Kafka Authorization Using ACLs

30 minutes
  • 2 Learning Objectives

About this Hands-on Lab

Kafka provides the ability to exercise granular control over access to objects and operations within the cluster through the use of ACLs. In this hands-on lab, you will have the opportunity to work with ACLs in Kafka by making some changes to an existing cluster in order to provide access to a new user. This will give you a hands-on introduction to the use of ACLs to manage authorization in Kafka.

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

Add an ACL to Give `kafkauser` Read and Write Access to the `inventory_purchases` Topic
  1. Create the ACL.

    kafka-acls --authorizer-properties zookeeper.connect=localhost:2181 --add --allow-principal User:kafkauser --operation read --operation write --topic inventory_purchases
  2. Verify that the read access works by consuming from the topic.

    kafka-console-consumer --bootstrap-server zoo1:9093 --topic inventory_purchases --from-beginning --consumer.config client-ssl.properties
  3. Verify that the write access works by writing data to the topic.

    kafka-console-producer --broker-list zoo1:9093 --topic inventory_purchases --producer.config client-ssl.properties
Remove All Existing ACLs for the `member_signups` Topic
  1. List the ACLs for the topic.

    kafka-acls --authorizer-properties zookeeper.connect=localhost:2181 --topic member_signups --list
  2. Remove the existing ACL for the topic.

    kafka-acls --authorizer-properties zookeeper.connect=localhost:2181 --topic member_signups --remove
  3. Verify that you can read from the topic as kafkauser.

    kafka-console-consumer --bootstrap-server zoo1:9093 --topic member_signups --from-beginning --consumer.config client-ssl.properties

Additional Resources

Your supermarket company is using client authentication and ACLs in order to manage access to a Kafka cluster. They have ACLs configured for some existing topics but due to new requirements, some changes need to be made in order to allow access for a new client user called kafkauser. Note that allow.everyone.if.no.acl.found is set to true for this cluster.

Implement the following authorization changes to the cluster:

  • Provide kafkauser with read and write access to the inventory_purchases topic
  • Remove all existing ACLs for the member_signups topic to allow access to all users, including kafkauser

There is a client configuration file on the server located at /home/cloud_user/client-ssl.properties. This configuration will allow you to authenticate as kafkauser.

If you get stuck, feel free to check out the solution video, or the detailed instructions under each objective. Good luck!

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