When restarting the system getting error message as no primary index on keyspace

When restarting the system getting error message as no primary index on keyspace.

And when trying to delete the index getting the error message: Indexer not implemented using gsi may not be enabled.

Please suggest .

See the logs (query.log) for error messages during the restart.

Getting below issue but when re-installed also getting same issue.

root@goutham:/opt/couchbase# tail -f var/lib/couchbase/logs/query.log
2016-09-26T18:55:11.472+05:30 [Error] GetSettingsConfig() failed: Get http://127.0.0.1:8091/_metakv/indexing/settings/config: CBAuth database is stale. Was never updated yet.
_time=2016-09-26T18:55:11.545+05:30 _level=ERROR _msg=Unable to initialize cbauth. Error CBAuth database is stale. Was never updated yet.
_time=2016-09-26T18:55:11.545+05:30 _level=WARN _msg=Unable to parse url http://127.0.0.1:8091:
_time=2016-09-26T18:55:11.545+05:30 _level=WARN _msg=Unable to initialize cbAuth, access to couchbase buckets may be restricted
_time=2016-09-26T18:55:12.088+05:30 _level=INFO _msg=New store created with url http://127.0.0.1:8091
_time=2016-09-26T18:55:12.106+05:30 _level=INFO _msg=pollEOF: About to start stdin polling
_time=2016-09-26T18:55:12.149+05:30 _level=ERROR _msg=Could not connect to configstore error=Error connecting to http://127.0.0.1:8091 - cause: CBAuth database is stale. Was never updated yet.
_time=2016-09-26T18:55:12.151+05:30 _level=INFO _msg=cbq-engine started datastore=http://127.0.0.1:8091 max-concurrency=4 loglevel=INFO servicers=16 plus-servicers=64 version=1.5.0 pipeline-cap=512 pipeline-batch=16 request-cap=1024 request-size-cap=67108864 timeout=0
_time=2016-09-26T18:55:12.186+05:30 _level=INFO _msg=HttpEndpoint: Listen Address=[::]:8093
_time=2016-09-26T18:55:12.460+05:30 _level=INFO _msg=HttpEndpoint: ListenTLS Address=[::]:18093

Regards,
Goutham