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HUAWEI CLOUD Stack 6.5.0 Alarm and Event Reference 04

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Setting Masking Rules

You can set an alarm masking rule to mask alarms or events that you are not concerned about. The masked alarms or events will not be displayed on the Current Alarms or Events page.


  • You have the operation rights for Alarm Settings.
  • You can enable, disable, add, delete, modify, and import rules configured for MOs. For rules not configured for MOs, you can only view and export them.


  • A masking rule takes effect only for the alarms and events that are reported after the rule is set.
  • After a masking rule is disabled, deleted or modified, alarms or events that have been masked are not reported again.
  • The masking rules mask alarms based on the original alarm attributes (alarm attributes before redefinition). If both severity redefinition rule and masking rule are set for an alarm, the masking rule will take effect before the redefinition rule takes effect.
  • A maximum of 200 masking rules are supported.
  • If all of the following conditions are met, the masking rule will mask all alarms or events, and alarms or events cannot be reported.
    • The masking rules are enabled.
    • All alarm or event sources are selected in the masking rule.
    • All alarm or event severities are selected in the masking rule.
    • The start time and end time of the masking rule are not selected.
  • The procedure for creating an event masking rule is similar to that for creating an alarm masking rule. This operation takes creating an alarm masking rule as an example. If you need to create an event masking rule, click Create on the Masking Rules page and choose Event Masking Rules.


  1. On the main menu, choose Alarms > Alarms > Alarm Settings.
  2. In the navigation pane, choose Masking Rules.
  3. On the Masking Rules page, click Create and select Alarm Masking Rules.
  4. Set the rule name, alarm source, and the alarm severity. You can also select the Designated alarms check box to select the alarms you want to mask.

    • All alarm sources is available only when the user can manage all resources.
    • In the Alarm Sources area, you can select All alarm sources to mask the alarms that meet the conditions and are generated by the system and all MOs. Therefore, exercise caution when you set the alarm source.

  5. In the Filter area, set alarm parameters to filter the alarms to be masked.

    For example, if you want to filter alarms by location information, select Location Info and contains and enter alarm locating information in the text box.

  6. Set the rule execution time. You can set the effective time and effective cycle.


    If all options of Time Filter are not selected, the rule is effective at any time.

  7. In the Action area, set Masked alarms to Discard or Show in Masked Alarms.


    When an event masking rule is being created, masked events can only be discarded.

  8. Set the priority of this rule. When an alarm meets two alarm masking rules, the rule with a higher priority takes effect.
  9. Specify whether to enable the rule. Click OK to complete the configuration.

Related Tasks

  • To re-receive masked alarms or events, choose Alarms > Alarms > Alarm Settings on the main menu. In the navigation pane on the left, choose Masking Rules. In the masking rule list, select a desired masking rule and click Delete or Stop. If you click Delete, the masking rule will be deleted. If you click Disable, the masking rule cannot be used. You can click Enable to enable the alarm rule again if necessary.
  • Users can import or export masking rules for statistical analysis, review, and migration. On the Masking Rules page, click Import or Export to import or export rules.
    • The format of imported files must be XLS and the size cannot exceed 1 MB. A maximum of 200 rules can be imported. If the imported rule name already exists, the original rule will be replaced by the imported one.
    • The first row is hidden in the exported files. Do not modify the text in the first row. Otherwise, the import will fail.

Task Example


O&M personnel plan to commission device A at 01:00 every Monday in April, 20XX. The commissioning is completed within two hours, during which services of device A are interrupted. Alarms generated during this period are predictable and do not need to be handled. You need to configure masking rules to mask these alarms.


  1. On the Masking Rules page, click Create and select Alarm Masking Rules.
  2. Set Rule name.
  3. Select Custom alarm sources and add device A to the custom alarm sources.
  4. In the Time Filter area, set By period to 20XX-04-01 00:00:00 to 20XX-04-30 23:59:59, set By day to Monday, and set By time to 01:00 to 03:00.
  5. In the Action area, set Masked alarms to Show in Masked Alarms.
  6. Retain the default settings for other parameters, such as Filter, Severity, and Enable.
  1. Click OK.


The alarms generated by device A from 01:00 to 03:00 every Monday in April 20XX are not displayed on the Current Alarms, Alarm Logs, or Historical Alarms pages. You can view the masked alarms on the Masked Alarms page.

Updated: 2019-08-30

Document ID: EDOC1100062365

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