The SOLR Admin UI is an interesting tool for monitoring the created cores, reviewing their configuration, querying them, understandng the cache performances, collecting useful troubleshooting information and many other things.
Having this tool in the hands of a System Admin could be really worth it. The UI is the following one:
The WCS InfoCenter describes the steps to follow in order to integrate the admin UI files in the solr-search web app: Info Center, Search performance tuning, Performance monitoring
However, it seems to have a couple of inaccuracies. So, I decided to report my experience deploying the SOLR Admin UI on FEP7 toolkit.