If you configured an alert rule for an ApsaraMQ for Kafka instance but the Status column in the Alert Rules Associated with Resource panel displays No data, the monitoring system is not receiving metric data from the instance.
Possible cause
The minor version of your ApsaraMQ for Kafka instance is outdated. Older minor versions may not report certain metrics to CloudMonitor, which prevents alert rules from evaluating and causes the No data status.
Note: If the minor version is already up to date and the Status still shows No data, the issue may have a different root cause. Contact Alibaba Cloud technical support.
Solution
Step 1: Verify that a minor version update is available
Log on to the ApsaraMQ for Kafka console.
In the Resource Distribution section of the Overview page, select the region where your instance resides.
On the Instances page, click the name of the instance.
On the Instance Details page, click the Instance Information tab.
In the Basic Information section, check whether Minor Version Update is available next to the Minor Version field.
Step 2: Update the minor version
In the Basic Information section of the Instance Information tab, click Minor Version Update next to the Minor Version field.
In the panel that appears:
Read the Read Before Upgrade section.
Enter your name in the Emergency Contact field.
Enter your phone number in the Emergency Contact Number field.
Enter the upgrade time in the Started At field.
Click OK.
Result
After the minor version update completes, check the Status column in the Alert Rules Associated with Resource panel. The value changes from No data to a valid state such as OK or Alert.