我想在Docker容器中实现kafka。 我也使用kafka的官方zookeper实例作为docker容器。
当我想写关于terminal的消息，在我的linux mint 18.1 OS上，我得到以下错误信息。
foo@bar ~ $ /opt/kafka/bin/kafka-console-producer.sh --broker-list localhost:32786 --topic topic Hello [2017-05-16 11:01:08,245] ERROR Error when sending message to topic topic with key: null, value: 5 bytes with error: (org.apache.kafka.clients.producer.internals.ErrorLoggingCallback) org.apache.kafka.common.errors.TimeoutException: Expiring 1 record(s) for topic-0: 1532 ms has passed since batch creation plus linger time 我不知道为什么。 这是我的docker文件。
卡夫卡configuration
# 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. # see kafka.server.KafkaConfig for additional details and defaults ############################# Server Basics ############################# # The id of the broker. This must be set to a unique integer for each broker. #broker.id=${BROKER_ID} # Switch to enable topic deletion or not, default value is false #delete.topic.enable=true ############################# Socket Server Settings ############################# # The address the socket server listens on. It will get the value returned from # java.net.InetAddress.getCanonicalHostName() if not configured. # FORMAT: # listeners = listener_name://host_name:port # EXAMPLE: # listeners = PLAINTEXT://your.host.name:9092 listeners=PLAINTEXT://0.0.0.0:9092 # Hostname and port the broker will advertise to producers and consumers. If not set, # it uses the value for "listeners" if configured. Otherwise, it will use the value # returned from java.net.InetAddress.getCanonicalHostName(). advertised.listeners=PLAINTEXT://0.0.0.0:9092 # Maps listener names to security protocols, the default is for them to be the same. See the config documentation for more details #listener.security.protocol.map=PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL # The number of threads handling network requests num.network.threads=3 # The number of threads doing disk I/O num.io.threads=8 # The send buffer (SO_SNDBUF) used by the socket server socket.send.buffer.bytes=102400 # The receive buffer (SO_RCVBUF) used by the socket server socket.receive.buffer.bytes=102400 # The maximum size of a request that the socket server will accept (protection against OOM) socket.request.max.bytes=104857600 ############################# Log Basics ############################# # A comma seperated list of directories under which to store log files log.dirs=/tmp/kafka-logs # The default number of log partitions per topic. More partitions allow greater # parallelism for consumption, but this will also result in more files across # the brokers. num.partitions=1 # The number of threads per data directory to be used for log recovery at startup and flushing at shutdown. # This value is recommended to be increased for installations with data dirs located in RAID array. num.recovery.threads.per.data.dir=1 ############################# Log Flush Policy ############################# # Messages are immediately written to the filesystem but by default we only fsync() to sync # the OS cache lazily. The following configurations control the flush of data to disk. # There are a few important trade-offs here: # 1. Durability: Unflushed data may be lost if you are not using replication. # 2. Latency: Very large flush intervals may lead to latency spikes when the flush does occur as there will be a lot of data to flush. # 3. Throughput: The flush is generally the most expensive operation, and a small flush interval may lead to exceessive seeks. # The settings below allow one to configure the flush policy to flush data after a period of time or # every N messages (or both). This can be done globally and overridden on a per-topic basis. # The number of messages to accept before forcing a flush of data to disk #log.flush.interval.messages=10000 # The maximum amount of time a message can sit in a log before we force a flush #log.flush.interval.ms=1000 ############################# Log Retention Policy ############################# # The following configurations control the disposal of log segments. The policy can # be set to delete segments after a period of time, or after a given size has accumulated. # A segment will be deleted whenever *either* of these criteria are met. Deletion always happens # from the end of the log. # The minimum age of a log file to be eligible for deletion due to age log.retention.hours=168 # A size-based retention policy for logs. Segments are pruned from the log as long as the remaining # segments don't drop below log.retention.bytes. Functions independently of log.retention.hours. #log.retention.bytes=1073741824 # The maximum size of a log segment file. When this size is reached a new log segment will be created. log.segment.bytes=1073741824 # The interval at which log segments are checked to see if they can be deleted according # to the retention policies log.retention.check.interval.ms=300000 ############################# Zookeeper ############################# # Zookeeper connection string (see zookeeper docs for details). # This is a comma separated host:port pairs, each corresponding to a zk # server. eg "127.0.0.1:3000,127.0.0.1:3001,127.0.0.1:3002". # You can also append an optional chroot string to the urls to specify the # root directory for all kafka znodes. zookeeper.connect=${ZOOKEEPER_HOST}:2181 # Timeout in ms for connecting to zookeeper zookeeper.connection.timeout.ms=6000
我的docker-compose.yml
version: '2' services: kafka: image: kafka restart: always ports: - 9092 environment: ZOOKEEPER_HOST: zookeeper KAFKA_HOST: kafka networks: u: aliases: - kafka zoo1: image: zookeeper restart: always ports: - 2181:2181 environment: ZOO_MY_ID: 1 ZOO_TICK_TIME: 2000 ZOO_INIT_LIMIT: 5 ZOO_SYNC_LIMIT: 2 ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888 networks: u: aliases: - zookeeper - zoo1 zoo2: image: zookeeper restart: always ports: - 2182:2181 environment: ZOO_MY_ID: 2 ZOO_TICK_TIME: 2000 ZOO_INIT_LIMIT: 5 ZOO_SYNC_LIMIT: 2 ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888 networks: u: aliases: - zookeeper - zoo2 zoo3: image: zookeeper restart: always ports: - 2183:2181 environment: ZOO_MY_ID: 3 ZOO_TICK_TIME: 2000 ZOO_INIT_LIMIT: 5 ZOO_SYNC_LIMIT: 2 ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888 networks: u: aliases: - zookeeper - zoo3 networks: u:
docker工人
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 00e64ae8119a zookeeper "/docker-entrypoin..." 20 hours ago Up 15 minutes 2888/tcp, 3888/tcp, 0.0.0.0:2183->2181/tcp kafka_zoo3_1 1bebeb6bf4b4 zookeeper "/docker-entrypoin..." 20 hours ago Up 15 minutes 2888/tcp, 0.0.0.0:2181->2181/tcp, 3888/tcp kafka_zoo1_1 4385a814db83 zookeeper "/docker-entrypoin..." 20 hours ago Up 15 minutes 2888/tcp, 3888/tcp, 0.0.0.0:2182->2181/tcp kafka_zoo2_1 a0650d5a9c95 kafka "/bin/sh -c /usr/l..." 20 hours ago Up 15 minutes 0.0.0.0:32786->9092/tcp kafka_kafka_1
卡夫卡主题
foo@bar ~ $ /opt/kafka/bin/kafka-topics.sh --list --zookeeper localhost:2181 test topic