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  2. Cloud Eye
  3. User Guide
  4. Using the Alarm Function
  5. Creating Alarm Notification Topics
  6. Creating a Topic

Creating a Topic


A topic is a specific type of event in which messages are published and to which end users subscribe for notifications. It serves as a message sending channel, where publishers and subscribers can interact with each other.

In this section, you can create a topic that belongs to you.

Creating a Topic

  1. Log in to the management console.
  2. Click in the upper left to select a region and a project.
  3. Under Application, select Simple Message Notification.

    The SMN console is displayed.

  4. In the navigation pane, choose Topics.

    The Topics page is displayed.

  5. Click Create Topic.

    The Create Topic dialog box is displayed.

    Figure 1 Create Topic
  6. Enter a topic name and display name (topic description).
    Table 1 Parameters required for creating a topic



    Topic Name

    Specifies the topic name, which

    • contains only upper or lower case letters, digits, hyphens (-), and underscores (_) and must start with a letter or a digit.
    • Is a string of 1 to 255 characters.
    • must be unique and cannot be modified once the topic is created.

    Display Name

    Specifies the message sender name, which must be less than 192 bytes.


    After you specify a display name, the sender in email messages will be presented as Display name<username@example.com>. Otherwise, the sender will be username@example.com.


    Tags identify cloud resources so that they can be categorized easily and searched quickly.

    • You can enter a maximum of 36 and 43 characters for Key and Value, respectively. Both Key and Value cannot start or end with a space and cannot contain any of the following characters: is equal to (=), asterisk (*), is less than (<), is greater than (>), backslash (\), comma (,), delimiter (|), and slash (/).
    • Each topic supports up to 10 tags.
  7. Click OK.

    The topic you created is displayed in the topic list.

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

  8. Click a topic name to view the topic details and the total number of topic subscriptions.