Create an alert rule for application monitoring and manage alert notifications

Step 1: Verify whether the application is monitored

To verify whether the user-service application is monitored, perform the following operations:

1. Log on to the EDAS console.
2. In the left-side navigation pane, click Applications. On the page that appears, find the user-service application and click the application name.
   1. On the page that appears, click Application Overview in the left-side navigation pane.
   2. On the Application Overview page, check whether data is displayed.

   If the data of the application is displayed on the page, the user-service application is monitored. If no data is displayed, the application is not monitored. In this case, enable application monitoring for the application.

   Note The sample application is a Java application deployed in an ACK cluster. The information displayed on the page varies with the application type.

Step 2: Go to the Create Application Monitoring Alert Rule page

1. Log on to the EDAS console.
2. In the top navigation bar of the MNS console, select the region where your cluster is deployed.
3. On the Applications page, select EDAS Kubernetes Cluster or Container Service or Serverless Kubernetes Cluster from the Cluster Type drop-down list. Then, click the name of the application for which you want to create an alert rule.
4. In the left-side navigation pane, choose Alert Management > Alert Rules.
5. On the Application Monitoring Alert Rule page, click Create Application Monitoring Alert Rule in the upper-right corner.
6. On the Create Application Monitoring Alert Rule page, set the Alert Application parameter to user-service and the Metric Type parameter to Invocation_Type.

Step 3: Create an alert rule for application monitoring

In this example, two alert rules are created. When you create the alert rules, specify that alert notifications are sent to contacts by using text messages, emails, and DingTalk group messages.

• An alert rule that is used to monitor the response time of requests to the user-service application

  An alert notification is sent if the response time of API requests to the services that are run by the application is equal to or longer than 500 ms in the last 3 minutes. 

• An alert rule that is used to monitor the request success rate for the user-service application

  An alert notification is sent if the success rate of API requests to the services that are run by the application is equal to or lower than 90% in the last 3 minutes. 

1. On the Create Application Monitoring Alert Rule page, enter an alert name and specify the conditions that trigger an alert.
   In this example, first create an alert rule that is used to monitor the request response time for the user-service application.
2. Specify a notification policy for the alert rule.
   • If you have created notification policies, select a notification policy from the Notification Policy drop-down list.
   • If no notification policy is available, perform Step 3 to create a notification policy. After a notification policy is created, click the Refresh icon next to the Notification Policy drop-down list on the Create Application Monitoring Alert Rule page, and select the notification policy that you created from the drop-down list.
3. Optional:Click Create Notification Policy next to the Notification Policy drop-down list.
   In the Create Notification Policy panel, set the parameters and click OK.

   • If you have created contacts, select contacts from the Contact drop-down list.
   • If no contact is available, follow the instructions in Step 4 to create contacts. After a contact is created, reopen the Create Notification Policy panel and select the contacts that you created from the Contact drop-down list.

   
4. Optional:Click Create Contact next to the Contact drop-down list.
   On the Contact page that appears, you can create a contact or a contact group, or add a DingTalk group to receive alert notifications.
   1. On the Contact tab, click Create Contact in the upper-right corner.
   2. In the Create Contact dialog box, set the parameters and click OK.
   3. On the Contact Group tab, click Create Contact Group in the upper-right corner.
   4. In the Create Contact Group dialog box, specify a group name, add the contact that you created in the preceding step to the contact group, and then click OK.
      After you create the contact group, the contact group is displayed on the Contact Group tab.
   5. On the IM robot tab, click Create a robot in the upper-right corner.
   6. In the Create a robot dialog box, set the parameters for the DingTalk group and click OK.
      After you add the DingTalk group to receive alert notifications, the DingTalk group is displayed on the IM robot tab.
5. After the alert rule is configured, click Save.
6. Repeat the preceding steps to create an alert rule that is used to monitor the request success rate for the user-service application.
   To view the alert rules that you created, go to the Alert Management > Alert Rules page.

View alert notifications

When alert conditions are met, alert notifications are sent based on the specified notification methods. Alert notifications can be sent by using text messages, emails, and DingTalk group messages. Examples:

• Text message:
• Email:
• DingTalk group message:

  After you receive alert notifications in a DingTalk group, you can view and handle the alerts in the DingTalk group. For more information, see Manage alerts in a DingTalk group.

Handle alerts

After you receive alert notifications, you can view all the alert notifications and the time each notification was sent on the Alerts page.

1. Log on to the EDAS console.
2. Go to the details page of the application that you want to manage. In the left-side navigation pane, choose Alert Management > Alert sending History.
   The Alerts page appears. On this page, you can view all alert notifications and the time each notification was sent. For more information, see View historical alerts.