Table of Contents

1. Challenge

   Install the Confluent Community Package on the Broker Nodes

   1. On all three nodes, add the GNU Privacy Guard (GPG) key plus package repository, and then install Confluent Community, plus Java. The format should look like this:

   wget -qO - https://packages.confluent.io/deb/5.2/archive.key | sudo apt-key add -
   
   sudo add-apt-repository "deb [arch=amd64] https://packages.confluent.io/deb/5.2 stable main"
   
   sudo apt-get update && sudo apt-get install -y openjdk-8-jre-headless confluent-community-2.12
   

2. Challenge

   Configure Zookeeper

   1. On all three nodes, edit the hosts file:

   sudo vi /etc/hosts
   

   1. Add the following entries to the hosts file:

   10.0.1.101 zoo1
   10.0.1.102 zoo2
   10.0.1.103 zoo3
   

   1. Edit the zookeeper config file:

   sudo vi /etc/kafka/zookeeper.properties
   

   1. Delete the contents of the config file and add the following:

   tickTime=2000
   dataDir=/var/lib/zookeeper/
   clientPort=2181
   initLimit=5
   syncLimit=2
   server.1=zoo1:2888:3888
   server.2=zoo2:2888:3888
   server.3=zoo3:2888:3888
   autopurge.snapRetainCount=3
   autopurge.purgeInterval=24
   

   1. Set up the zookeeper ID for each server:

   sudo vi /var/lib/zookeeper/myid
   

   1. On each server, set the contents of /var/lib/zookeeper/myid to the server's ID. On Node 1, enter 1, on Node 2, enter 2, and lastly on Node 3, enter 3:

   <server id 1, 2, or 3>
   

3. Challenge

   Configure Kafka

   1. Edit the kafka config file:

   sudo vi /etc/kafka/server.properties
   

   1. Edit the broker.id and zookeeper.connect in the config file. Set the broker ID to the appropriate ID for each server (1 on Node 1, 2 on Node 2, and so on).

   2. Set zookeeper.connect to zoo1:2181:

   broker.id=<server id 1, 2, or 3>
   ...
   zookeeper.connect=zoo1:2181
   

4. Challenge

   Start Zookeeper and Kafka

   1. Start and enable the Zookeeper and Kafka services:

   sudo systemctl start confluent-zookeeper
   sudo systemctl enable confluent-zookeeper
   sudo systemctl start confluent-kafka
   sudo systemctl enable confluent-kafka
   

   1. Both services should be active (running) on all three servers. Check the services to make sure they are running:

   sudo systemctl status confluent*
   

   1. We can test our cluster by listing the current topics:

   kafka-topics --list --bootstrap-server localhost:9092
   

   The output should look like this:

   _confluent.support.metrics