No, Solr stoped supporting the concept of a default core back in Solr5. The only tangible benefit to having a default was being able to change the default to point at a diff core w/o impacting existing users.
You can easily do the same thing by creating a core/collection alias that you use in your clients, which you can later change. : Date: Tue, 13 Dec 2016 16:54:18 -0500 : From: Max Bridgewater <max.bridgewa...@gmail.com> : Reply-To: solr-user@lucene.apache.org : To: solr-user@lucene.apache.org : Subject: Solr 6 Default Core URL : : I have one Solr core on my solr 6 instance and I can query it with: : : http://localhost:8983/solr/mycore/search?q=*:* : : Is there a way to configure solr 6 so that I can simply query it with this : simple URL? : : http://localhost:8983/search?q=*:* : : : Thanks. : Max, : -Hoss http://www.lucidworks.com/