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Object Storage Service:Use the alert service

Last Updated:May 08, 2026

You can create alert rules to monitor your OSS resources. When a metric meets the alert conditions, CloudMonitor automatically sends a notification so you can resolve issues promptly.

Create an alert rule

  1. Log on to the Cloud Monitor console.

  2. In the left-side navigation pane, choose Alerts > alert rules.

  3. On the alert rules page, click Create Alert Rule.

  4. In the Create Alert Rule panel, configure the parameters for the alert rule.

    Parameter

    Description

    Product

    Select Object Storage Service.

    Resource range

    The resources to which the alert rule applies. Valid values:

    • All Resources: The alert rule applies to all OSS resources.

    • Application Groups: The alert rule applies to all resources in a specified application group.

    • Instances: The alert rule applies to specific OSS resources that you select.

    Rule description

    Defines the conditions that trigger an alert, such as the metric, threshold, and alert level.

    Mute For

    The period to wait before resending a notification for an unresolved alert. Valid values: 5 minutes, 15 minutes, 30 minutes, 60 minutes, 3 hours, 6 hours, 12 hours, and 24 hours.

    After an alert is triggered, no new notifications are sent during this period. If the alert condition persists after the period ends, CloudMonitor sends another notification.

    Effective Period

    The period during which the alert rule is active.

    Alert Contact Group

    Specifies the group to notify when an alert is triggered. To create a contact group, see Create an alert contact or an alert contact group.

    Tag

    The tag of the alert rule. A tag consists of a key and a value.

    Alert callback

    A publicly accessible URL to which CloudMonitor sends alert notifications via POST requests. Only the HTTP protocol is supported. For information about how to configure an alert callback, see Use a callback URL for a threshold-triggered alert.

    Auto Scaling

    Turn on the Auto Scaling switch. When an alarm is triggered, the corresponding scaling rule is triggered. For more information, see Configure a scaling group and Configure a scaling rule.

    Log Service

    Turn on the Log Service switch. When an alert is triggered, the alert information is sent to a Logstore in Log Service.

    Simple Message Queue (formerly MNS) - Topic

    Turn on the Simple Message Queue (formerly MNS) - Topic switch. When an alert is triggered, the alert information is written to a topic. For information about how to create a topic, see Create a topic.

    Function Compute

    Turn on the Function Compute switch. When an alert is triggered, the alert notification is sent to Function Compute for formatting. You must specify the region, service, and function in Function Compute.

    Insufficient data

    Specifies how to handle alerts when monitoring data is insufficient. Valid values:

    • Do not do anything (default)

    • Send alert notifications

    • Treated as normal

  5. Click Confirm.

Manage alert rules

You can perform the following operations on alert rules:

Actions

Description

Modify an alert rule

Update an alert rule's configuration if it no longer meets your needs.

Disable an alert rule

Disable an alert rule during maintenance or upgrades to prevent unnecessary notifications.

Enable an alert rule

Re-enable an alert rule after maintenance or upgrades are complete.

Delete an alert rule

Delete an alert rule that is no longer needed.

Important

Deleting a bucket does not automatically delete the alert rules associated with it. If you no longer need these alert rules, you must delete them manually.

View the alert history of an alert rule

View the history for an alert rule, including details and metric charts for affected resources.

Use a callback URL for a threshold-triggered alert

Use an alert callback to integrate alert notifications with your O&M or messaging systems.

Alert deduplication

Combines notifications when the same alert rule is triggered for multiple resources within a short period, reducing redundancy.