Implementing Services › Service Definition Panels › Select Service Members

Select Service Members

To select service members

1. From the General Description panel, press F8 (Forward).

   The Service Filters panel appears. This panel defines the filters that select the members of the service.

2. Define the filters by specifying the following criteria:
   • The service class (SVC, if the member is another service) or resource class in the Class field.
   • The name of the member in the Name field. You can use the following wildcard characters:
     • The underline character (_) represents a single character. For example, PROD_X3A matches PROD1X3A, PROD2X3A, …
     • The percent character (%) represents zero or more characters. For example, PROD%X3A matches PRODX3A, PROD1X3A, PROD2X3A, …
     • You can also use the asterisk (*) as a wildcard character. An asterisk behaves the same way as the % character, but you cannot have the * at the beginning of or embedded in the specified value. For example, * and PROD* are valid values.
   • The SMF ID of the system that owns the member in the SMF ID field. The default is the SMF ID of the local system.

     When you have resources with the same identification defined on different systems and you want to include all those resources as members, specify * in the SMF ID field.

   • The type of resource (as specified in the resource definition) in the Type field. You can use the asterisk (*) wildcard character by itself or at the end of the specified value.

     Note: The Type field is irrelevant for a service. Leave the value to the default.

   • A weight that indicates how important the member is to the service in the Weight field.
   • The type of weight in the Weight Type field.

   You can define up to 97 lines of members.

Weight of a Service Member

The weight indicates how important a member is to the service. The valid values are 0 percent through 100 percent.

If the weight is 100 percent, the actual state of the member affects the actual state of the service directly. For example, if the member fails, the service fails.

If the weight is 0 percent, the member has no effect on the service.

If the weight is between 0 percent and 100 percent, the effect of the member on the service depends on the state thresholds.

You can apply the following types of weights to service members:

Fixed Weight

With a fixed weight, every member included in a line entry has the weight specified in the Weight field.

In the following examples, the weight is 100 percent fixed:

• If the line entry includes only one member (for example, the PRODA started task on the EASTTEST 0001 system), the member has 100 percent weighting.
• If the line entry includes more than one member (for example, the PRODA started tasks on all the connected systems (SMF ID=*)), each member has 100 percent weighting.

Proportional Weight

You can use the proportional type of weight when the line entry includes more than one member. With a proportional weight, every member included in the line entry has an equal proportion of the weight specified in the Weight field. For example, if the weight is 100 percent proportionally applied to two members, each member has 50 percent weighting in the service.

View the Service as Defined by the Service Filters

The service filters select the members for a service. Only members defined in active system images are selected. The members can change if the active system images change (for example, when a connected region has a different system image loaded).

To view the members in a service, press the F5 (Model) function key.

Merge Two Service Images

You can merge two service images and replace the active image with a backup version.

To merge service images $SERVICE 0002 and $SERVICE 0001

1. Enter C beside the $SERVICE 0002 on the ServiceView : Service Image List panel.

   The ServiceView : Service Image Definition panel appears.

2. Change the Database Version number to 0001and press F3 (File).

   The Confirm System Image Merge panel appears.

3. Enter YES in the input field if you want to overlay like-named components.
4. Press F6 (Confirm).

   The service images are merged.