pdb. I guess there is a command I have to call to really start the instance
collective.solr.exceptions.SolrConnectionException: HTTP code=404, reason=Not Found. And the Log of Solr shows something like
o.a.s.h.a.ShowFileRequestHandler Can not find: schema.xml [/home/solr/solr-8.2.0/server/solr/mycore/conf/schema.xml]. What does that even mean? From where do I get the
schema.xmlfile? The documentation at https://collectivesolr.readthedocs.io does not help me either.
bin/instance fg. On the other hand,
bin/instance debugis giving you a running zope instance with all of your instance libraries (like zopepy, as you mentioned) and bound to the database, so that you can debug objects, views, whatever you want, without having to access plone from the browser.
fgis the commonly used debug mode when developing plone stuff, so...