# License Configurations for Confluent Platform To manage Confluent Platform component licenses, set the `confluent.license` property and optional license-topic properties on each component. By default, Confluent Platform components use the `_confluent-command` topic to store license information. To configure licenses, see [Configure component licenses](../license.md#cp-configure-license). ## Kafka brokers | Name | Description | Type | Default | Valid Values | Edge Cases | |------------------------------------------------|-------------------------------------------------------|---------|----------------------|-----------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `confluent.license` | The license string for the Kafka broker | String | N/A | Valid Confluent Platform license string | N/A | | `confluent.license.topic` | Topic name for storing license information | String | `_confluent-command` | Any valid Kafka topic name | Custom topics aren’t automatically created. You must manually create custom topics before startup.

If the `_confluent-license` topic exists, the default changes to `_confluent-license`
instead of `_confluent-command` | | `confluent.license.topic.replication.factor` | Replication factor for the license topic | Integer | N/A | N/A | Only works with default topic `_confluent-command` | | `confluent.license.topic.retry.backoff.min.ms` | Minimum time to wait before retrying topic operations | Long | N/A | N/A | Only works with default topic `_confluent-command` | | `confluent.license.topic.retry.backoff.max.ms` | Maximum time to wait before retrying topic operations | Long | N/A | N/A | Only works with default topic `_confluent-command` | | `confluent.license.topic.create.timeout.ms` | Timeout for creating the license topic | Long | N/A | N/A | Only works with default topic `_confluent-command` | ## Confluent Schema Registry | Name | Description | Type | Default | Valid Values | Edge Cases | |----------------------------------------------|--------------------------------------------|---------|----------------------|-----------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `confluent.license` | The license string for Schema Registry | String | N/A | Valid Confluent Platform license string | N/A | | `confluent.license.topic` | Topic name for storing license information | String | `_confluent-command` | Any valid Kafka topic name | Custom topics aren’t automatically created. You must manually create custom topics before startup.

If the `_confluent-license` topic exists, the default changes to `_confluent-license`
instead of `_confluent-command` | | `confluent.license.admin.replication.factor` | Replication factor for the license topic | Integer | N/A | N/A | Only works with default topic `_confluent-command` | ## Kafka Connect | Name | Description | Type | Default | Valid Values | Edge Cases | |--------------------------------------|--------------------------------------------|---------|----------------------|-----------------------------------------|----------------------------------------------------------------------------------------------------| | `confluent.license` | The license string for Connect | String | N/A | Valid Confluent Platform license string | N/A | | `confluent.topic` | Topic name for storing license information | String | `_confluent-command` | Any valid Kafka topic name | Custom topics aren’t automatically created. You must manually create custom topics before startup. | | `confluent.topic.replication.factor` | Replication factor for the license topic | Integer | N/A | N/A | Only works with default topic `_confluent-command` | ## Confluent Replicator | Name | Description | Type | Default | Valid Values | Edge Cases | |--------------------------------------|--------------------------------------------|---------|----------------------|-----------------------------------------|----------------------------------------------------------------------------------------------------| | `confluent.license` | The license string for Replicator | String | N/A | Valid Confluent Platform license string | N/A | | `confluent.topic` | Topic name for storing license information | String | `_confluent-command` | Any valid Kafka topic name | Custom topics aren’t automatically created. You must manually create custom topics before startup. | | `confluent.topic.replication.factor` | Replication factor for the license topic | Integer | N/A | N/A | Only works with default topic `_confluent-command` | ## Confluent Control Center ### Confluent Control Center Next Gen 2.3.0 and later | Name | Description | Type | Default | Valid Values | Edge Cases | |------------------------------------------------------|-----------------------------------------------------------------------------------|---------|----------------------|-----------------------------------------|--------------| | `confluent.license` | The license string for Confluent Control Center | String | N/A | Valid Confluent Platform license string | N/A | | `confluent.controlcenter.command.topic` | Topic name where Confluent Control Center stores commands and license information | String | `_confluent-command` | Any valid Kafka topic name | N/A | | `confluent.controlcenter.command.topic.replication` | Replication factor for the command topic | Integer | N/A | N/A | N/A | | `confluent.controlcenter.command.topic.retention.ms` | Retention period for the command topic in milliseconds | Long | N/A | N/A | N/A | ### Confluent Control Center versions before Next Gen 2.3.0 | Name | Description | Type | Default | Valid Values | Edge Cases | |------------------------------------------------------|-----------------------------------------------------------------------------------|---------|----------------------|-----------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `confluent.license` | The license string for Confluent Control Center | String | N/A | Valid Confluent Platform license string | N/A | | `confluent.controlcenter.command.topic` | Topic name where Confluent Control Center stores commands and license information | String | `_confluent-command` | Any valid Kafka topic name | If the topic name is `_confluent-command`, Control Center creates the topic with default
retention and ignores the `retention.ms` configuration.

If the topic name is custom, Control Center publishes alert metadata to the custom topic but
publishes the license to `_confluent-command`. After restart, both use the custom topic,
and the license published through the UI is lost. | | `confluent.controlcenter.command.topic.replication` | Replication factor for the command topic | Integer | N/A | N/A | N/A | | `confluent.controlcenter.command.topic.retention.ms` | Retention period for the command topic in milliseconds | Long | N/A | N/A | Ignored when the topic name is `_confluent-command`. The topic is created with default retention. | ## Related content * [Configure component licenses](../license.md#cp-configure-license) * [Manage Confluent Platform Licenses Using Control Center](/control-center/current/installation/license.html)