Monday, July 18, 2016

Getting started with Apache Kafka on windows environment. Run kafka, zoookeeper on windows environment


This post will explain you about how to work with apache kafka on windows environment along with zookeeper and java.

Pre requesties
1. Download Java latest version and install the same.
Setup the path variables where our java is installed.
2.Download zookeeper latest version and install the same.
Setup the path variables where our zookeeper is installed.
3.Download apache kafka latest version( kafka_2.10-0.10.0.0.tgz) and install the same.

Zookeeper setup

1. Go to confdir, where we have installed our zookeeper.
2. Rename zoo_sample.cfg to zoo.cfg
3. Open zoo.cfg file
4. find dataDir=/tmp/zookeeper to C:\zookeeper-3.3.6\data

5. Setup path for zookeeper in Environment variables


6. Open the Environment variables- click the system variables C:\spark\zookeeper-3.3.6\bin
7. If we want we can change the default port no 2181 in zoo.cfg file
8. Run the Zookeeper from cmd prompt. execute zkserver command
9. We can see the below image after successful zookeeper started


Kafka setup and run kafka

1. Untar the same and go to kafka config directory
2. Look for server.properties and edit the same
3. Find the log.dirs=/tmp/kafka-logs to log.dirs= “C:\spark\kafka_2.10-0.10.0.0\kafka-logs”
4. Now go to kafka installation directory – copy the installation path
5. Open the command prompt and go to kafka installation directory-
C:\spark\kafka_2.10-0.10.0.0
6. Execute the below command from the command prompt
.\bin\windows\kafka-server-start.bat .\config\server.properties


7. Once everything fine then kafka server will start and display image as mentioned below




How to Create topics

1. Open command prompt and go to C:\spark\kafka_2.10-0.10.0.0\bin\windows
2. Copy the below command and hit enter
kafka-topics.bat --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic kafkatest
         

How to create producer
1. Open command prompt and go to C:\spark\kafka_2.10-0.10.0.0\bin\windows
2. Copy the below command and hit enter
kafka-console-producer.bat –broker-list localhost:9092 --topic kafkatest 

How to create consumer
1. Open command prompt and go to C:\spark\kafka_2.10-0.10.0.0\bin\windows
2. Copy the below command and hit enter
kafka-console-consumer.bat --zookeeper localhost:2181 --topic kafkatest
        

Once Producer and consumer started then, we can start to post messages from producer and reflect in consumer.
How to replicate data from producer to consumer
1. Try to enter some data in producer window, the same data will be replicates in consumer window.


More useful commands


1. Listing all topics which we have created
-
kafka-topics.bat --list --zookeeper localhost:2181
2. describe about particular topic
-
kafka-topics.bat --list --zookeeper localhost:2181 
3. Read all messages from particular topic
-
kafka-console-consumer.bat --zookeeper localhost:2181 --topic kafkatest --from-beginning 


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