Step 3f: Create Sysplex Application Group WBSRVAPG

About this task

In this step you create the Sysplex Application Group WBSRVAPG as a SERVER group.

Background:

SERVER groups are created when only a certain number of linked resources need to be available to consider the application group as being available.
A SERVER group with an Availability Target of 1 and appropriate preference values can behave like a MOVE group.
A SERVER group with an Availability Target of *ALL and all the preferences of its members set to 700 acts like a BASIC group.

The Web server group WBSRVAPG should run only on SYSTEM1. The WBSRV application and the NET application group are essential parts that must be up, but the DB2® application group is not necessarily needed.

Procedure

Enter NEW WBSRVAPG at the command line. The Define New Entry panel is displayed with the Entry name field already as WBSRVAPG.

Enter the required values on this panel:

The WBSRVAPG application group runs mainly on SYSTEM1. However, WBSRVAPG will have some members that run on other systems in the sysplex, so set the Type field to SYSPLEX.
WBSRVAPG should start with all of its components, but it is acceptable if DB2 cannot be started. So set the Nature of the WBSRVAPG group to SERVER.
For resource generation you need an automation name; you should find WBSRVAPG in the Automation Name field.

The input in the Define New Entry panel should now look similar to Figure 1.

Figure 1. Scenario: Define New Entry Input Panel for WBSRVAPG

   COMMANDS  HELP                                                               
 ------------------------------------------------------------------------------ 
 AOFGDYN3                           Define New Entry                            
 Command ===>                                                                   
                                                                    More:     + 
 Define new entry of type ApplicationGroup                                      
                                                                                
   Entry Name . . . . . . . WBSRVAPG                                            
                                                                                
   Type . . . . . . . . . . SYSPLEX   (SYSTEM SYSPLEX)                          
   Nature . . . . . . . . . SERVER    (BASIC MOVE SERVER) 
   Model  . . . . . . . . . 1                    
                            
   Automation Name  . . . . WBSRVAPG   
                                                                                
   Short description  . . .                                                     
   Long description 1 . . .                                                     
   Long description 2 . . .                                                     
   Long description 3 . . .                                                     
   Long description 4 . . .                                                     
   Long description 5 . . .

Press PF3 to create WBSRVAPG. The Policy Selection panel for WBSRVAPG is displayed with a message indicating that the application group has been created.
On the Policy Selection panel select the WHERE USED policy item. The Where Used panel is displayed with sysplex group SYSPLEX1.
Select the sysplex group and press PF3. The Command Progress Display pop-up window shows that the resource WBSRVAPG/APG has been created.
Select the APPLICATIONS policy item and select the application WBSRV. Press PF3 to return to the Policy Selection panel for WBSRVAPG.
You will be notified that the following resources have been generated:
```
WBSRV/APL/SYSTEM1
WBSRV/APL/SYSTEM2
WBSRV/APL/SYSTEM3
```

Select the RESOURCES policy item of WBSRVAPG to get to the Select Resources panel for WBSRVAPG.

You can see that the preference for the linked resources is the value that you entered when you created the WBSRVAPG application group.

You can use the Preference field to fine-tune the automatic linking of application resources to an application group.

Change the Show all Resources field to YES and press Enter to see the complete list of selectable resources.
Now you need to change the preferences so that the WBSRVAPG application group is started on SYSTEM1 with WBSRV and NET as mandatory components and DB2 as optional. To achieve this:
1. Set the Availability Target to 2.
2. Enter 1000 in the Preference field for the mandatory components (WBSRV/APL/SYSTEM1 and NET/APG).
3. Enter m in the Action field for WBSRV/APL/SYSTEM2 and WBSRV/APL/SYSTEM3 to deselect them.
4. Enter a value between 501 and 999 in the Preference field for DB2/APG/SYSTEM2 and DB2/APG/SYSTEM3.

When the application group is started, all selected members with at least Preference 600 will also be started, but members with Preference 1000 are mandatory.

If you change the Show all Resources field to NO, your definitions should look like Figure 2.

Figure 2. Scenario: Final Select Resources Panel for WBSRVAPG

   COMMANDS  ACTIONS  HELP                                                      
 ------------------------------------------------------------------------------ 
 AOFGARS2                        Select Resources               Row 1 to 4 of 4 
 Command ===>                                                   SCROLL===> PAGE 
                                                                                
 Entry Type  : ApplicationGroup      Entry Name : WBSRVAPG                      
 Sysplex     : SYSPLEX1                                                         
                                                                                
   Number of selected Resources   : 4                                           
   Availability Target. . . . . . . 2        (-3 to 4 , *ALL)                   
   Satisfactory Target. . . . . . .          (Level at which group is available)
   Show all Resources . . . . . . . NO       (YES NO)                           
   Show only Resources with String.                                             
                                                                                
 Action    Preference  Resource Name            Entry Name                      
           700         DB2/APG/SYSTEM2          DB2                             
           700         DB2/APG/SYSTEM3          DB2                             
           1000        NET/APG                  NET                             
           1000        WBSRV/APL/SYSTEM1        WBSRV

Press PF3, select the APPLGROUP INFO policy item in the Policy Selection panel and change the Automatically link Application-Resources into APG field to NO on the Application Group Information panel.

Results

The WBSRVAPG application group is complete. If a start request is issued against WBSRVAPG, both WBSRV and NET must be successfully started for WBSRVAPG to be available.