Did you look at pam_mysql

[bonelifer]

It would seem much easier to use vsftpd with pam_mysql for username/password storage as it'd then be as simple as using mysql-client with a query to add users, change passwords and delete users. I see from your comments in the shell scripts, you too find the load_db method as horrid as I do. It's like devops and ftp deployers for the last decade or more have been possibly hiding the needed info to programmatically delete old users. LOL. 😞 I'm in the process of trying to understand Dockerfiles and adding some functionality to one (vsftpd +pam_mysql)I found on github, that was never published as a container. Your shell scripts will definately help in management, just need to change out to use mysql-client.