配置单机kafka

关闭selinux，开启防火墙9092端口

1、关闭selinux

vi /etc/selinux/config
 
#SELINUX=enforcing #注释掉
 
#SELINUXTYPE=targeted #注释掉
 
SELINUX=disabled #增加
 
:wq! #保存退出
 
setenforce 0 #使配置立即生效

2、配置防火墙，开启9092端口号

vi /etc/sysconfig/iptables #编辑防火墙配置文件
 
# Firewall configuration written by system-config-firewall
 
# Manual customization of this file is not recommended.
 
*filter
 
:INPUT ACCEPT [0:0]
 
:FORWARD ACCEPT [0:0]
 
:OUTPUT ACCEPT [0:0]
 
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
 
-A INPUT -p icmp -j ACCEPT
 
-A INPUT -i lo -j ACCEPT
 
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
 
-A INPUT -m state --state NEW -m tcp -p tcp --dport 9092 -j ACCEPT
 
-A INPUT -j REJECT --reject-with icmp-host-prohibited
 
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
 
COMMIT

:wq! #保存退出
 
service iptables restart #最后重启防火墙使配置生效

安装jdk

kafka运行需要JDK支持

下载地址：https://www.oracle.com/java/technologies/javase-downloads.html

历史版本：https://www.oracle.com/java/technologies/oracle-java-archive-downloads.html

这里稍微多说一句，下载地址偶尔是会变动的，上面的地址是截止到这片文章发布时的最新链接；但是一般Oracle都会做兼容（如果上面的链接失效了，点开后一般会重定向到对应的新地址），下载界面也可能会随着网站整体UI而更新，但都是大同小异，进到Oracle官网按照导航找到需要的JDK版本并不是很难

1、解压安装

shell> mkdir /usr/local/java
shell> cd /usr/local/java
shell> tar -zxvf /tools/jdk-8u241-linux-x64.tar.gz
 
shell> ll
total 4
drwxr-xr-x 7 10143 10143 4096 Dec 11 18:39 jdk1.8.0_241

2、配置环境变量

shell> vim /etc/profile

文件末尾增加以下配置

# JDK
export JAVA_HOME=/usr/local/java/jdk1.8.0_241
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

使配置生效

source /etc/profile

3、测试

shell> java -version
java version "1.8.0_241"
Java(TM) SE Runtime Environment (build 1.8.0_241-b07)
Java HotSpot(TM) 64-Bit Server VM (build 25.241-b07, mixed mode)

安装ZooKeeper

安装kafka前还需要安装Zookeeper，zookeeper是运行在java环境下的。

1、下载

官网：http://zookeeper.apache.org/releases.html

镜像：https://www.apache.org/dyn/closer.cgi/zookeeper

2、解压

tar -zxvf apache-zookeeper-3.5.8-bin.tar.gz -C /usr/local/

3、修改配置

shell> cd /usr/local/apache-zookeeper-3.5.8-bin/conf/
shell> cp zoo_sample.cfg zoo.cfg
shell> vim zoo.cfg

dataDir=/usr/local/apache-zookeeper-3.5.8-bin/data
dataLogDir=/usr/local/apache-zookeeper-3.5.8-bin/logs

4、启动&停止

# 启动
 
shell> bin/zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper-3.5.3-beta/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

# 查看状态
 
shell> bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper-3.5.3-beta/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost.
Mode: standalone

# 停止
 
shell> bin/zkServer.sh stop
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper-3.5.3-beta/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED

# 重启
 
shell> bin/zkServer.sh restart
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper-3.5.3-beta/bin/../conf/zoo.cfg
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper-3.5.3-beta/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper-3.5.3-beta/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

5、测试

# jps，查看QuorumPeerMain是否存在
 
shell> jps
19748 Jps
19159 QuorumPeerMain

# zkServer.sh status
 
shell> bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper-3.5.3-beta/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost.
Mode: standalone

