$ ${SOLR_ROOT}/bin/solr delete -help Usage: solr delete [-c collectionName] [-deleteConfig boolean] [-p port] [-V] The default behavior is to also delete the configuration directory from ZooKeeper so long as it is not being used by another collection. You can override this behavior by passing -deleteConfig false when running this command. -c collectionName Name of the collection to delete. -deleteConfig boolean Delete the configuration directory from ZooKeeper; default is true. -p port Port of a local Solr instance where you want to delete the collection. If not specified, the script will search the local system for a running Solr instance and will use the port of the first server it finds. -V Enables more verbose output.

$ ${SOLR_ROOT}/bin/solr delete -c collection6 -deleteConfig false -p 8983
Here's the output of running this command on my localhost where I have 2 Solr instances and 1 ZooKeeper instance.

{ "responseHeader": { "status": 0, "QTime": 220 }, "success": { "192.168.2.33:8983_solr": { "responseHeader": { "status": 0, "QTime": 40 } }, "192.168.2.33:8984_solr": { "responseHeader": { "status": 0, "QTime": 51 } } } } Deleted collection 'collection6' using command: http://192.168.2.33:8983/solr/admin/collections?action=DELETE&name=collection6
Notes:

• The collection will be deleted from ZooKeeper.
  
  
• For all the Solr alive instances, the collection folders (replicas) on the file system will be deleted.
  
  
• If you set the "deleteConfig" option to "true" (default), the Solr config will be deleted from ZooKeeper.