: As far as I am aware, you can't specify the default core with the new solr.xml : format. The default is hard-coded to what's in the example - collection1. If : you happen to have a core named collection1, it will work without a core name : in the URL.
Correct, this is for backcompat with single collection setups and legacy utils that really just need a "no-named" core to work, but as systems are upgraded to take advantage of the new syntax, folks should update their clients to include the collection name in the URL path... https://cwiki.apache.org/confluence/display/solr/Moving+to+the+New+solr.xml+Format "Note that adminPath, defaultCoreName are not supported in discovery-based solr.xml." -Hoss http://www.lucidworks.com/
