Using Service Discovery › How to Create Dynamic Service Policies › Define the Service

Define the Service

The wizard guides you through the process of service creation.

Follow these steps:

1. Specify a name for the service in the Service Name field.
2. The Define Service page lets you name the new dynamic service and assign user groups to the service. Assigning user groups for the service lets Service Discovery automatically assign the same user access to the services when it (Service Discovery) creates them. This way, you enhance the security of the service, as only authorized users are able to access the service.

   Click Next.

3. On the Relationship Criteria page, select a USM relationship type from the Relationship Type drop-down list. This relationship type defines the relationship between the service CI and CIs that meet the policy criteria.

   The Target pane lets you build criteria using Boolean expressions.

4. Select a USM type from the Class drop-down list in the Target pane.

   Consider the following:

   • The Attribute drop-down list displays a subset of the USM properties available for the selected type. Certain attributes such as MdrProduct attributes and date/time data types are not supported and do not appear in the drop-down.
   • When you select a USM type, all available derived types in the USM hierarchy are also included. For example, when you select the ComputerSystem type, its child type VirtualSystem is automatically included in the policy.
   • For USM property definitions, see the USM Schema Documentation that is provided on the CA SOI Bookshelf.
5. (Optional) Select a USM attribute, comparison type, and attribute value for the expression. If you want to add all CIs of the selected type without adding attribute criteria, skip to Step 6.

   Note: You can use regular expressions by selecting either Matches regex or Does not match regex from the Comparison Type drop-down list. Regular expressions are not available for all attributes. Click Test Regex to open the Regex Tester and test the regular expression against a string. For information about using regular expressions in other CA SOI features, see the Event and Alert Management Best Practices Guide.

   Important! If you do not add attribute criteria, you risk discovering a large number of CIs, which can compromise system performance.

   Note: For attribute values, mouse over the field and a tooltip displays the data type required.

6. Click Add.

   The criteria are added to the expression, which appears in the logic tree and as an expression in the field at the bottom of the page.

7. (Optional) Repeat Steps 3 - 6 to add additional criteria and logic.

   Note: For more information about using advanced logic with multiple target criteria, click the Hints link above the logic tree.

8. Click Next.

   The Confirm page opens. A Topology Warning dialog may appear if the Service Discovery editor detects that the policy might cause topology errors or unmanageable services. Evaluate the policy before proceeding to verify whether changes are required. For more information, see Topology Warnings.