Configuring Tags for a RocketMQ Instance

Tags facilitate RocketMQ instance identification and management.

You can add tags to a RocketMQ instance when creating the instance or add tags on the Tags tab page of the created instance. Up to 20 tags can be added to an instance. Tags can be deleted.

If your organization has configured tag policies for DMS for RocketMQ, add tags to RocketMQ instances based on the tag policies. If a tag added on the Tags page does not comply with the tag policies, the tag fails to be added.

A tag consists of a tag key and a tag value. Table 1 lists the tag key and value requirements.

**Table 1** Tag key and value requirements
Parameter	Requirement
Tag key	Cannot be left blank. Must be unique for the same instance. Can contain 1 to 128 characters. Can contain letters, digits, spaces, and special characters _.:=+-@ Cannot start or end with a space. Cannot start with _sys_.
Tag value	Can contain 0 to 255 characters. Can contain letters, digits, spaces, and special characters _.:=+-@ Cannot start or end with a space in instance creation.

Prerequisite

A RocketMQ instance has been purchased.

Adding and Deleting Tags

Log in to the console.
Click in the upper left corner to select a region.

Select the region where your RocketMQ instance is located.
Click and choose Middleware > Distributed Message Service for RocketMQ to open the console of DMS for RocketMQ.
Click an instance name to go to the instance details page.
In the navigation pane on the left, choose Tags.

View the tags of the instance.
Perform the following operations as required:
- Add a tag
  1. Click Create/Delete Tag.
  2. Enter a tag key and a tag value, and click Add.
    If you have predefined tags, select a predefined pair of tag key and value, and click Add.
  3. Click OK.
- Delete a tag
  Delete a tag using either of the following methods:
  - In the row containing the tag to be deleted, click Delete. Click Yes.
  - Click Create/Delete Tag. In the dialog box that is displayed, click next to the tag to be deleted and click OK.