Using searchapi module on a drupal multisite installation We are setting up a Drupal multisite installation, which is going to look like

themastersite.edu
themastersite.edu/somethinglikethesubsite1
themastersite.edu/somethinglikethesubsite2 and so long


I've read some documentaition around Searchapi module, but I can't find out if there is a possibility to have, in themastersite.edu, a searchapi page that should search in all subsites ?

Any help or link, welcome.
You declared that searchapi is the solution but actually Solr Multisite can do this.