In WordPress it requires me to provide FTP username & password, I tried both FTP & SFTP, use the server ip address instead of domain name, also changed port to 22 but none of these methods works. I wonder why I can access SFTP in Cyberduck but can't in WordPress, please help :)
This happens when WP is trying to update itself and does not have permission to write to the files/folders. One solution is to recursively chown the entire WP install to 'www-data:www-data', update, then chown it back to the previous owner.
