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Replicating Data Between Two Kafka Clusters

Kafka can be deployed in mutliple data centers in an "Active-Active", "Active-Passive", or centralized architecture. In this hands-on lab, we simulate an active-passive architecture in which data from one cluster is replicated to another cluster using a tool called Replicator. Replicator, like MirrorMaker, allows you to preserve topic configuration in the source cluster while replicating the messages from one cluster to another.

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Path Info

Level
Clock icon Intermediate
Duration
Clock icon 1h 45m
Published
Clock icon Jul 17, 2019

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Table of Contents

  1. Challenge

    Start the Destination Cluster

    Note: After connecting via ssh, please give the lab extra time to finish provisioning. If you get a dpkg frontend lock message when running sudo apt install -y default-jdk, please give the lab more time before retrying the command.

    Start Zookeeper.

    bin/zookeeper-server-start etc/kafka/zookeeper.properties

    Start Kafka.

    bin/kafka-server-start etc/kafka/server.properties

  2. Challenge

    Start the Origin Cluster

    Make a copy of the configuration files.

    cp etc/kafka/zookeeper.properties /tmp/zookeeper_origin.properties
cp etc/kafka/server.properties /tmp/server_origin.properties

    Change the port numbers for the origin cluster.

    sed -i -e "s/2181/2171/g" /tmp/zookeeper_origin.properties
sed -i -e "s/9092/9082/g" /tmp/server_origin.properties
sed -i -e "s/2181/2171/g" /tmp/server_origin.properties
sed -i -e "s/#listen/listen/g" /tmp/server_origin.properties

    Change the data directory for the origin cluster.

    sed -i -e "s/zookeeper/zookeeper_origin/g" /tmp/zookeeper_origin.properties
sed -i -e "s/kafka-logs/kafka-logs-origin/g" /tmp/server_origin.properties

    Start Zookeeper.

    bin/zookeeper-server-start /tmp/zookeeper_origin.properties

    Start Kafka.

    bin/kafka-server-start /tmp/server_origin.properties

  3. Challenge

    Create a Topic in the Source Cluster

    Create a topic named test-topic with 1 partition and a replication factor of 1.

    bin/kafka-topics --create --topic test-topic --replication-factor 1 --partitions 1 --zookeeper localhost:2171

  4. Challenge

    Run the Replicator Tool

    Run Kafka Connect in Standalone Mode and pass in the quickstart-replicator.properties file

    bin/connect-standalone etc/kafka/connect-standalone.properties etc/kafka-connect-replicator/quickstart-replicator.properties

  5. Challenge

    Produce and Verify Replication

    Verify that the topic was replicated to the destination cluster.

    bin/kafka-topics --describe --topic test-topic.replica --zookeeper localhost:2181

    Open a Console Producer and write to the topic test-topic in the source cluster.

    seq 10000 | bin/kafka-console-producer --topic test-topic --broker-list localhost:9082

    Confirm the messages were replicated by opening a console consumer to the destination cluster.

    bin/kafka-console-consumer --from-beginning --topic test-topic.replica --bootstrap-server localhost:9092
A Cloud Guru - Labs - Replicating Data Between Two Kafka Clusters
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A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

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