# zkClient
 
shell> bin/zkCli.sh -server localhost:2181
Connecting to localhost:2181
2020-03-26 23:41:43,303 [myid:] - INFO  [main:] - Client environment:zookeeper.version=3.5.3-beta-8ce24f9e675cbefffb8f21a47e06b42864475a60, built on 04/03/2017 16:19 GMT
2020-03-26 23:41:43,306 [myid:] - INFO  [main:] - Client environment:host.name=VM_2_24_centos
2020-03-26 23:41:43,306 [myid:] - INFO  [main:] - Client environment:java.version=1.8.0_241
2020-03-26 23:41:43,308 [myid:] - INFO  [main:] - Client environment:java.vendor=Oracle Corporation
2020-03-26 23:41:43,308 [myid:] - INFO  [main:] - Client environment:java.home=/usr/local/java/jdk1.8.0_241/jre
2020-03-26 23:41:43,308 [myid:] - INFO  [main:] - Client environment:java.class.path=/usr/local/zookeeper-3.5.3-beta/bin/../build/classes:/usr/local/zookeeper-3.5.3-beta/bin/../build/lib/*.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/slf4j-log4j12-1.7.5.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/slf4j-api-1.7.5.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/netty-3.10.5.Final.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/log4j-1.2.17.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/jline-2.11.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/jetty-util-9.2.18.v20160721.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/jetty-servlet-9.2.18.v20160721.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/jetty-server-9.2.18.v20160721.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/jetty-security-9.2.18.v20160721.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/jetty-io-9.2.18.v20160721.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/jetty-http-9.2.18.v20160721.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/javax.servlet-api-3.1.0.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/jackson-mapper-asl-1.9.11.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/jackson-core-asl-1.9.11.jar:/usr/local/zookeeper-3.5.3-beta/bin/../lib/commons-cli-1.2.jar:/usr/local/zookeeper-3.5.3-beta/bin/../zookeeper-3.5.3-beta.jar:/usr/local/zookeeper-3.5.3-beta/bin/../src/java/lib/*.jar:/usr/local/zookeeper-3.5.3-beta/bin/../conf:.:/usr/local/java/jdk1.8.0_241/lib/dt.jar:/usr/local/java/jdk1.8.0_241/lib/tools.jar
2020-03-26 23:41:43,308 [myid:] - INFO  [main:] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2020-03-26 23:41:43,308 [myid:] - INFO  [main:] - Client environment:java.io.tmpdir=/tmp
2020-03-26 23:41:43,308 [myid:] - INFO  [main:] - Client environment:java.compiler=<NA>
2020-03-26 23:41:43,308 [myid:] - INFO  [main:] - Client environment:os.name=Linux
2020-03-26 23:41:43,308 [myid:] - INFO  [main:] - Client environment:os.arch=amd64
2020-03-26 23:41:43,308 [myid:] - INFO  [main:] - Client environment:os.version=3.10.0-1062.9.1.el7.x86_64
2020-03-26 23:41:43,308 [myid:] - INFO  [main:] - Client environment:user.name=root
2020-03-26 23:41:43,309 [myid:] - INFO  [main:] - Client environment:user.home=/root
2020-03-26 23:41:43,309 [myid:] - INFO  [main:] - Client environment:user.dir=/usr/local/zookeeper-3.5.3-beta
2020-03-26 23:41:43,309 [myid:] - INFO  [main:] - Client environment:os.memory.free=52MB
2020-03-26 23:41:43,310 [myid:] - INFO  [main:] - Client environment:os.memory.max=228MB
2020-03-26 23:41:43,310 [myid:] - INFO  [main:] - Client environment:os.memory.total=57MB
2020-03-26 23:41:43,313 [myid:] - INFO  [main:] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 
2020-03-26 23:41:43,323 [myid:] - INFO  [main:] - jute.maxbuffer value is 4194304 Bytes
Welcome to ZooKeeper!
2020-03-26 23:41:43,335 [myid:localhost:2181] - INFO  [main-SendThread(localhost:2181):] - Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error)
JLine support is enabled
2020-03-26 23:41:43,401 [myid:localhost:2181] - INFO  [main-SendThread(localhost:2181):] - Socket connection established, initiating session, client: /0:0:0:0:0:0:0:1:42446, server: localhost/0:0:0:0:0:0:0:1:2181
2020-03-26 23:41:43,412 [myid:localhost:2181] - INFO  [main-SendThread(localhost:2181):] - Session establishment complete on server localhost/0:0:0:0:0:0:0:1:2181, sessionid = 0x10009d728340001, negotiated timeout = 30000
 
WATCHER::
 
WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper]

安装kafka

1、安装前准备

安装JDK

安装ZooKeeper

2、解压

shell> tar -zxvf kafka_2.12-2.2.2.tgz -C /usr/local/

3、配置

cd /usr/local/kafka_2.12-2.2.2/config/
vim server.properties

编辑以下内容

############################# Server Basics #############################
broker.id=0  # 集群的话，这个id会不同，也可以自定义
port=9092  # kafka的端口号，可以不配置此项，默认为9092
host.name=172.17.194.139  # 阿里云内网地址
advertised.host.name=123.56.162.92  # 阿里云外网映射地址
 
