阿里云kafka安装
阿里云kafka安装
本案例使用的是kafka的版本是kafka_2.11-0.9.0.1,zookeeper的版本是zookeeper-3.4.6,jdk1.7.0_79 来安装一个简单测试环境。
一、安装启动zookeeper
1 . 去官网下载zookeeper-3.4.6.tar.gz
2 . 解压文件,设置zookeeper环境变量(ZOOKEEPER_HOME)
设置完后的etc/profile文件部分内容如下:
JAVA_HOME=/usr/java/jdk1.7.0_79
JRE_HOME=/usr/java/jdk1.7.0_79/jre
CLASS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
export JAVA_HOME JRE_HOME PATH CLASSPATH
export MAVEN_HOME=/usr/maven/apache-maven-3.5.0
export PATH=${MAVEN_HOME}/bin:${PATH}
export ZOOKEEPER_HOME=/usr/zookeeper/zookeeper-3.4.6
export PATH=${ZOOKEEPER_HOME}/bin:${PATH}
export PATH
别忘了,立即生效执行的命令: source /etc/profile
3 . 修改zookeeper文件下config目录下zoo_sample.cfg为zoo.cfg(下载完默认的端口号就是2181)
4 . 启动zookeeper cd /home/usr/zookeeper/zookeeper-3.4.6/bin(zookeeper的安装目录)
JMX enabled by defaultUsing config: /root/hadoop-0.20.2/zookeeper-3.3.1/bin/../conf/zoo.cfgStarting zookeeper ...STARTED
查看zookeeper占用的进程ID
ps -ef|grep zookeeper
如果现实这样代表启动成功
二、安装启动kafka
- 去官网下载kafka_2.11-0.9.0.1.tgz
- 解压文件,解压目录为: /home/kafka/kafka_2.11-0.9.0.1,修改config/server.properties内容为:
# 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=0############################# Socket Server Settings #############################listeners=PLAINTEXT://:9092# The port the socket server listens on
port=9092# Hostname the broker will bind to. If not set, the server will bind to all interfaces
host.name=x.x.x.x# Hostname the broker will advertise to producers and consumers. If not set, it uses the
# value for "host.name" if configured. Otherwise, it will use the value returned from
# java.net.InetAddress.getCanonicalHostName().
advertised.host.name=x.x.x.x# The port to publish to ZooKeeper for clients to use. If this is not set,
# it will publish the same port that the broker binds to.
#advertised.port=<port accessible by clients># 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
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.
#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. e.g. "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=localhost:2181# Timeout in ms for connecting to zookeeper
zookeeper.connection.timeout.ms=6000
其中需要注意的参数配置为:host.name=阿里云的内网地址,advertised.host.name=阿里云的外网地址。
3 . 启动kafka,进去bin目录,输入命令:
./kafka-server-start.sh ../config/server.properties
需要注意:因为我阿里云这台服务器内存配置比较低,需要修改kafka-server-start.sh里的内容。export KAFKA_HEAP_OPTS="-Xmx1G -Xms1G"
-> export KAFKA_HEAP_OPTS="-Xmx512M -Xms512M"
4 .正常启动后,显示INFO KafkaConfig values: …, ps -ef|grep kafka
代表启动成功。
三、kafka创建topic简单测试
- 不要关闭kafka服务,再开启一个终端,创建topic。
./kafka-topics.sh –create –zookeeper localhost:2181 –replication-factor 1 –partitions 1 –topic test - 查看所有topic列表
./kafka-topics.sh –list –zookeeper localhost:2181
这是会显示出test - 查看单个topic的详情
./kafka-topics.sh –describe –zookeeper localhost:2181 –topic test - product测试发送消息
在该终端上输入:
/kafka-console-producer.sh –broker-list localhost:9092 –topic test
每一个回车命令就是向kafka发送一条数据,该案列发送了2条数据。 - consumer测试接受消息
再另开一个终端,输入:
./kafka-console-consumer.sh –zookeeper localhost:2181 –topic test –from-beginning
可以看到接受到了最新的2条消息。
四、手动删除topic
- 删除kafka存储目录(server.properties文件log.dirs配置,默认为”/tmp/kafka-logs”)相关topic目录
- 如果kafaka启动时加载的配置文件中server.properties没有配置delete.topic.enable=true,那么此时的删除并不是真正的删除,而是把topic标记为:marked for deletion
- 登录zookeeper客户端:命令 cd zookeeperHome/bin ./zkCli.sh
- 找到topic所在的目录:ls /brokers/topics
- 找到要删除的topic,执行命令:rmr /brokers/topics/test 即可,此时topic被彻底删除。(此处删除的是元数据)
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