FAQ for Confluent Cloud Kafka Clusters

Find answers to frequently asked questions about Confluent Kafka Clusters.

Can I switch between Confluent Cloud cluster types?

You can upgrade a Basic cluster to single-zone Standard cluster. No other changes to cluster type (including downgrading a Standard cluster to Basic) are supported. For more information on cluster types, see Kafka Cluster Types in Confluent Cloud.

Which Kafka clusters are multi-tenant?

Only Dedicated Kafka clusters are single-tenant. All other Confluent Cloud Kafka clusters are multi-tenant.

Are there topic or partition limits?

Yes, these are described in Kafka Cluster Types in Confluent Cloud. If you try to create more partitions than you are allowed, you will see this error:

"You may not create more than the maximum number of partitions"

What cloud providers and regions are supported?

For a list of the cloud providers, regions, and zones supported by Confluent Cloud, see Cloud Providers and Regions for Confluent Cloud.

How do I view cluster details with Cloud Console?

On the navigation menu, choose Cluster Overview > Cluster Settings to access the Cluster settings page. You can view the cloud type, provider, region, and zone availability details, and delete a cluster from the General tab of this page.

Hover on the Cluster ID, Bootstrap server, or REST endpoint properties to access a copy-to-clipboard button for your convenience. Paste these details when you are configuring, running commands, or troubleshooting your cluster.

Confluent Cloud Cluster Settings

For more information, see How to work with Kafka clusters.

How do I change a cluster name with Cloud Console?

The General tab of the Cluster settings page enables you to edit the cluster name.

  1. On the Cluster settings page, make sure the General tab is selected, and click the Edit icon.

    Confluent Cloud Change Settings

  2. Edit the cluster name in Cluster name field and click Save changes.

    Edit cluster name

For more information, see How to work with Kafka clusters.

How do I delete a cluster with Cloud Console?

The Cluster settings page enables you to delete a cluster.

  1. From the Cluster settings, make sure the General tab is selected, and click Delete cluster.

    Confluent Cloud Change Settings Delete Cluster

    You are prompted to confirm the deletion.

    Confirm cloud cluster deletion

For more information, see How to work with Kafka clusters.

How do I create keys for a cluster with Cloud Console?

To create and delete API keys for cluster resources, navigate to Cluster Overview and choose API keys. Select a key to edit its description. For more information, see Use API Keys to Authenticate to Confluent Cloud.

Confluent Cloud Cluster Settings

Why do I see the same bootstrap server for different clusters?

In the Cloud Console, you may see the same bootstrap server for different clusters. This is working as designed; it occurs because Confluent Cloud clusters are multi-tenant.

Why do I get a “cluster not found” error when using my API key?

This usually means the API key is not associated with the cluster you are trying to access or that the CLI is configured to use a different cluster. Check the key-cluster binding and consider regenerating the API key with the correct scope. For more information, see Connect Confluent CLI to Confluent Cloud Cluster.

What does “out of sync replica” warning mean in Confluent Cloud?

It means one or more replicas are lagging behind the leader. This typically self-heals, but you can monitor replica lag through the Cloud Console.