# 默认为/tmp/kafka-logs，可能会被删掉
log.dirs=/usr/local/kafka_2.12-2.2.2/logs
 
# 监听地址，ifconfig查看到的本机真实地址，单节点不配置也可以
# 如果部署在阿里云服务器上，此处不能配置为公网ip，会直接启动不了kafka
# 阿里云服务器上需要配置为：listeners=PLAINTEXT://:9092，或者内网IP
listeners=PLAINTEXT://172.17.194.139:9092
 
 
# 打开注释，设置为对外可访问的地址，可以是主机名，也可以是ip地址，但一定是连接kafka的其他机器可以访问到的地址，简单来说就果是云主机并且直接通过外网访问kafka（一般不这么做，但是如果这么做了），需要设置成弹性ip或绑定的域名
# advertised.listeners=PLAINTEXT://tianranll.cn:9092
# 如果部署在本地虚拟机中，此处可以不开注释；
# 如果部署在云服务器中，需要配置此处ip为公网ip
advertised.listeners=PLAINTEXT://123.56.162.92:9092
 
 
# zookeeper地址及端口号
# 如果是集群，可能是这样：hostname1:port1,hostname2:port2,hostname3:port3
# 如果是带有chroot：hostname1:port1,hostname2:port2,hostname3:port3/chroot/path
zookeeper.connect=172.17.194.139:2181  # zookeeper如果和kafka装在同一台机器上，设置为阿里云的内网IP即可。

4、启动&停止

# 启动
cd /usr/local/kafka_2.12-2.2.2/
nohup bin/kafka-server-start.sh config/server.properties

如果使用kafka-manager，需要开启JMX_PORT

shell> JMX_PORT=9999 bin/kafka-server-start.sh -daemon config/server.properties

shell> bin/kafka-server-stop.sh

5、测试

1、jps，确认kafka是否存在（或者ps查看kafka相关进程）

2、zookeeper查看注册信息

shell> cd /usr/local/apache-zookeeper-3.5.8-bin/
shell> bin/zkCli.sh
[zk: localhost:2181(CONNECTED) 0] ls /brokers/ids
[0]
[zk: localhost:2181(CONNECTED) 1] get /brokers/ids/0
{"listener_security_protocol_map":{"PLAINTEXT":"PLAINTEXT"},"endpoints":["PLAINTEXT://VM_2_24_centos:9092"],"jmx_port":-1,"host":"VM_2_24_centos","timestamp":"1585396767598","port":9092,"version":4}

3、kafka命令

创建topic

shell> bin/kafka-topics.sh --create --bootstrap-server 123.56.162.92:9092 --replication-factor 1 --partitions 1 --topic test

查看topic

shell> bin/kafka-topics.sh --list --bootstrap-server 123.56.162.92:9092:9092
test

生产者发送消息

shell> bin/kafka-console-producer.sh --broker-list 123.56.162.92:9092:9092 --topic test
>Hello
>World

消费者消费消息

shell> bin/kafka-console-consumer.sh --bootstrap-server 123.56.162.92:9092 --topic test --from-beginning
Hello

创建启动脚本

cd /usr/local//usr/local/kafka_2.12-2.2.2
vim kafkastart.sh

#!/bin/sh
 
#启动zookeeper
 
/usr/local/apache-zookeeper-3.5.8-bin/bin/zkServer.sh start &
 
sleep 3 #等3秒后执行
 
#守护进程启动kafka
nohup /usr/local/kafka_2.12-2.2.2/bin/kafka-server-start.sh /usr/local/kafka_2.12-2.2.2/config/server.properties > /dev/null 2>&1 &

创建关闭脚本

vim kafkastop.sh

#!/bin/sh
 
#关闭zookeeper
 
/usr/local/apache-zookeeper-3.5.8-bin/bin/zkServer.sh stop &
 
sleep 3 #等3秒后执行
 
#关闭kafka
 
/usr/local/kafka_2.12-2.2.2/bin/kafka-server-stop.sh &

添加脚本执行权限

#添加脚本执行权限
 
chmod +x kafkastart.sh
 
chmod +x kafkastop.sh

设置脚本开机自动执行

vi /etc/rc.d/rc.local #编辑，在最后添加一行
 
sh /usr/local/kafka/kafkastart.sh & ＃设置开机自动在后台运行脚本
 
:wq! #保存退出
 
sh /usr/local/kafka/kafkastart.sh #启动kafka
 
sh /usr/local/kafka/kafkastop.sh #关闭kafka