kafka安装和简单测试
# 安装zookeeper（apache-zookeeper-3.5.6-bin）
https://archive.apache.org/dist/zookeeper/zookeeper-3.5.6/apache-zookeeper-3.5.6-bin.tar.gz
# 安装kafka（kafka_2.11-2.3.1）
http://mirrors.tuna.tsinghua.edu.cn/apache/kafka/2.3.1/kafka_2.11-2.3.1.tgz
# 启动zookeeper
[root@localhost apache-zookeeper-3.5.6-bin]# bin/zkServer.sh start
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: /svelldata/apache-zookeeper-3.5.6-bin/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
# 启动kafka server
[root@localhost kafka_2.11-2.3.1]# bin/kafka-server-start.sh config/server.properties
# 创建一个话题，test话题2个分区
[root@localhost kafka_2.11-2.3.1]# bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 2 --topic mytopic
或
[root@localhost kafka_2.11-2.3.1]# bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic mytopic
# 显示所有话题
[root@localhost kafka_2.11-2.3.1]# bin/kafka-topics.sh --list --zookeeper localhost:2181
# 显示话题信息
[root@localhost kafka_2.11-2.3.1]# bin/kafka-topics.sh --describe --zookeeper localhost:2181 --topic mytopic
# 启动一个生产者（输入消息）
[root@localhost kafka_2.11-2.3.1]# bin/kafka-console-producer.sh --broker-list localhost:9092 --topic mytopic
# 启动一个消费者（等待消息）
# 注意这里的--from-beginning，每次都会从头开始读取，你可以尝试去掉和不去掉看下效果
[root@localhost kafka_2.11-2.3.1]# bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic mytopic --from-beginning
或
[root@localhost kafka_2.11-2.3.1]# bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic mytopic
https://github.com/edenhill/librdkafka
yum install librdkafka-devel
https://github.com/arnaud-lb/php-rdkafka
https://github.com/arnaud-lb/php-rdkafka#installation
参考：
https://www.jianshu.com/p/6ff7f0ad2de9
https://segmentfault.com/a/1190000015765348
