● mongod.service - High-performance, schema-free document-oriented database
   Loaded: loaded (/lib/systemd/system/mongod.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Wed 2017-03-15 09:21:51 PDT; 16min ago
     Docs: https://docs.mongodb.org/manual
  Process: 86627 ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf (code=exited, status=100)
 Main PID: 86627 (code=exited, status=100)

Mar 15 09:21:51 ubuntu systemd[1]: Started High-performance, schema-free document-oriented database.
Mar 15 09:21:51 ubuntu systemd[1]: mongod.service: Main process exited, code=exited, status=100/n/a
Mar 15 09:21:51 ubuntu systemd[1]: mongod.service: Unit entered failed state.
Mar 15 09:21:51 ubuntu systemd[1]: mongod.service: Failed with result 'exit-code'.