Creating a Topic

Creating a Topic

1. Log in to the SMN console.
2. In the navigation pane, choose Topic Management > Topics.

   The Topics page is displayed.

3. Click Create Topic.

   The Create Topic dialog box is displayed.

   Figure 1 Creating a topic
   
4. Enter a topic name and display name (topic description).

   Table 1 Parameters required for creating a topic

   Parameter	Description
   Topic Name	Specifies the topic name, which Contains only letters, digits, hyphens (-), and underscores (_) and must start with a letter or a digit. Must contain 1 to 255 characters. Must be unique and cannot be modified after the topic is created.
   Display Name	Specifies the message sender name, which must be 192 characters or less. NOTE: After you specify a display name, the sender will be presented in Display name<username@example.com> format, or the sender will be <username@example.com>.
   Enterprise Project	Centrally manages cloud resources and members by project.
   CTS Log	Specifies whether to enable CTS log.
   Log Group	Select a log group. A log group is a group of log streams which share the same log retention settings. For details, see Log Groups.
   Log Stream	Select a log stream in the specified log group. A log stream is the basic unit for reading and writing logs. Sorting logs into different log streams makes it easier to find specific logs when you need them. For details, see Log Streams.
   Tag	Tags identify cloud resources so that you can categorize and search for your resources easily and quickly. For each resource, each tag key must be unique, and can have only one tag value. A tag key can contain a maximum of 36 characters. It can only include digits, letters, underscores (_), and hyphens (-). A tag value can contain a maximum of 43 characters, including digits, letters, underscores (_), periods (.), and hyphens (-). You can add a maximum of 20 tags to a topic.

5. Click OK.

   The topic you created is displayed in the topic list.

   After you create a topic, the system generates a uniform resource name (URN) for the topic, which uniquely identifies the topic and cannot be changed.

6. Click the name of the topic you created to view the topic its details.

Follow-up Operations

After you create a topic, add subscriptions to the topic by referring to add subscriptions. After the subscriptions have been confirmed, alarm notifications will be sent to the subscription endpoints via SMN.