四、Kafka、debezium安装与环境配置

（1）下载Kafka安装包并解压到指定目录

（2）修改配置文件，分配broker.id

（3）复制到其他节点，配置环境变量

（4）创建Kafka插件目录，解压debezium插件到插件目录

（5）修改配置文件，复制到其他节点

以dataxc用户为例，脚本示例如下：

#!/bin/bash
# kafka.sh

# ---部署kafka集群---
nodes=(n101 n102 n103)
zk_connect='n101:2181,n102:2181,n103:2181'

#解压kafka到程序目录
cd /home/dataxc/sw && tar -zxvf kafka_2.13-2.8.0.tgz -C /home/dataxc/opt
cd /home/dataxc/opt && mv kafka_2.13-2.8.0 kafka

#复制kafka到其他节点
for node in ${nodes[*]:1}
	do
		scp -r /home/dataxc/opt/kafka dataxc@$node:/home/dataxc/opt/kafka
	done

#修改kafka配置文件
declare -i bid=0
for node in ${nodes[*]}
	do
		let bid+=1
		#配置broker.id、监听端口、zk集群地址、消息保留时长(hour)、偏移量保留时长(minute)
		ssh dataxc@$node sed -i "s/broker.id=0/broker.id=$bid/" /home/dataxc/opt/kafka/config/server.properties
		ssh dataxc@$node sed -i "s!#listeners=PLAINTEXT://:9092!listeners=PLAINTEXT://$node:9092!" /home/dataxc/opt/kafka/config/server.properties
		ssh dataxc@$node sed -i "s/zookeeper.connect=localhost:2181/zookeeper.connect=$zk_connect/" /home/dataxc/opt/kafka/config/server.properties
		ssh dataxc@$node 'sed -i "s/log.retention.hours=168/log.retention.hours=16800/" /home/dataxc/opt/kafka/config/server.properties;
		echo -e "offsets.retention.minutes=10080" >> /home/dataxc/opt/kafka/config/server.properties'
		#添加环境变量
		ssh dataxc@$node 'sed -i -e "/export JAVA_HOME=/a export KAFKA_HOME=/home/dataxc/opt/kafka" \
		-e "/^export PATH=/ s/$/\:\$KAFKA_HOME\/bin/" /home/dataxc/.bashrc;
		source /home/dataxc/.bashrc'
	done

:<<!
#启用外网访问
adips=(222.168.xx.xxx 222.168.xx.xxx 222.168.xx.xxx)
for adip in ${adips[*]}
	do
		ssh dataxc@$adip sed -i "s!#advertised.listeners=PLAINTEXT://your.host.name:9092!advertised.listeners=PLAINTEXT://$adip:9092!" /home/dataxc/opt/kafka/config/server.properties
	done
!

# ---部署debezium-connect---
bs='n101:9092,n102:9092,n103:9092'

#创建kafka插件目录
mkdir /home/dataxc/opt/kafka/plugins

#解压debezium-connector到指定目录
cd /home/dataxc/sw && find ./ -name "debezium-connector-*.tar.gz" -exec tar -zxvf {} -C /home/dataxc/opt/kafka/plugins \;

#添加kafka集群地址、创建插件目录
sed -i -e "s/bootstrap.servers=localhost:9092/bootstrap.servers=$bs/" \
-e '$a plugin.path=/home/dataxc/opt/kafka/plugins' /home/dataxc/opt/kafka/config/connect-distributed.properties

#复制到其他节点
for node in ${nodes[*]:1}
	do
		scp -r /home/dataxc/opt/kafka/plugins dataxc@$node:/home/dataxc/opt/kafka/plugins
		scp /home/dataxc/opt/kafka/config/connect-distributed.properties dataxc@$node:/home/dataxc/opt/kafka/config/connect-distributed.properties
	done

#启动kafka(所有节点)
#cd ${KAFKA_HOME} && bin/kafka-server-start.sh -daemon config/server.properties

#启动kafka-connect(所有节点)
#cd ${KAFKA_HOME} && bin/connect-distributed.sh -daemon config/connect-distributed.properties

#end