Quota Center:Create an alert rule for a quota item

Create a single alert rule

You can create a single alert rule for a general quota item of a cloud service.

In the following example, a quota alert rule for the maximum number of vCPUs of Elastic Compute Service (ECS) preemptible instances for a limited purchase (the quota is 512 vCPUs) is created. If the actual number of vCPUs of preemptible instances is greater than or equal to 80% of the quota, an alert notification is sent to the email addresses of the alert contacts in the alert contact group.

1. Log on to the Quota Center console.

2. In the left-side navigation pane, choose Products > General Quotas.

3. In the Elastic Compute section of the Products with General Quotas page, click Elastic Compute Service.

4. Click Create Alarm Rule in the Actions column of vCPUs Assigned to Limited Spot Instance.

   

5. On the Create Alarm Rule page, configure the parameters and click Confirm.

   Table 1 Parameters for creating an alert rule for a quota item

   Parameter	Description	Example
   Alarm Rule Name	The name of the alert rule.	Maximum number of vCPUs for preemptible instances for limited purchase
   Alarm Metric	The metric used by the alert rule. Valid values: Quotas Used Quotas Percentage of Used Quotas(%) Percentage of Available Quotas(%)	Percentage of Used Quotas(%)
   Threshold and Alert Level	The alert level and the threshold corresponding to this level. The following default notification methods are set for different alert levels: Critical: Email and Callback Warning: Email and Callback Info: Email and Callback You also need to select the number of times that the threshold is reached before an alert is triggered. Valid values: 1 Consecutive Cycle, 3 Consecutive Cycles, 5 Consecutive Cycles, 10 Consecutive Cycles, 15 Consecutive Cycles, 30 Consecutive Cycles, 60 Consecutive Cycles, 70 Consecutive Cycles, 90 Consecutive Cycles, 120 Consecutive Cycles, and 180 Consecutive Cycles. You can configure settings for different alert levels. This way, CloudMonitor generates alerts at a specific level based on the threshold corresponding to the level and sends alert notifications by using the specified methods.	Alert level: Info. The default notification method for this alert level is Email and Callback. Threshold: ≥ 80%.
   Mute For	The interval at which alert notifications are sent if the generated alert is not cleared. The value also indicates the silence period. Valid values: 5 minutes, 15 minutes, 30 minutes, 60 minutes, 3 hours, 6 hours, 12 hours, and 24 hours. An alert notification is sent when a metric reaches the alert threshold. During the silence period, if the metric repeatedly exceeds the alert threshold, no new alert notification is sent. After the silence period ends, if the metric does not return to the normal state, a new alert notification is sent. For example, if you set the Mute For parameter to 24 hours, CloudMonitor sends an alert notification for a generated alert, and the alert remains unresolved, CloudMonitor sends a new alert notification after 24 hours.	5 minutes
   Effective Time	The period during which the alert rule takes effect. The alert rule takes effect and generates alerts only at the specified time on the specified days of a week.	Cycle: Monday to Sunday Time: 00:00 to 23:59
   Alarm Contact Group	The contact group to which alert notifications are sent. Alert notifications for an application group are sent to the alert contact in the alert contact group. An alert contact group is a group of alert contacts, containing one or more alert contacts. For more information about how to create an alert contact or an alert contact group, see Create an alert contact or alert contact group.	Quota Administrators of ECS Instance Types
   Alarm Callback	The URL that is accessible over the Internet to receive the alert information pushed by CloudMonitor by using HTTP POST requests. Only the HTTP protocol is supported. To test the connectivity of the callback URL, perform the following operations: Click Test next to the callback URL. On the Test Result page, you can check the connectivity of the callback URL based on the returned status code and test result details. Note You can also set the Language parameter and then click Test again to obtain test result details of the specified language. Click Close.	http://alert.aliyun.com:8080/callback
   Labels	The tags of the alert rule. A tag consists of a tag key and a tag value. You can specify up to six tags for an alert rule.	k1,v1
   Push Channel	The Alibaba Cloud service used to deliver alert information. Valid values: Simple Log Service If you turn on Simple Log Service, when an alert is generated, alert information is sent to a Logstore in Simple Log Service. In this case, you must configure the Region, ProjectName, and Logstore parameters. For information about how to create a project and a Logstore, see Getting Started. Message Service - topic If you turn on Message Service - topic, when an alert is generated, alert information is sent to a topic in Simple Message Queue (formerly MNS). In this case, you must specify a region and a topic.Simple Message Queue (formerly MNS) For more information about how to create a topic, see Create a topic. Function Compute If you turn on Function Compute, when an alert is generated, alert information is sent to Function Compute to be formatted. In this case, you must specify a region, a service, and a function. For information about how to create a service and a function, see Quickly create a function.	Turn off all switches
   Recovery Notification	Specifies whether to send notifications when alerts are cleared. The switch is turned on by default.	Turn on the switch
   Method to handle alarms when no monitoring data is found	The method that is used to handle alerts when no monitoring data is available. Valid values: Do not do anything (default) Send alarm notifications Treated as normal	Do not do anything

