[Kafka] Install and setup Kafka

Kafka is used for building real-time data pipelines and streaming apps. It is horizontally scalable, fault-tolerant, wicked fast, and runs in production in thousands of companies.



Install and setup Kafka
$ sudo useradd kafka -m
$ sudo passwd kafka
$ sudo adduser kafka sudo
$ su - kafka
$ sudo apt-get install zookeeperd


To make sure that it is working, connect to it via Telnet:
$telnet localhost 2181
$ mkdir -p ~/Downloads
$ wget "http://mirror.cc.columbia.edu/pub/software/apache/kafka/0.8.2.1/kafka_2.11-0.8.2.1.tgz" -O ~/Downloads/kafka.tgz
$ mkdir -p ~/kafka && cd ~/kafka
$ tar -xvzf ~/Downloads/kafka.tgz --strip 1
$ vi ~/kafka/config/server.properties

By default, Kafka doesn't allow you to delete topics. To be able to delete topics, add the following line at the end of the file:
⇒ delete.topic.enable = true

Start Kafka
$ nohup ~/kafka/bin/kafka-server-start.sh ~/kafka/config/server.properties > ~/kafka/kafka.log 2>&1 &

Publish the string "Hello, World" to a topic called TutorialTopic by typing in the following:
$ echo "Hello, World" | ~/kafka/bin/kafka-console-producer.sh --broker-list localhost:9092 --topic TutorialTopic
$ ~/kafka/bin/kafka-console-consumer.sh --zookeeper localhost:2181 --topic TutorialTopic --from-beginning