:original_name: mrs_03_1197.html

.. _mrs_03_1197:

How Do I Do If Error Message "Not Authorized to access group xxx" Is Displayed When a Kafka Topic Is Consumed?
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This issue is caused by the conflict between the Ranger authentication and ACL authentication of a cluster. If a Kafka cluster uses ACL for permission access control and Ranger authentication is enabled for the Kafka component, all authentications of the component are managed by Ranger. The permissions set by the original authentication plug-in are invalid. As a result, ACL authorization does not take effect. You can disable Ranger authentication of Kafka and restart the Kafka service to rectify the fault. The procedure is as follows:

#. Log in to FusionInsight Manager and choose **Cluster** > **Services** > **Kafka**.
#. In the upper right corner of the **Dashboard** page, click **More** and choose **Disable Ranger**. In the displayed dialog box, enter the password and click **OK**. After the operation is successful, click **Finish**.
#. In the upper right corner of the **Dashboard** page, click **More** and choose **Restart Service** to restart the Kafka service.
