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db.isMaster()

db.isMaster()

Deprecated since version 4.0.21: Use db.hello() instead.

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

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

See

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

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