While cloud services are being continuously updated and iterated, metrics that are closely related to the services are also being updated. The statistical methods of some metrics have been changed, and a small number of metrics have been deprecated as cloud services develop. Alert rules created based on such metrics have also become invalid. Such alert rules are no longer suitable for service monitoring and require attention and governance.
Some detected alert rules become invalid for alerting due to the adjustment or deprecation of the corresponding metrics. You can use the following methods for governance:
Selectively delete invalid alert rules
Confirm invalid alert rules one by one and manually delete them. For more information, see Delete one or more alert rules.
Batch delete invalid alert rules
Delete all the detected invalid alert rules at a time.
The lifecycles of metrics vary among cloud services. We recommend that you periodically detect alert rules and delete invalid alert rules in a timely manner.