docker启动kafka并挂载配置文件,并让外部环境连接kafka

2024-08-29 23:04

本文主要是介绍docker启动kafka并挂载配置文件,并让外部环境连接kafka,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!

docker 启动 kafka 并挂载配置文件,并让外部环境连接 kafka

拉取 kafka 镜像

docker pull apache/kafka:3.7.0

通过 docker 启动 kafka

docker run -d --name kafka -p 9092:9092 apache/kafka:3.7.0

创建宿主机的目录

创建宿主机的目录的作用是存放配置文件

mkdir -p /docker-data/kafka-data/

将 docker 容器中的文件复制到宿主机

docker cp kafka:/etc/kafka/docker/server.properties /docker-data/kafka-data/

关闭容器

docker rm -f kafka

修改配置文件

vim /docker-data/kafka-data/server.properties

内容如下(只需要修改 43 行和 51 行的 IP 就可以)

# 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.#
# This configuration file is intended for use in KRaft mode, where
# Apache ZooKeeper is not present.
############################## Server Basics ############################## The role of this server. Setting this puts us in KRaft mode
process.roles=broker,controller# The node id associated with this instance's roles
node.id=1# The connect string for the controller quorum
controller.quorum.voters=1@localhost:9093############################# Socket Server Settings ############################## The address the socket server listens on.
# Combined nodes (i.e. those with `process.roles=broker,controller`) must list the controller listener here at a minimum.
# If the broker listener is not defined, the default listener will use a host name that is equal to the value of java.net.InetAddress.getCanonicalHostName(),
# with PLAINTEXT listener name, and port 9092.
#   FORMAT:
#     listeners = listener_name://host_name:port
#   EXAMPLE:
#     listeners = PLAINTEXT://your.host.name:9092
# 把 IP 配置成 0.0.0.0
listeners=PLAINTEXT://0.0.0.0:9092,CONTROLLER://0.0.0.0:9093# Name of listener used for communication between brokers.
inter.broker.listener.name=PLAINTEXT# Listener name, hostname and port the broker will advertise to clients.
# If not set, it uses the value for "listeners".
# 我们要通过 linux 访问 docker 容器中的 kafka 所以把 IP 配置成 linux 的 IP
advertised.listeners=PLAINTEXT://39.105.58.131:9092# A comma-separated list of the names of the listeners used by the controller.
# If no explicit mapping set in `listener.security.protocol.map`, default will be using PLAINTEXT protocol
# This is required if running in KRaft mode.
controller.listener.names=CONTROLLER# 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=CONTROLLER:PLAINTEXT,PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL# The number of threads that the server uses for receiving requests from the network and sending responses to the network
num.network.threads=3# The number of threads that the server uses for processing requests, which may include 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 separated list of directories under which to store log files
log.dirs=/tmp/kraft-combined-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############################# Internal Topic Settings  #############################
# The replication factor for the group metadata internal topics "__consumer_offsets" and "__transaction_state"
# For anything other than development testing, a value greater than 1 is recommended to ensure availability such as 3.
offsets.topic.replication.factor=1
transaction.state.log.replication.factor=1
transaction.state.log.min.isr=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 excessive 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 unless the remaining
# segments 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

通过 docker 启动 kafka 并挂载配置文件

docker run -d --name kafka --restart=always -p 9092:9092 -v /docker-data/kafka-data:/mnt/shared/config apache/kafka:3.7.0

这样就通过 docker 启动 kafka 了,然后就可以通过外部环境连接了,如果还是连接不了,那就检查一下是否对外开放 9092、9093 这两个端口

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