Supported Metrics

AOM allows you to set threshold alarms for the following types of metrics:

For more information, see section "Metric Overview" in AOM Service Overview.

Procedure

1. Create multi-resource static threshold rules with a few clicks.
   1. Log in to the AOM console. In the navigation pane, choose Alarm Center > Threshold Rules.
   2. On the Rule List tab page, click Create Default Threshold.

      AOM will automatically create six static threshold templates. You can click the Static Threshold Template tab to view the templates. In addition, AOM will automatically create six default static threshold rules based on these templates. The monitored objects are all hosts or components. For example, click next to [node:default-static-rule] CPU Usage to monitor the CPU usage of all hosts.

      If you add hosts or components later, AOM automatically applies the rules to them.

      Figure 1 Creating default multi-resource static threshold rules
      

      Table 1 Description of default multi-resource static threshold rules

      Rule/Template	Resource	Metric	Default Configuration
      Rule: [node: default-static-rule] CPU Usage Template: [node: default-static-template] CPU Usage	Host	CPU usage	Statistic Method: Average; Threshold Condition: > 90%; Consecutive Periods: 3; Statistical Cycle: 1 minute; Alarm Severity: Major; Send Notification: No
      Rule: [node: default-static-rule] Physical Memory Usage Template: [node: default-static-template] Physical Memory Usage		Physical memory usage
      Rule: [node: default-static-rule] Node Status Template: [node: default-static-template] Node Status		Host status	Statistic Method: Average; Threshold Condition: > 0; Consecutive Periods: 1; Statistical Cycle: 1 minute; Alarm Severity: Major; Send Notification: No
      Rule: [service: default-static-rule] CPU Usage Template: [service: default-static-template] CPU Usage	Component	CPU usage	Statistic Method: Average; Threshold Condition: > 90%; Consecutive Periods: 3; Statistical Cycle: 1 minute; Alarm Severity: Major; Send Notification: No
      Rule: [service: default-static-rule] Physical Memory Usage Template: [service: default-static-template] Physical Memory Usage		Physical memory usage
      Rule: [service: default-static-rule] Status Template: [service: default-static-template] Status		Component status	Statistic Method: Average; Threshold Condition: > 0; Consecutive Periods: 1; Statistical Cycle: 1 minute; Alarm Severity: Major; Send Notification: No

2. Create a multi-resource static threshold rule by using a custom static template.
   To create multi-resource static threshold rules for metrics excluding those listed in step 1, perform the following operations:

   1. Before creating a static threshold rule, create a static threshold template.
   2. Log in to the AOM console. In the navigation pane, choose Alarm Center > Threshold Rules. Then, click Add Threshold in the upper right corner.
   3. Select a resource. Specifically, enter a threshold rule name, select Template importing for Creation Mode, select a resource type, select the resource to be monitored from the resource tree, and click Next.
      

      • When the option below Resource Type is disabled: You need to select one or more resources from the resource tree. A maximum of 100 resources can be selected.
      • When the option below Resource Type is enabled: If Resource Type is Host, all hosts will be monitored. If Resource Type is Component, all components will be monitored. This function also takes effect for hosts or components added later.
      Figure 2 Selecting the resource to be monitored
      
   4. Select the created static threshold template.
      Figure 3 Creating a multi-resource static threshold rule
      
   5. Click Submit to create a multi-resource static threshold rule. Then click to monitor the same metric of multiple resources.

      When a threshold alarm is generated, you can choose Alarm Center > Alarm List in the navigation pane and view the alarm in the alarm list. If any host meets the preset notification policy, an email or SMS message will be sent.

3. Customize a single-resource static threshold rule.
   To create single-resource static threshold rules for metrics excluding those listed in step 1, perform the following operations:

   1. Log in to the AOM console. In the navigation pane, choose Alarm Center > Threshold Rules. Then, click Add Threshold in the upper right corner.
   2. Select a resource. Specifically, enter a threshold name, select Custom creation for Creation Mode, select a resource type, select the resource to be monitored from the resource tree, and click Next.
      

      • You can select a maximum of 100 resources from the resource tree.
      • When multiple resources are selected, multiple single-resource static threshold rules will be created after the creation is complete. Each resource is monitored by a single-resource static threshold rule. A rule name consists of the threshold rule name you enter in the Threshold name text box, and a sequence number ranging from 0 to 9. The resource which is selected earlier has a smaller number.
      Figure 4 Selecting resources
      
   3. Customize a threshold. Specifically, select the metric to be monitored, and set parameters such as Threshold Condition, Consecutive Period (s), Alarm Severity, Statistic Method, and Send Notification.
      

      • Threshold Condition: Trigger condition of a threshold alarm. A threshold condition consists of two parts: determination condition (≥, ≤, >, or <) and threshold value. For example, if Threshold Condition is set to > 85 and an actual metric value exceeds 85, a threshold alarm will be generated.
      • Consecutive Period (s): If the metric value meets the threshold condition for a specified number of consecutive periods, a threshold alarm will be generated.
      • Statistic Method: Method used to measure metrics.
      • Statistical Cycle: Interval at which metric data is collected.
      • Send Notification: Whether to send notifications by email or SMS message when the static threshold rule status (Exceeded, OK, or Insufficient) changes.
        • If you want to receive notifications by email or SMS message, select Yes, set a notification policy, select a created topic, and select a trigger condition.
        • If you do not need to receive notifications by email or SMS message, select No.
      • Trigger Condition: Condition for sending a notification.

        You can select multiple trigger conditions. For example, to receive notifications if the threshold status changes to Exceeded, select Threshold crossing. To receive notifications upon any threshold status change, select all trigger conditions.

      Figure 5 Customizing a threshold
      
   4. Click Submit to create multiple single-resource static threshold rules. Each resource is monitored by an independent rule.

      If a single-resource static threshold rule monitors a host and the CPU usage of the host exceeds the threshold, a threshold alarm will be generated on the alarm page. You can choose Alarm Center > Alarm List in the navigation pane and view the alarm in the alarm list. If any host meets the preset notification policy, an email or SMS message will be sent.

      Figure 6 Creating a single-resource static threshold rule