How to get the config set name of Solr core

[Andreas Hubold]

Hi,

is there a way to get the name of the config set for an existing Solr 
core from a stand-alone Solr server (not SolrCloud)?

I need the name of the config set to create another core with the same 
config. The actual use case here is to have a script that creates cores 
of the same config on a Solr slave server for replication. I'm using the 
CREATE action of the CoreAdmin API here. I'd hoped that the CoreAdmin 
STATUS returns the config set, but I cannot find it.

Actually, in previous releases (8.4) the instanceDir returned by 
CoreAdmin STATUS pointed to the config set directory, and I was able to 
derive the config set from that. This seems to have changed now (8.6.3): 
instanceDir seems to point to the directory of the created core now.

Is there a way to get the configSet somehow? Or would it be possible to 
add it to the CoreAdmin STATUS response?

Thank you,
Andreas