Create a global alert rule

You can create a global alert rule for all general quota items of a cloud service. If the percentage of used quota or remaining quota of a general quota item reaches the threshold, an alert is triggered.

In the following example, a global alert rule for ECS Quotas by Instance Type is created to describe how to create a global alert rule for a cloud service. If the percentage of used quota reaches 80% of the threshold, alert notifications are sent to the email addresses of the alert contacts in the alert contact group.

1. Log on to the Quota Center console.

2. In the left-side navigation pane, choose Products > General Quotas.

3. In the Elastic Compute section of the Products with General Quotas page, click Elastic Compute Service.

4. On the page that appears, click Global alarm rules in the upper-right corner.

   

5. On the Create Alarm Rule page, configure the parameters and click Confirm.

   The Alarm Metric parameter for a global alert rule supports valid values of only Percentage of Used Quotas(%) and Percentage of Available Quotas(%). Other parameters for a global alert rule are the same as those for a single alert rule. For more information, see Table 1 Parameters for creating an alert rule for a quota item in this topic.

Create a single alert rule

You can create a single alert rule for an API rate limit of a cloud service.

In the following example, the rate limit on the AttachDBInstances operation of Auto Scaling is used to describe how to create an alert rule for an API rate limit. The API rate limit is 300 calls per 60 seconds, and the alert condition is that if the number of calls to the API operation within 60 seconds reaches or exceeds 250, alert notifications are sent to the email addresses of the alert contacts in the alert contact group.

1. Log on to the Quota Center console.

2. In the left-side navigation pane, choose Products > API Rate Limit.

3. In the Elastic Compute section of the Products with API Rate Limits page, click Auto Scaling.

4. Search for the AttachDBInstances operation by entering keywords in the search box. Then, click Create Alarm Rule in the Actions column.

   

5. On the Create Alarm Rule page, configure the parameters in the following table and click Confirm.

   For more information about the parameters, see Table 1 Parameters for creating an alert rule for a quota item in this topic.

Create a global alert rule

You can create a global alert rule for all API rate limits of a cloud service. If the percentage of used quota or remaining quota of calls to an API operation reaches the threshold, an alert is triggered.

In the following example, a global alert rule for Auto Scaling is created to describe how to create a global alert rule for a cloud service. The alert condition is that if the number of calls to an API operation reaches 80% of the threshold, alert notifications are sent to the email addresses of the alert contacts in the alert contact group.

1. Log on to the Quota Center console.

2. In the left-side navigation pane, choose Products > API Rate Limits.

3. In the Elastic Compute section of the Products with API Rate Limits page, click Auto Scaling.

4. On the API Rate Limits page, click Global alarm rules in the upper-right corner.

   

5. On the Create Alarm Rule page, configure the parameters and click Confirm.

   The Alarm Metric parameter for a global alert rule supports valid values of only Percentage of Used Quotas(%) and Percentage of Available Quotas(%). Other parameters for a global alert rule are the same as those for a single alert rule. For more information about the parameters, see Table 1 Parameters for creating an alert rule for a quota item in this topic.