env_var}" >> $KAFKA_HOME/config/server.properties
    fi
  fi
done

### NEW###

IP=$(hostname --ip-address)
sed -i -e "s/^advertised.host.name.*/advertised.host.name=$IP/" $KAFKA_HOME/config/server.properties

### END###

$KAFKA_HOME/bin/kafka-server-start.sh $KAFKA_HOME/config/server.properties

如果这不能解决您的问题,您可以在容器内启动会话(即: docker exec -it kafkadocker_kafka_1 /bin/bash 为了Kafka和 docker exec -it kafkadocker_zookeeper_1 /bin/bash 对于zookeeper的),并检查Kafka日志,或zookeeper控制台( /opt/zookeeper-3.4.6/bin/zkCli.sh )

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