Configuring Metric Defaults in Perl Policies

The Default Metric Attributes page enables you to assign default values to the metric attributes. The values can be used when defining the policy rules on the Rules tab, and can also be overridden there.

For examples and end-to-end workflow information on collecting metrics data, see Collecting Metrics Data topic.

To access

In the Operations Connector user interface, click in the toolbar. Then click Metric > Perl Script.

Alternatively, double-click an existing policy to edit it.

Click Defaults to open the policy Default Metric Attributes page.

Metric attributes

Each time a metric policy runs, it extracts raw data from its defined data source and builds a metric structure.

A metric structure consists of these attributes:

• Basic attributes:

  • Data domain

    The namespace of the integrated performance records, used in the Operations Agent store to avoid clashes.

  • Metric class

    Defines the metric class under which the metric appears in the Operations Agent store and consumers.

  • Metric name

    Defines the metric name under which the metric appears in the Operations Agent store and consumers.

  • Related CI

    Used to identify an instance of a performance record and associates it with a concrete CI instance. For details on how to associate the Related CI with the values in the RTSM model, see Create a policy topic. For an example, see Example – Create a Metrics Policy topic.

  • Node

    Used to identify a node-like CI to which the performance records are associated to.

  • Value

    The actual performance value which is converted to 64-bit floating point number.

  • Time measured

    The time stamp when the value was determined in the third-party system.

• Advanced attributes:

  • Original metric name

    The name of the metric as used on the third-party system.

  • Unit

    The unit of the metric.

  • Integration id

    An id, used to identify the source of the integration.

Tasks

How to configure metric defaults for Perl script policies

This task describes how to configure metric attribute defaults for all metrics collected by this policy.

1. Define the metric attributes common to all metrics collected by this policy, such as metric class and name. All metrics in the Basic tab marked with a * are required. Advanced attributes are optional.

2. Optional. Use the Data key names tab to drag data keys to the attribute boxes. Alternatively, you can type the name of the data key directly into the attribute box.

   Perl attribute key names use the following syntax:

   <$DATA:<AttributeName>>

   where <AttributeName> is the data key name in a Perl hash array.

   Operations Connector replaces the data key at runtime with the value of the specified data key.

   The Data key names tab is empty if no result data key names have been specified in the Source page of the Perl Script policy.

3. Optional. Use the Mappings tab to add mapping definitions to the attribute boxes.

   Mappings are custom variables that you define in the Mappings tab. The default name of the mapping variable is map<AttributeName>, for example mapSeverity.

   Alternatively, type the custom variable into the attribute box by using the following syntax:

   • Map Name list contains the map name of the variable: map<AttributeName>, for example mapSeverity.

   • Input Data Property list item: <$DATA:<AttributeName>>

     For example, the custom variable mapSeverity has the <$DATA:Severity> input data property, where Severity is the name of the hash key value.

4. Optional. Use the Operators tab to apply operators to the attribute values. Two functions are available:

   $MATCH(), to test a string or a variable against a pattern. The $MATCH function accepts three or four parameters:

   - the input string

   - the pattern definition

   - the output string if pattern matches on the input string

   - the output string if the pattern does not match (optional)

   Example: The data of the input field hostname start always with "TEST" (for example "TESTABC"). The $MATCH function to use the string after "TEST" is as follows:

   $MATCH(<$DATA:hostname>,TEST<*.prefix>,<prefix>)

   • <$DATETIME(FORMAT,VALUE)>, to convert the format of dates from the common format to the UNIX systems time (Epoch time) format.

     For detailed description of the format, see Pattern Matching in Policy Rules topic.

     To apply operators to the attribute values, you can drag and drop them to a text field in the left pane of the same policy editor page. The appropriate tooltips are shown while performing this operation, which describe the role of the dragged operator.

5. Optional. Use the Indicators tab to add indicators to the source or target value fields. After loading the indicators from the connected OMi server, the Indicators tab shows a hierarchy of configuration item types.

6. Optional. In the Policy Variables tab, add policy variables to metric attributes. Operations Connector replaces the variables with the appropriate values in the generated metric.

   Use quotation marks to surround variables, for example "<$MSG_NODE>" or "<$MSG_GEN_NODE>", at least for those variables whose values can contain space characters.

Related tasks

• How to Collect Metrics Data by Using Perl Scripts

UI Descriptions

Related topics

Configuring the Data Source in Perl Policies

Configuring Metric Defaults in Perl Policies

Create a policy

Example – Create a Metrics Policy