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MongoDB includes commands for copying a database from one server to another.

// copy an entire database from one name on one server to another 
// name on another server. omit <from_hostname> to copy from one 
// name to another on the same server. 
db.copyDatabase(<from_dbname>, <to_dbname>, <from_hostname>); 
// if you must authenticate with the source database 
db.copyDatabase(<from_dbname>, <to_dbname>, <from_hostname>, <username>, <password>); 
// in "command" syntax (runnable from any driver): 
db.runCommand( { copydb : 1, fromdb : ..., todb : ..., fromhost : ... } ); 
// command syntax for authenticating with the source: 
n = db.runCommand( { copydbgetnonce : 1, fromhost: ... } ); 
db.runCommand( { copydb : 1, fromhost: ..., fromdb: ..., todb: ..., username: ..., nonce: n.nonce, key: <hash of username, nonce, password > } ); 

// clone the current database (implied by 'db') from another host 
var fromhost = ...; 
print("about to get a copy of database " + db + " from " + fromhost);
db.cloneDatabase(fromhost); 
// in "command" syntax (runnable from any driver): 
db.runCommand( { clone : fromhost } );

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