CODEWITHSUNDEEP
javamongodbadmin
nilkash
nilkash

Reputation: 7536

MongoDB authentication failed

I am doing some experiments with Java and MongoDB. I have successfully install MongoDB and able to connect through command line. But when I try to connect through Java then it gives me error of authentication. I tried in following way:

    nilkash@nilkash-Inspiron-5559:~$ mongo -u admin -p admin123 --authenticationDatabase admin
MongoDB shell version: 3.2.9
connecting to: test
Server has startup warnings: 
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] 
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] 
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
2016-09-17T16:29:31.090+0530 I CONTROL  [initandlisten] 
>

and through Java code:

package mongo;

import java.net.UnknownHostException;
import java.util.Date;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.Mongo;
import com.mongodb.MongoClient;
import com.mongodb.MongoException;

/**
 * Java + MongoDB Hello world Example
 *
 */
public class App {
  public static void main(String[] args) {

    try {

        Mongo mongo = new Mongo("localhost", 27017);
        DB db = mongo.getDB("testdb");

        boolean auth = db.authenticate("admin", "admin123".toCharArray());

    if (auth) {

        System.out.println("Login is successful!");
    } else {
        System.out.println("Login is failed!");
    }
    System.out.println("Done");

    } catch (UnknownHostException e) {
    e.printStackTrace();
    } catch (MongoException e) {
    e.printStackTrace();
    }

  }
}

And got the result for it:

Login is failed!
Done

Is there anything wrong?

Upvotes: 0

Views: 6867

Answers (4)

Juan Choque
Juan Choque

Reputation: 1

This code works

MongoCredential mongoCredential = MongoCredential.createScramSha1Credential(this.username, this.dbname,
                this.password.toCharArray());
        MongoClient mongoClient = new MongoClient(new ServerAddress(dbhost, this.dbport), Arrays.asList(mongoCredential));

Upvotes: 0

Nisarg Patil
Nisarg Patil

Reputation: 1639

Since mongo -u admin -p admin123 --authenticationDatabase admin seems to be working fine from your comment. Change DB db = mongoClient.getDB("testdb"); to DB db = mongoClient.getDB("admin");

Upvotes: 0

notionquest
notionquest

Reputation: 39156

In the latest version of MongoDB 3.2, the default authentication mechanism is "SCRAM-SHA-1". There is a separate class available for this authentication. I would recommend using this latest approach.

For more information, please refer this link.

Example below:-

Just the database name, user name, password accordingly in the below code. It should work for you.

    public static void main(String[] args) {

MongoClient mongoClient = null;
        MongoCredential mongoCredential = MongoCredential.createScramSha1Credential("admin", "admin",
                "admin123".toCharArray());

        mongoClient = new MongoClient(new ServerAddress("localhost", 27017), Arrays.asList(mongoCredential));

        DB db = mongoClient.getDB("testdb");

        System.out.println(db.getStats());
        System.out.println(db.getCollectionNames());

        mongoClient.close();
    }

Dependency:-

<dependency>
    <groupId>org.mongodb</groupId>
    <artifactId>mongo-java-driver</artifactId>
    <version>3.2.2</version>
</dependency>

User Creation:-

use admin;

db.createUser({ user : "admin", pwd : "admin123", roles : ["dbAdmin"]});

To check the user details:-

use admin;

db.getUsers();

Upvotes: 1

Atish
Atish

Reputation: 4417

mongo -u admin -p admin123 --authenticationDatabase admin

You are authenticating to db admin when you try to login using mongo shell. But, in code it looks like you are trying to evaluate your login credentials with db testdb

DB db = mongo.getDB("testdb");

It should be same at both places.

Upvotes: 0

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