Logon Group Configuration 

Use

You define logon groups to determine how client requests to certain applications are load balanced when your system setup uses the SAP Web Dispatcher or a third-party hardware load balancer in front of your application servers. For example, you can define a logon group so that a certain application (such as one with high CPU usage) is accessible only on two instances within your cluster, which are running on machines equipped with extra CPU resources.

Features

When you use logon groups for load balancing, then the logon group the application is requested with must be present in the request URL. It is presented next to the application alias of the requested application (separated by the zone separator symbol that is configured). The zone separator is configured in the HTTP Provider Service using the Visual Administrator as described in Configuring the Zone Separator.

To request an application called TestApp within the test logon group (provided the default zone separator is used), you can use the following URL: http://<host>:<port>/TestApp~test/<application_resource>.

The logon group definition consists of the following actions:

·        Definition of the instance IDs of the Java instances in the cluster where applications from this group are accessible.

·        Definition of the application aliasesof the applications that are requested with the corresponding logon group.

Activities

You can display the overview page of the existing logon groups if you choose System Management  →  Configuration  →  Logon Groups. The Logon Groups frame on the right contains a table that lists all logon groups on all registered systems.

If you select a logon group from the list, the configuration settings for it are displayed in the Details frame.