Elastic Container Instance:Use CloudMonitor to obtain information about instances whose storage spaces are insufficient

Background information

CloudMonitor can monitor metrics such as CPU utilization, memory usage, and storage capacity of elastic container instances. You can configure alert rules based on these metrics to obtain the running status of elastic container instances in a timely manner and handle abnormal instances. For more information about the metrics of elastic container instances that CloudMonitor monitors, see Use CloudMonitor to monitor elastic container instances.

Procedure

1. Log on to the CloudMonitor console.

2. In the left-side navigation pane, choose Alerts > Alert Rules.

3. Click Create Alert Rule.

4. In the panel that appears, configure parameters and then click Confirm.

   The following table describes major parameters. Use default values for other parameters. For more information about how to configure alert rules, see Create an alert rule.

   Parameter	Description
   Product	Select Elastic Container Instance (ECI).
   Resource Range	Select the range of resources to which the alert rule applies. In this example, the value of Instances is selected. Valid values: All Resources: The alert rule applies to all resources of the specified cloud service that are created after the alert rule is created. Application Groups: The alert rule applies to all resources that are created after the alert rule is created in the specified application group of the specified cloud service. Instances: The alert rule applies to the specified resources of the specified cloud service.
   Associated Resources	If you select Instance as the resource range, you can specify elastic container instances. Click Add Instance. In the dialog box that appears, select the elastic container instances that you want to monitor.
   Rule Description	Click Add Rule and select Simple Indicators. In the panel that appears, configure the alert rule. In this example, the alert rule has the following configurations: Alert Rule: test Metric Type: Simple Indicators Metric: volume Threshold and Alarm Level Critical: 3 consecutive cycles (1 cycle = 1 minute), average ≥ 90 Warn: 3 consecutive cycles (1 cycle =1 minute), average ≥ 80 Info: 3 consecutive cycles (1 cycle = 1 minute), average ≥ 70 Dimension: EphemeralVolume For information about how to configure complex alert conditions, see Alert rule expressions.
   Alert Contact Group	CloudMonitor automatically adds your Alibaba Cloud account as an alert contact to the default alert contact group. You can also go to the Alert Contacts page to create alert contacts and alert contact groups. For more information, see Create an alert contact or alert contact group.

What to do next

After you create an alert rule, if the specified metric reaches the alert threshold, the system automatically sends a notification to the specified contact.

You can also find the alert rule that you configure on the Alert Rules page and click Alert History in the Actions column to view relevant alerts.

After you receive an alert notification, you can handle the alert based on your business requirements. For example, you can create a new elastic container instance and scale up its temporary storage space to replace the elastic container instance that has insufficient storage space.

References

If you use elastic container instances in Kubernetes, you can add the k8s.aliyun.com/eci-eviction-enable: "true" annotation to Elastic Container Instance-based pods to automatically evict a pod when the temporary storage space of the pod is insufficient to be less than 100 MiB. For more information, see Automatically evict pods whose temporary storage spaces are insufficient.