Viewing the Solr core status 

Use the Solr API to view the status of the Solr core.

You can use the Solr API to view the status of the Solr core. For example, to view the status of the wiki.solr core after running the wikipedia demo, use this URL:
http://localhost:8983/solr/#/~cores/wiki.solr


Status of all Solr cores 

To view the status of all Solr cores:
http://localhost:8983/solr/admin/cores?action=STATUS
For example, the status of the wiki.solr core looks like this:
 {
     "defaultCoreName":"default.1371321667755813000",
     "initFailures":{},
     "status":{
       "wiki.solr":{
         "name":"wiki.solr",
         "isDefaultCore":false,
         "instanceDir":"solr/",
         "dataDir":"/var/lib/cassandra/data/solr.data/wiki.solr/",
         "config":"solrconfig.xml",
         "schema":"schema.xml",
         "startTime":"2013-06-16T21:05:54.894Z",
         "uptime":7212565,
         "index":{
           "numDocs":3579,
           "maxDoc":3579,
           "deletedDocs":0,
           "version":532,
           "segmentCount":15,
           "current":false,
           "hasDeletions":false,
           "directory":"org.apache.lucene.store.
             NRTCachingDirectory:NRTCachingDirectory
           (org.apache.lucene.store.NIOFSDirectory
           @/private/var/lib/cassandra/data/solr.data/wiki.solr/index lockFactory=
           org.apache.lucene.store.NativeFSLockFactory@e3f6d;
             maxCacheMB=48.0 maxMergeSizeMB=4.0)",
           "userData":{"commitTimeMSec":"1371416801053"},
           "lastModified":"2013-06-16T21:06:41.053Z",
           "sizeInBytes":8429726,
           "size":"8.04 MB"},
         "indexing":false}}}