Mongo.setSlaveOk()

• Mongo.setSlaveOk()
• For the current session, this command permits read operations fromsecondary instances. Practically, use this method in thefollowing form:

db.getMongo().setSlaveOk()

Indicates that “eventually consistent” read operations are acceptable for the currentapplication. This function provides the same functionality asrs.slaveOk().

See the readPref() method for morefine-grained control over read preference in the mongo shell.