https://kafka.apache.org/quickstart
wget http://ftp.kddilabs.jp/infosystems/apache/kafka/0.10.2.0/kafka_2.11-0.10.2.0.tgz
tar -xvzf kafka_2.11-0.10.2.0.tgz
cd kafka_2.11-0.10.2.0/
ZooKeeper
ZooKeeper is used for managing and coordinating Kafka broker. ZooKeeper service is mainly used to notify producer and consumer about the presence of any new broker in the Kafka system or failure of the broker in the Kafka system. As per the notification received by the Zookeeper regarding presence or failure of the broker then pro-ducer and consumer takes decision and starts coordinating their task with some other broker.