Alert rules that are based on deprecated or changed metrics become invalid and are no longer suitable for service monitoring. You need to periodically detect and clean up these rules to maintain effective monitoring.
Alert rules become invalid when their corresponding metrics are adjusted or deprecated. You can handle invalid rules in the following ways:
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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.
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Batch delete invalid alert rules
Delete all detected invalid alert rules at once.
Because metric lifecycles vary across cloud services, we recommend that you periodically check for and delete invalid alert rules.