centos8安装kafka(单机方式)

一，下载kafka

1,官网地址

http://kafka.apache.org/downloads.html

2,下载

[[email protected] source]# wget http://mirror.bit.edu.cn/apache/kafka/2.4.0/kafka_2.13-2.4.0.tgz

说明：架构森林是一个专注架构的博客，对应的源码可以访问这里获取

https://github.com/liuhongdi/

说明：作者邮箱: [email protected]

二，解压:

[[email protected] source]# tar -zxvf kafka_2.13-2.4.0.tgz 
[[email protected] source]# mv kafka_2.13-2.4.0 /usr/local/soft/

三，启动zookeeper

[[email protected] source]# systemctl status zookeeper
如果状态不是running则:
[[email protected] source]# systemctl start zookeeper

四，创建日志目录:

[[email protected] source]# cd /data/logs/
[[email protected] logs]# mkdir kafkalogs
[[email protected] logs]# chmod 777 kafkalogs

五，配置kafka的日志目录

[[email protected] ~]# vi /usr/local/soft/kafka_2.13-2.4.0/config/server.properties

只修改log.dirs的值，设置为自定义的kafka日志目录

log.dirs=/data/logs/kafkalogs

六，配置环境变量

[[email protected] ~]# vi /etc/profile

说明：增加kafka的所在目录变量,如下两行

export KAFKA_HOME=/usr/local/soft/kafka_2.13-2.4.0
export PATH=$PATH:$KAFKA_HOME/bin

七，启动服务/停止服务

启动kafka

[[email protected] ~]# /usr/local/soft/kafka_2.13-2.4.0/bin/kafka-server-start.sh -daemon /usr/local/soft/kafka_2.13-2.4.0/config/server.properties

停止kafka

[[email protected] ~]# /usr/local/soft/kafka_2.13-2.4.0/bin/kafka-server-stop.sh

八，测试kafka服务启动后端口是否绑定：

telnet到默认的端口9092

[[email protected] ~]# telnet localhost 9092
Trying ::1...
Connected to localhost.
Escape character is ‘^]‘.

九，用systemd管理kafka服务

1,创建service文件

[[email protected] ~]# vi /etc/systemd/system/kafka.service

文件内容为：

[Unit]
Description=Apache Kafka server (broker)
After=network.target  zookeeper.service

[Service]
Type=forking
User=root
Group=root
Environment=JAVA_HOME=/usr/local/soft/jdk-13.0.2
ExecStart=/usr/local/soft/kafka_2.13-2.4.0/bin/kafka-server-start.sh -daemon /usr/local/soft/kafka_2.13-2.4.0/config/server.properties
ExecStop=/usr/local/soft/kafka_2.13-2.4.0/bin/kafka-server-stop.sh
#Restart=on-failure

[Install]
WantedBy=multi-user.target

注意：Environment=JAVA_HOME=/usr/local/soft/jdk-13.0.2

这一行必须有，否则启动和关停时会报错

2,测试启动、停止kafka服务

启动

[[email protected] ~]# systemctl start kafka

停止

[[email protected] ~]# systemctl stop kafka

十，解决一个问题：

kafka-server-stop.sh不能正常关闭kafka

说明：此问题在fedora30上存在，centos8上面未发现：

修改一下脚本即可：

[[email protected] system]# vi /usr/local/soft/kafka_2.13-2.4.0/bin/kafka-server-stop.sh

把得到进程id的命令改成用jps获取
修改为：

#PIDS=$(ps ax | grep -i ‘kafka.Kafka‘ | grep java | grep -v grep | awk ‘{print $1}‘)
PIDS=$(jps -lm | grep -i ‘kafka.Kafka‘ | awk ‘{print $1}‘)

 说明：jps最好加上绝对路径

十一，查看本地已安装的kafka的版本:
进入到kafka安装目录下的libs目录下面，可以看到kafka_2.13-2.4.0.jar这个文件，

也可以用命令来获取:

[[email protected] libs]# find ./ -name *kafka_* | head -1 | grep -o ‘kafka[^n]*‘
kafka_2.13-2.4.0.jar

说明：2.13是Scala 的版本，2.4.0就是你kafka的版本

十二，查看本地centos的版本:

[[email protected] lib]# cat /etc/redhat-release 
CentOS Linux release 8.1.1911 (Core)

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centos8安装kafka(单机方式)

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