WordPress update issues

Hi,

I'm running a bitnami LAMPstack in AWS and I followed the instructions to install the WordPress module from bitnami. I've done so because I want to install more modules in the same stack, so I believe it is the correct approach. During the installation procss I've selected the DEVELOPMENT option.

Now I want to be able to install and update plugins. As far as I know, vsftp is already installed with the LAMPstack AMI, so I don't have to install it.

The problem is that when I try to update or install plugins, WordPress keeps asking for FTP credentials. I have not been able to find in the official documentation which is the correct method to update and install plugins.

My wp-config.php file is configured like this:

define('FS_METHOD', 'ftpext');
define('FTP_BASE', '/opt/bitnami/apps/wordpress/htdocs/');
define('FTP_USER', 'user');
define('FTP_PASS', '******');
define('FTP_HOST', '127.0.0.1');
define('FTP_SSL', false);

What should I do? :

1. Configure wp-config.php and set FTP-USER and FTP-PASS to be able to update files? I tried that and it did not work.
2. Open the port 21 in the Security Group associated to the AMI?
3. Other options?