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Suppression Rules

AOM provides alarm suppression. By using suppression rules, you can suppress or block notifications related to specific alarms. For example, when a major alarm is generated, less severe alarms can be suppressed. Another example, when a node is faulty, all other alarms of the processes or containers on this node can be suppressed.

Precautions

If the source alarm corresponding to the suppression condition is cleared before the alarm notification is sent, the suppression rule becomes invalid. For the suppressed object (alarm suppressed by the source alarm), the alarm notification can still be sent as usual.

Creating a Suppression Rule

  1. Log in to the AOM console. Choose Alarm Center > Alarm Noise Reduction in the navigation pane and click the Suppression Rules tab. Then, click Create.
  2. Set information such as Rule Name and Match Condition.

    Figure 1 Creating a suppression rule

    Match condition refers to the type of alarms which trigger suppression. Suppressed object refers to the type of alarms to be suppressed.

    Specify the match condition and suppressed object using one of the following formats:

    • "key1:value1,key2:value2". Match the value corresponding to the key to determine a suppressed object.
    • "key1,key2". Match the key to determine the suppressed object. All values under the key are covered.
    • "key1,key2,key3:value3". Determine the suppressed object by using the preceding two methods.

      "key:value" pairs must be separated by commas (,). The relationship between "key:value" pairs is "AND". That is, all conditions specified by setting "key:value" pairs must be met.

  3. Click OK.

    After a suppression rule is created, it will take effect for all alarms that are filtered and grouped.

More Operations

After creating a suppression rule, perform the operations listed in Table 1 if needed.

Table 1 Related operations

Operation

Description

Modifying a suppression rule

Click Modify in the Operation column.

Deleting a suppression rule
  • To delete a single rule, click Delete in the Operation column in the row that contains the rule, and then click Yes on the displayed page.
  • To delete one or more rules, select them, click Delete above the rule list, and then click Yes on the displayed page.

Searching for a suppression rule

Enter a rule name in the search box in the upper right corner and click .

Using a suppression rule

For example, the alarm severities are Critical, Major, Minor, and Warning in descending order. If the match condition is set to event_severity:Major and the suppressed object is set to event_severity:Minor, minor alarms will be suppressed when major alarms are reported.

Parent topic: Alarm Noise Reduction