HOW TO
In some instances, a federated GIS server is unavailable for use as a hosting server from the portal website. This occurs even though the federated GIS server has a validated relational and tile cache data store.
As an alternative, follow the steps described in this article to specify a federated GIS server as a portal's hosting server through Portal Administrator Directory.
Note: The URL for the Portal Administrator Directory from a default installation of ArcGIS GIS Server is: https://webadaptorhost.domain.com/webadaptorname/portaladmin
To verify the server is selected as the hosting server, check the server role security configuration in ArcGIS Server Administrator Directory. The role must display hosting server instead of federated.
Note: The URL for the ArcGIS Server Administrator Directory from a default installation of Portal for ArcGIS is: https://webadaptorhost.domain.com/webadaptorname/admin
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