For the purposes of Advertisement and Discovery, caGrid leverages the Globus-provided Index Service. The Index Service implements the standard WS-ServiceGroup specification. When services are added to the service group, they specify what and how metadata should be accessed from them, and the Index Service performs this aggregation. Clients can then query this aggregated information using standard Resource Property operations. More information on these operations can be found here.
caGrid services are expected to maintain soft-state registration to a well-known, Index Service instance, specifying polling of standard caGrid standard metadata. For more information, see the section on caGrid Advertisement.
For more information on the Index Service, see the Globus documentation (http://www.globus.org/toolkit/docs/4.0/info/).
The Index Service Administrators Guide is intended for administrators that wish to install the Index Service. The administrators guide provides detailed information regarding the installation, operation, and administration of the Index Service.