Use CloudMonitor to monitor service status

View monitoring data

1. Log on to the CloudMonitor console.
2. In the left-side navigation pane, click Cloud products.
3. On the Cloud products page, click E-MapReduce.
4. On the Clusters tab of the E-MapReduce page, find your cluster and click the cluster ID or Monitoring Charts in the Actions column.
5. Click a time range above the monitoring charts or click the Custom icon to customize a time range.
   You can view the monitoring data of various metrics.

Create an alert rule

1. Log on to the CloudMonitor console.
2. In the left-side navigation pane, click Cloud products.
3. On the Cloud products page, click E-MapReduce.
4. On the E-MapReduce page, click Create Alert Rule in the upper-right corner.
   1. In the Related Resource section, specify Resource Range.
      • If you select All Resources, the alert rule applies to all clusters of your account. In this case, CloudMonitor sends an alert notification no matter which of the clusters meets the alert rule.
      • If you select Cluster, you must specify a cluster. In this case, CloudMonitor sends an alert notification only if the specified cluster meets the alert rule.
   2. In the Set Alarm Rules section, configure an alert rule.

      Configure the parameters. For the metrics of core services, see Metrics of core services.

      For example, to trigger an alert when the HTTP port of DataNodes is unreachable for longer than 5 minutes, select the DataNodeHttpPortOpen metric and specify the other parameters, as shown in the following figure.

      

      Note If you select All from the role drop-down list, the alert rule applies to all nodes in the cluster, including nodes that are added to the cluster in the future.
   3. In the Notification Method section, configure Notification Contact and Notification Methods.
      Notification Contact must be set to one or more contact groups. You can click Quickly create a contact group to create a contact group.

      You can set Notification Methods to a combination of two or more of the following methods: phone calls, text messages, emails, and DingTalk chatbot. To use the phone call method, you must purchase a phone alert resource plan.

   4. Click Confirm.

Metrics of core services