Create a namespace in Hermes

Organize your Kafka topics by creating a namespace.

始める前に

Role required: hermes_admin or kafka_namespace_admin

このタスクについて

Use namespaces to organize Kafka topics in logical ways. For example:

• Create namespace records for each Kafka cluster that replicates messages to Hermes.
• Create namespace records for each domain in a domain-separated instance. For more information, see Hermes Messaging Service domain separation.

手順

1. Navigate to All > Hermes Messaging Service > Namespaces.
2. Select New.
3. On the form, fill in the fields.

   表 : 1. Kafka namespace form

   Field	Description
   Name	Name of the namespace.
   Topic Prefix	Prefix assigned to all topics in this namespace. Topics are assigned to namespaces based on the topic prefix. A scheduled job checks for new topics in Hermes. When it finds one, it creates a topic record and links the topic to the namespace. 警告: To avoid conflicts between the app ID and the namespace that could result in unexpected behavior, don't specify a topic prefix beginning with sn_ when creating a namespace record.
   Allowed Application Scopes	List of application scopes that have access to this namespace.

4. Select Submit.

タスクの結果

A namespace record is created in the Kafka Namespace [sys_kafka_namespace] table. Topics created in or replicated to Hermes are assigned to the namespace based on the topic prefix.

次のタスク

• Organize topics yourself by creating one or more topic records and linking them to this namespace. See Create a topic in Hermes.
• Manage access to Kafka topics in the Hermes Kafka cluster by configuring Access Control Lists (ACLs) for this namespace in the certificate generator. See Set up a secure connection to the Hermes Messaging Service.