Create an alert rule for a NAS resource-File Storage NAS(NAS)-阿里云帮助中心

Create alert rules to monitor the usage of your File Storage NAS resources. If a metric for a resource meets the alert condition, Cloud Monitor automatically sends an alert notification. This helps you promptly identify and address abnormal monitoring data.

Prerequisites

A File Storage NAS file system has been created. For more information, see Create a file system.
The Cloud Monitor service has been activated.

Log on to the Cloud Monitor product page and follow the on-screen instructions to activate the service.

Procedure

Log on to the Cloud Monitor console.
In the navigation pane on the left, choose Alerts, and then click Create Alert Rule.

In the Create Alert Rule panel, configure the following parameters.

Configure the basic parameters as follows.

Configuration Item	Description
Product	Select File Storage NAS.
Resource Scope	The scope of resources to which the alert rule applies. Valid values: All Resources: The alert rule applies to all NAS resources. Note Currently, NAS and CPFS share the Cloud Monitor console. If you select All Resources, CPFS resources are included. Application Group: The alert rule applies to all resources in a specified application group for NAS. Instance: The alert rule applies to a specified NAS resource.
Associated resources	When the resource scope is set to application group or instance, select the required associated resource from the drop-down list.
Rule Description	The main body of the alert rule. The rule is triggered when monitoring data meets the alert conditions. Set the rule description as follows: Click Add Rule. In the Set Rule Description panel, enter a Rule Name and set the rule conditions. Simple Metric: Select a metric, and then set a threshold and an alert level for it. Composite Metric: Select an alert level, and then set alert conditions for two or more metrics. Expression: Select an alert level, and then set the alert conditions. For more information about how to set complex alert conditions, see Alert rule expressions. Smart Threshold: For more information about smart thresholds, see Overview and Create a smart threshold-based alert rule. Click OK. Note For more information about the metrics supported by NAS, see Metrics.
Mute Period	The interval at which alert notifications are resent if an alert is not resolved. Valid values: 5 minutes, 15 minutes, 30 minutes, 60 minutes, 3 hours, 6 hours, 12 hours, and 24 hours. An alert is sent when a metric reaches its threshold. If the metric continues to exceed the threshold within the mute period, no additional alert notifications are sent during this period. If the metric has not returned to normal after the mute period, Cloud Monitor sends another alert notification. For example, if you set Mute Period to 12 hours, Cloud Monitor resends the alert notification after 12 hours if the alert is not resolved.
Effective Period	The period during which the alert rule is active. The rule only checks monitoring data for alerts during this time.
Alert Contact Group	The contact group that receives alert notifications. Alert notifications for an application group are sent to the alert contacts in this group. An alert contact group is a set of one or more alert contacts. For more information about how to create alert contacts and alert contact groups, see Create an alert contact or an alert contact group.
Tag	The tags of the alert rule. A tag consists of a key and a value. Note You can add a maximum of 6 tags.

(Optional) Click Advanced Settings and configure the following parameters.

Configuration Item	Description
Alert Callback	A publicly accessible URL that receives alert data from Cloud Monitor via HTTP POST requests. Only HTTP is supported. Use threshold-based alert callbacks. To test connectivity to the callback URL: Click Test, located directly to the right of the callback URL. In the WebHook Test panel, check the HTTP status code and test result details to verify connectivity. Note You can also set the Test Template Type: and Language:. Then click Test again to view updated test results. Click Close.
Auto Scaling	If you enable Auto Scaling, Cloud Monitor triggers the associated scaling rule when an alert occurs. You must specify the Region, ESS Group, and ESS Rule. Configure a scaling group. Configure a scaling rule.
Simple Log Service	If you enable Simple Log Service, Cloud Monitor sends alert data to a Logstore in Simple Log Service (SLS) when an alert occurs. You must specify the Region, ProjectName, and Logstore. Collect and analyze ECS text logs using LoongCollector.
Simple Message Queue (formerly MNS) - Topic	If you turn on the Simple Message Queue (formerly MNS) - Topic switch, alert information is sent to an MNS topic when an alert occurs. You must set the region and topic for MNS. Create a topic.
Function Compute	If you enable Function Compute, Cloud Monitor sends alert notifications to Function Compute (FC) for custom formatting when an alert occurs. You must specify the region, service, and function. For more information about how to set up a service and a function, see Create a function application in the console.
NoDataPolicy	The method for handling alarms for monitoring data. The valid values are: Do not do anything (default) Send alert notifications Treated as normal

Click OK to save the alert rule.

When a file system metric exceeds the specified threshold, an alert notification is automatically sent. This ensures that you are promptly notified of abnormal monitoring data.

Alert rule configuration examples

The following examples describe how to configure alert rules for NAS instances, all resources, or application groups. This helps you promptly identify and address abnormal monitoring data. For more information about the metrics supported by NAS, see Metrics.

Configure simple metric monitoring

For example, you can configure an alert rule to trigger a Warning-level alert when the read latency of a General-purpose file system exceeds 5 ms for three consecutive detection periods. The recommended settings for Resource Scope and Rule Description are as follows. For more information about other parameters, see Step 3.

Resource Scope: Instance.
Associated Instance: Select a General-purpose file system ID, such as 2973ef4xxxx. In the Associated Instance area, select File Storage NAS for Product, click + Add Instance, and then add the target file system instance to the list.

Rule Description

Parameter	Example Value
Metric Type	Simple Metric
Monitoring Metric	Read Latency
Threshold and Alert Level	Warning level: Warning Period: 3 consecutive periods (1 period = 1 minute) Monitored value: >= Threshold: 5

Configure composite metric monitoring

For example, you can configure an alert rule to trigger a Critical-level alert if, within one detection period, the read/write latency of a file system exceeds 5 ms, or the storage usage of the IA storage class increases by 40% compared with the same time the previous day. The recommended settings for Resource Scope and Rule Description are as follows.

Resource Scope: Instance
Associated Instance: Select a General-purpose file system ID, such as 2973ef4xxxx.

Rule Description: For the Read Latency and Write Latency metrics, set the condition to `Monitored value >= 5 ms`. Set the notification method to Phone + Text Message + Email + WebHook.

Parameter	Example Value
Metric Type	Composite Metric
Alert Level	Critical
Multi-metric Alert Description	Click Add Metric. In the Monitoring Metric drop-down list, select . Select the monitored value. In this example, select increase compared to the same time yesterday. Set the threshold. In this example, the value is 40. Then, follow the preceding steps to set the and metrics. Note For more information about how to set complex alert conditions, see Alert rule expressions.
Multi-metric Relationship	An alert is triggered if any condition is met (\|\|)
Number of times the threshold is exceeded	1 consecutive period

References

For more information about how to configure an alert rule that is triggered based on the calculation results of multiple metrics, see Configure an advanced alert rule.
For more information about how to create a smart threshold-based alert rule, see Create a smart threshold-based alert rule.
For more information about how to view alerting resources, see View alerting resources.
For more information about how to modify an alert rule, see Modify an alert rule.
For more information about how to merge alert notifications from different alert rules, see Merge alert notifications.