MongoDB PHP Driver Fails to Connect and Authenticate - php

Question

I have set up for the first time the authentication for MongoDB. I have two users: 'admin', (set as root in the 'admin' database) and 'testUser' which is set up as 'dbAdmin' in the 'testDatabase'.
When I use mongo shell to login using the following command everything works:
mongo -u testUser -p abcd1234 --authenticationDatabase testDatabase
On the PHP's end, I have the following code:
<?php
class DBConnection {
const HOST = '1.1.1.1';
const PORT = 27017;
const DBNAME = 'testDatabase';
const USERNAME = 'testUser';
const PASSWORD = 'abcd1234';
private static $instance;
public $connection;
public $database;
private function __construct() {
if (!extension_loaded('mongo')) die("MongoDB is not installed!");
try {
$this->connection = new MongoClient('mongodb://'.self::HOST.':'.self::PORT.'/'.self::DBNAME, array('username' => self::USERNAME, 'password' => self::PASSWORD));
$this->database = $this->connection->selectDB(self::DBNAME);
} catch (MongoConnectionException $e) {
throw $e;
}
}
static public function instantiate() {
if (!isset(self::$instance)) {
$class = __CLASS__;
self:: $instance = new $class;
}
return self::$instance;
}
public function getCollection($name) {
return $this->database->selectCollection($name);
}
public function execute($code) {
return $this->database->execute($code);
}
}
?>
Naturally, host (as well as the db name, username and password) are obfuscated. I have verified multiple time that there is not a typo in the credentials. I have also verified that I can connect to the database from a remote shell, similar to how this script connects.
Still, I always get this error:
PHP Fatal error: Uncaught exception 'MongoConnectionException' with
message 'Failed to connect to: 1.1.1.1:27017: Authentication
failed on database 'testDatabase' with username 'testUser': auth failed' in
/var/www/html/wip/include/mongoConnect.php:17 Stack trace:
0 /var/www/html/wip/include/mongoConnect.php(17): MongoClient->__construct('mongodb://1.1...', Array)
1 /var/www/html/wip/include/mongoConnect.php(27): DBConnection->__construct()
2 /var/www/html/wip/migration/migrate.php(85): DBConnection::instantiate()
3 {main} thrown in /var/www/html/wip/include/mongoConnect.php on line 17
Credentials for both users are in SCRAM-SHA-1.
Any idea what is causing this connection issue?

Answer 1

You can try to change the way of logging in
$m = new MongoClient("mongodb://${username}:${password}#localhost");
Take a look at here:
http://php.net/manual/en/mongo.connecting.auth.php