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.

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 _.:/=+-@

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.

DMS for RocketMQ instances in different regions cannot communicate with each other over an intranet. Select a nearest location for low latency and fast access.
Click and choose Application > 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/Edit 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 OK.
  - Click Create/Edit Tag. In the dialog box that is displayed, click next to the tag to be deleted and click OK.
    You can delete up to 19 tags in this way.
  - To delete tags in batches, select the tags and click Delete in the upper left corner. Click OK.