Accessing Plesk Server via Domain Specific FTP Users

Question

Hello I created a Plesk server, and while it seems I can create FTP users in Plesk I cannot login with these users. It appears the Plesk Server is configured to only login with a Key.  I have the master key for my main FTP account, but when I use it for the domain specific FTP account it gives me an error. Is there a way to generate a new key specific for these FTP users that are created in Plesk?  
  
Here is the error:  
  
Error: FATAL ERROR: No supported authentication methods available (server sent: publickey)  
Error: Could not connect to server  
  
I attempted to login with the default key and I get the same error. Is there a way to get a key for these additional users?  
  
When I opened port 21 for FTP traffic and attempt to login with FTP over TLS, I receive this error:  
  
Status: Retrieving directory listing...  
Command: PWD  
Response: 257 "/" is the current directory  
Command: TYPE I  
Response: 200 Type set to I  
Command: PASV  
Response: 227 Entering Passive Mode (***********).  
Command: MLSD  
Error: The data connection could not be established: ETIMEDOUT - Connection attempt timed out  
Error: Connection timed out after 20 seconds of inactivity  
Error: Failed to retrieve directory listing

Answer

Hi,  
  
Thanks for using Lightsail!  I recommend taking a quick look at our documentation regarding how to configure Plesk:   
https://lightsail.aws.amazon.com/ls/docs/en_us/articles/set-up-and-configure-plesk-stack-on-lightsail.  
  
For additional configuration help, you can take a look on Plesk site:   
https://docs.plesk.com/en-US/onyx/deployment-guide/plesk-installation-and-upgrade-on-public-cloud-services/installing-plesk-on-amazon-lightsail.79028/   
and   
https://docs.plesk.com/en-US/onyx/deployment-guide/plesk-installation-and-upgrade-on-single-server/plesk-single-server-postinstall-configuration.76454/  
  
If you are still running into trouble, we can definitely help take a look.

Answer

Hi Davidly,  
  
Thank you for the response! But I don't think this issue is covered in any of the resources.   
  
I'm surprised I cannot find anything on this because it seems pretty straightforward. Lightsail appears to configure the plesk server to login with the ubuntu user with the SSH key. However, when I create an FTP user in Plesk for a specific domain, i can't find anyway to login with that user. The password I create doesn't work as it appears from the error that it is asking for the key. But the main SSH Key Lightsail provides doesn't work.  
  
I could change the permissions for the ubuntu user to own the folder paths to these domains, but for what I am doing i would much rather use the FTP user that is created by plesk when i add the domain.   I feel like I'm the first one to try to do this, none of the tuturorials i've found on Udemy or Youtube go over how to do this.

Answer

Answer is here:   
  
https://support.plesk.com/hc/en-us/articles/213922245-System-users-are-not-able-to-connect-to-a-Plesk-server-over-SSH-SFTP-No-supported-authentication-methods-available

Accessing Plesk Server via Domain Specific FTP Users

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