After you change the cluster or namespace of an application, some monitoring data in Application Real-Time Monitoring Service (ARMS) may display incorrectly. ARMS records container-related parameters such as Namespace and ClusterId at application creation time and does not update them automatically.
Symptoms
You may notice one or both of the following issues:
The namespace column on a custom dashboard still shows the old value. The dashboard displays the previous namespace after the change.
Container monitoring metrics are missing, but RED metrics display normally. Rate, errors, and duration (RED) metrics work as expected, while container-level metrics such as CPU and memory show no data.
Possible cause
When you create an application in ARMS, the system stores container-related parameters, including Namespace and ClusterId, as static values. These values cannot be automatically updated.
If you change the cluster or namespace of your application, the container-related data may fail to be queried or displayed.
Solutions
Option 1: Delete and recreate the application
This method causes the loss of historical monitoring data. If you need to retain historical data, use Option 2 instead.
Delete the application from ARMS. For more information, see Delete applications.
Recreate the application in the new cluster or namespace.
Report monitoring data again.
Option 2: Submit a ticket
Submit a ticket to contact Alibaba Cloud technical support for assistance.