db.hello()

db.hello()

New in version 4.4.2: (and 4.2.10, 4.0.21, and 3.6.21)

Returns a document that describes the role of the mongod instance.

If the mongod is a member of a replica set, then the isWritablePrimary and secondary fields report if the instance is the primary or if it is a secondary member of the replica set.

Tip

See:

hello for the complete documentation of the output of db.hello().