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Permanent deactivation of Backend Appl Instance in Web Dispatcher

Former Member
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Hi all.

We have a Web Dispatcher 7.20 for managing HTTP(S) traffic to multiple backends. It is correctly configured and it balances load for every Backend System.

For one Backend System, we want to avoid permanently the possibility that the WDP sends HTTP(s) , but we do want to keep in the ICM of the corresponding Backend instance the HTTP(s) services, because it will be used for other purposes. Furthermore we still want the WDP balances HTTP(s) load for the rest of instances.

We know that the WDP Admin Console has the possibility of a "temporal" deactivation a specific Backend Instance for the WDP:

In the tree structure of the WDP Admin Console, we go to the corresponding <SID>, select Monitor Application Servers. We will see a table like this

Nr Valid Name Hostname ....

0 OK <ApplInstance#1> <hostname#1> ....

1 OK <ApplInstance#2> <hostname#2> ....

2 OK <ApplInstance#3> <hostname#3> ....

We right-click on one of the instance (for example #2) and we select option "Deactivate Server".

With this option, the Instance is not taken into account when balancing HTTP(s) load from the WDP to the Backend. The problem is that whenever the WDP is restarted this configuration is lost, and all Instances are active for the WDP again

Is there a way to make this change permanent?

Best regards and thanks in advance for your help

Antonio

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Answers (1)

Answers (1)

Former Member
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By the way.

We know that a possible workaroung would be to assign for every SICF Web Service a specific LOGON GROUP, like it is mentioned here: http://help.sap.com/saphelp_nw70/helpdata/en/5a/3bee11b93b440bb1d8bc4473e82528/content.htm

We could create a custom LOGONGROUP in Backend containing only the relevant Instances for WDP. The problem is that ii has to be maintained in every SICF Web Service, and this task is not an option when the number of services to be used is high.

regards

Antonio