AwsInspector\Model\Ec2\Instance::getDefaultUsername PHP Метод

    public function getDefaultUsername()
    {
        if (is_null($this->username)) {
            if ($user = $this->getInspectorConfiguration('user')) {
                $this->username = $user;
            } elseif ($user = $this->getTag('inspector:user')) {
                // deprecated!
                $this->username = $user;
            } elseif ($user = getenv('AWSINSPECTOR_DEFAULT_EC2_USER')) {
                $this->username = $user;
            } else {
                $this->username = 'ec2-user';
                $ami = $this->getImageId();
                if (in_array($ami, ['ami-47a23a30', 'ami-47360a30', 'ami-d05e75b8'])) {
                    $this->username = 'ubuntu';
                }
            }
        }
        return $this->username;
    }

 public function __toString()
 {
     $parts = ['ssh'];
     if ($this->privateKey) {
         $parts[] = '-i ' . $this->privateKey->getPrivateKeyFile();
     }
     if (!is_null($this->jumpHost)) {
         if ($output = Registry::get('output')) {
             /* @var $output OutputInterface */
             $output->writeln("[Using jump host: " . $this->jumpHost->getDefaultUsername() . '@' . $this->jumpHost->getPublicIpAddress() . "]");
         }
         $proxyCommand = new Command($this->jumpHost->getSshConnection(), 'nc %h %p');
         $parts[] = '-o ProxyCommand="' . $proxyCommand->__toString() . '"';
     }
     if ($this->multiplex) {
         $connection = "~/mux_{$this->username}@{$this->host}:22";
         self::$multiplexedConnections[$connection] = "{$connection} {$this->host}";
         $parts[] = "-o ControlPersist=yes -o ControlMaster=auto -S {$connection}";
     }
     $parts[] = '-o ConnectTimeout=5';
     //$parts[] = '-o LogLevel=QUIET';
     $parts[] = '-o StrictHostKeyChecking=no';
     // $parts[] = '-t'; // Force pseudo-tty allocation.
     $parts[] = "{$this->username}@{$this->host}";
     return implode(' ', $parts);
 }