Error: couldn't add user: No role named clusterAdmin@dsform :

1.执行下面Error: couldn't add user: No role named clusterAdmin@dsform :

db.createUser( { user: "dsform",

                 pwd: "123456",

                 customData: { employeeId: 12345 },

                 roles: [ { role: "readWrite", db: "dsform" },

                          "readWrite"] },

               { w: "majority" , wtimeout: 5000 } )          

换一个role，角色查看   http://www.cnblogs.com/yangxuming/p/6498631.html