Cannot authenticate into mongo auth fails

Question

I ve created an admin user for mongo using these directions   http   docs mongodb org manual tutorial add-user-administrator   From the mongo client it looks like I can authenticate    gt  use admin switched to db admin  gt  db auth  admin   SECRETPASSWORD    1  gt    But I can t connect any other way  For example      mongo -u admin -p SECRETPASSWORD   gives the error   JavaScript execution failed  Error  18   code  18  ok  0 0  errmsg   auth fails    at src mongo shell db js L228   I have auth   true in etc mongod conf   What am I missing

User · Answer

You may need to upgrade your mongo shell  I had version 2 4 9 of the mongo shell locally  and I got this error trying to connect to a mongo 3 database  Upgrading the shell version to 3 solved the problem

User · Answer

This fixed my issue    Go to terminal shell and type mongo   Then type use db name   Then type    db createUser            user   mongodb        pwd   dogmeatsubparflavour1337        roles      role   dbOwner   db   db name                Also try  db getUsers       Quick sample    const MongoClient   require  mongodb   MongoClient      MongoDB Connection Info const url    mongodb   mongodb dogmeatsubparflavour1337 stackoverflow com 27017  authMechanism DEFAULT amp authSource db name      Additional options  https   docs mongodb com manual reference connection-string  connection-string-options     Use Connect Method to connect to the Server MongoClient connect url     then  db    gt        console log db       console log  Casually connected correctly to server            Be careful with db close   when working asynchronously     db close            catch  error    gt        console log error

User · Answer

This is kind of a specific case  but in case anyone gets here with my problem   In MongoHQ  it ll show you a field called  password   but it s actually just the hash of the password  You ll have to add a new user and store the password elsewhere  because MongoHQ won t show it to you

User · Answer

I know this may seem obvious but I also had to use a single quote around the u n and p w before it worked     mongo admin -u  user  -p  password

User · Answer

It appears the problem is that a user created via the method described in the mongo docs does not have permission to connect to the default database  test   even if that user was created with the  userAdminAnyDatabase  and  dbAdminAnyDatabase  roles

User · Answer

Another possibility  When you created the user  you may have accidentally been useing a database other than admin  or other than the one you wanted  You need to set --authenticationDatabase to the database that the user was actually created under   mongodb seems to put you in the test database by default when you open the shell  so you d need to write --authenticationDatabase test rather than --authenticationDatabase admin if you accidentally were useing test when you ran db createUser        Assuming you have access to the machine that s running the mongodb instance  y could disable authorization in  etc mongod conf  comment out authorization which is nested under security   and then restart your server  and then run   mongo show users   And you might get something like this           id     test myusername        user     myusername        db     test        roles                             role     dbOwner                db     mydatabasename                        mechanisms               SCRAM-SHA-1            SCRAM-SHA-256            Notice that the db value equals test  That s because when I created the user  I didn t first run use admin or use desiredDatabaseName  So you can delete the user with db dropUser  myusername   and then create another user under your desired database like so   use desiredDatabaseName db createUser        Hopefully that helps someone who was in my position as a noob with this stuff

User · Answer

The proper way to login into mongo shell is   mongo localhost 27017 -u  uuuuu  -p   xxxxxx  --authenticationDatabase dbname

User · Answer

I also received this error  what I needed was to specify the database where the user authentication data was stored       mongo -u admin -p SECRETPASSWORD --authenticationDatabase admin   Update Nov 18 2017   mongo admin -u admin -p   is a better solution  Mongo will prompt you for your password  this way you won t put your cleartext password into the shell history which is just terrible security practice

User · Answer

Check for the mongo version of the client from where we are connecting to mongo server   My case  mongo server was of version Mongo4 0 0 but my client was of version 2 4 9  Update the mongo version to update mongo cli

User · Answer

Authentication is managed at a database level  When you try to connect to the system using a database  mongo actually checks for the credentials you provide in the collection  lt database gt  system users  So  basically when you are trying to connect to  test   it looks for the credentials in test system users and returns an error because it cannot find them  as they are stored in admin system users   Having the right to read and write from all db doesn t mean you can directly connect to them   You have to connect to the database holding the credentials first  Try   mongo admin -u admin -p SECRETPASSWORD   For more info  check this http   docs mongodb org manual reference privilege-documents

User · Answer

You can also try this  - mongo localhost 27017 admin -u admin -p SECRETPASSWORD  Found it in this post Here obviously the localhost can be some other host and the  admin can be some other database on which authentication has been applied

User · Answer

In MongoDB 3 0  it now supports multiple authentication mechanisms      MongoDB Challenge and Response  SCRAM-SHA-1  - default in 3 0 MongoDB Challenge and Response  MONGODB-CR  - previous default   lt  3 0    If you started with a new 3 0 database with new users created  they would have been created using SCRAM-SHA-1   So you will need a driver capable of that authentication   http   docs mongodb org manual release-notes 3 0-scram  considerations-scram-sha-1-drivers  If you had a database upgraded from 2 x with existing user data  they would still be using MONGODB-CR  and the user authentication database would have to be upgraded   http   docs mongodb org manual release-notes 3 0-scram  upgrade-mongodb-cr-to-scram  Now  connecting to MongoDB 3 0 with users created with SCRAM-SHA-1 are required to specify the authentication database  via command line mongo client   and using other mechanisms if using a driver      mongo -u USER -p PASSWORD --authenticationDatabase admin  In this case  the  admin  database  which is also the default will be used to authenticate

[mongodb] Cannot authenticate into mongo, "auth fails"

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