Migrate CloudMonitor metrics from a standard NAT gateway to an enhanced NAT gateway - NAT Gateway

Compared with standard Internet NAT gateways, enhanced Internet NAT gateways support more CloudMonitor metrics and the metric names are different. Therefore, after you upgrade a standard Internet NAT gateway to an enhanced Internet NAT gateway, you need to modify CloudMonitor configurations and migrate the metrics.

Step 1: Migrate application groups

Log on to the CloudMonitor console.
In the left-side navigation pane, choose Cloud Service Monitoring > Application Groups.
On the Application Groups page, click the application group.
In the left-side navigation pane, click Group Resources.
On the Group Resources page, click Manage Services and Resources.
In the Add/Modify Group Resources panel, set Associated Cloud Services to Enhanced NAT Gateway, select a region, select an enhanced NAT gateway, and then click OK.
After the NAT gateway is selected, you can view it on the Enhanced NAT Gateway tab.
On the Group Resources page, click the NAT Gateway tab. Find the NAT gateway that you want to delete and click Delete in the Actions column. In the message that appears, click OK.

Step 2: Migrate alert rules

Log on to the CloudMonitor console.
In the left-side navigation pane, choose Alerts > Alert Rules.
On the Alert Rules page, click Create Alert Rule.

In the Create Alert Rule panel, create an alert rule for the NAT gateway and click Confirm.

Parameter	Description
Product	The name of the Alibaba Cloud service that you want to monitor by using CloudMonitor. Select Enhanced NAT Gateway.
Resource Range	The range of the resources to which the alert rule applies. Valid values: All Resources: The alert rule applies to all resources of the specified cloud service. Application Groups: The alert rule applies to all resources in the specified application group of the specified cloud service. Instances: The alert rule applies to the specified resources of the specified cloud service.
Rule Description	The content of the alert rule. The parameters in this section specify the conditions that trigger an alert. To specify the rule description, perform the following steps: Click Add Rule and select a metric type from the drop-down list. In the Configure Rule Description panel, enter a rule name in the Alert Rule field and configure the Metric Type parameter. Valid values of the Metric Type parameter: Simple Metric: Select a metric and set the threshold and alert level for the metric. Combined Metrics: Select an alert level and specify alert conditions for two or more metrics in the Multi-metric Alert Condition section. Note If a multi-metric alert rule is configured, the desired resource must have data on each metric. An alert can be triggered only if the related conditions are met. For example, if a multi-metric alert rule includes Internet metrics but the ECS instance is not configured with an elastic IP address (EIP), alerts cannot be triggered. Expression: Select an alert level and then configure an alert expression. Dynamic Threshold: For more information about dynamic thresholds, see Overview and Create dynamic threshold-triggered alert rules. Note The dynamic threshold feature is in invitational preview. To use the feature, you must submit a ticket. Click OK.
Mute For	The interval at which CloudMonitor resends alert notifications before an alert is cleared. Valid values: 5 Minutes, 15 Minutes, 30 Minutes, 60 Minutes, 3 Hours, 6 Hours, 12 Hours, and 24 Hours. If a metric value reaches the threshold, CloudMonitor sends an alert notification. If the metric value reaches the threshold again within the mute period, CloudMonitor does not resend an alert notification. If the alert is not cleared after the mute period ends, CloudMonitor resends an alert notification. For example, if the Mute For parameter is set to 12 Hours and the alert is not cleared, CloudMonitor resends an alert notification after 12 hours.
Effective Period	The period during which the alert rule is effective. CloudMonitor sends alert notifications based on the alert rule only within the effective period. Note If an alert rule is not effective, no alert notification is sent. However, the alert history is still displayed on the Alert History page.
Alert Contact Group	The alert notifications of the application group are sent to the alert contacts that belong to the selected alert contact groups. An alert contact group can contain one or more alert contacts. The alert contact groups to which alert notifications are sent. For more information about how to create an alert contact and an alert contact group, see Create an alert contact or alert contact group.
Tag	The tag of the alert rule. A tag consists of a tag key and a tag value. Note You can set a maximum of six tags.
Alert Callback	The callback URL that can be accessed over the Internet. CloudMonitor sends HTTP POST requests to push alert notifications to the specified URL. Only HTTP requests are supported. For more information about how to configure alert callback, see Use the alert callback feature to send notifications about threshold-triggered alerts. To test the connectivity of an alert callback URL, perform the following steps: Click Test next to the callback URL. In the Webhook Test panel, you can check and troubleshoot the connectivity of the alert callback URL based on the returned status code and test result details. Note To obtain the details of the test result, configure the Test Template Type and Language parameters and click Test. Click Close. Note You can click Advanced Settings to configure this parameter.
Auto Scaling	If you turn on Auto Scaling, the specified scaling rule is enabled when an alert is triggered. In this case, you must configure the Region, ESS Group, and ESS Rule parameters. For more information about how to create a scaling group, see Manage scaling groups. For more information about how to create a scaling rule, see Manage scaling rules. Note You can click Advanced Settings to configure this parameter.
Simple Log Service	If you turn on Simple Log Service, the alert information is sent to the specified Logstore when an alert is triggered. In this case, you must configure the Region, ProjectName, and Logstore parameters. For more information about how to create a project and a Logstore, see Getting Started. Note You can click Advanced Settings to configure this parameter.
Simple Message Queue (formerly MNS) - Topic	If you turn on Simple Message Queue (formerly MNS) - Topic, the alert information is sent to the specified topic in Simple Message Queue (formerly MNS) (SMQ) when an alert is triggered. In this case, you must configure the Region and topicName parameters. For more information about how to create a topic, see Create a topic. Note You can click Advanced Settings to configure this parameter.
Function Compute	If you turn on Function Compute, an alert notification is sent to Function Compute for format processing when an alert is triggered. In this case, you must configure the Region, Service, and Function parameters. For more information about how to create a service and a function, see Quickly create a function. Note You can click Advanced Settings to configure this parameter.
Method to handle alerts when no monitoring data is found	The method that is used to handle alerts when no monitoring data is found. Valid values: Do not do anything (default) Send alert notifications Treated as normal Note You can click Advanced Settings to configure this parameter.

After the alert rule is created, you can view it on the Alert Rules page and Enhanced NAT Gateway is displayed in the Product Name column.
On the Alert Rules page, set Product to NAT Gateway, find the alert rule that you created for the NAT gateway, and then click > Delete in the Actions column. In the message that appears, click OK.