python2.7 ./buildscripts/resmoke.py --auth=AUTH \ --set "executor.fixtures.mongodb_server.mongod_options.setParameter" "enableTestCommands=1" \ --set "executor.fixtures.mongodb_server.mongod_options.dbpath" "`echo $HOME`/smokedata/db/mypath" \ ./jstests/auth/auth1.js Log： Authenticating as internal __system user with mechanism SCRAM-SHA-1 on connection: connection to 127.0.0.1:31000 m31000| 2015-09-17T20:34:12.830+0800 I ACCESS [conn1] SCRAM-SHA-1 authentication failed for __system on local from client 127.0.0.1 ; AuthenticationFai led It is not possible to authenticate as the __system user on servers started without a --keyFile parameter Error: 18 Authentication failed.