Deleting a Kafka Topic

Prerequisites

• A Kafka instance has been created, and a topic has been created in this instance.
• The instance is in the Running state.

Constraint

If your Kafka instances are connected using Logstash, stop Logstash before deleting topics. Otherwise, services may crash.

Deleting a Kafka Topic (Console)

1. Log in to the console.
2. Click in the upper left corner to select a region.
   

   Select the region where your Kafka instance is located.

3. Click and choose Application > Distributed Message Service (for Kafka) to open the console of DMS for Kafka.
4. Click the desired Kafka instance to view the instance details.
5. In the navigation pane, choose Topics.
6. Delete topics using either of the following methods:
   • Select one or more topics and click Delete Topic in the upper left corner.
   • In the row containing the topic you want to delete, choose More > Delete.

7. In the Delete Topic dialog box that is displayed, click OK to delete the topic.

Deleting a Kafka Topic on the Client

If your Kafka client version is later than 2.2, you can use kafka-topics.sh to delete topics.

For an instance with SASL enabled, if allow.everyone.if.no.acl.found is set to false, topics cannot be deleted through the client.

• For a Kafka instance with SASL disabled, run the following command in the /bin directory of the Kafka client:

  ./kafka-topics.sh --bootstrap-server ${connection-address} --delete --topic ${topic-name}

  Parameter description:

  • connection-address: can be obtained from the Connection area on the Basic Information page on the Kafka console.
  • topic-name: topic name.

  Example:

  [root@ecs-kafka bin]# ./kafka-topics.sh --bootstrap-server 192.168.xx.xx:9092,192.168.xx.xx:9092,192.168.xx.xx:9092 --delete --topic topic-01
  [root@ecs-kafka bin]#

• For a Kafka instance with SASL enabled, do as follows:
  1. (Optional) If the SSL certificate has been configured, skip this step and go to 2. Otherwise, do as follows:

     Create the ssl-user-config.properties file in the /config directory of the Kafka client and add the SSL certificate configurations by referring to 3.

  2. Run the following command in the /bin directory of the Kafka client:

     ./kafka-topics.sh --bootstrap-server ${connection-address} --delete --topic ${topic-name} --command-config ../config/ssl-user-config.properties

     Parameter description:

     • connection-address: can be obtained from the Connection area on the Basic Information page on the Kafka console.
     • topic-name: topic name.

     Example:

     [root@ecs-kafka bin]# ./kafka-topics.sh --bootstrap-server 192.168.xx.xx:9093,192.168.xx.xx:9093,192.168.xx.xx:9093 --delete --topic topic-01 --command-config ../config/ssl-user-config.properties
     [root@ecs-kafka bin]#