Issue How to run mysql_secure_installation?

[Azurel]

I tried to run "mysql_secure_installation" command on my server (centOS 8.2) where Obsidian is running but I always get login prompt with "root". In plesk the default db user is admin and not root. This parameters are not working

# mysql_secure_installation -uadmin -p`cat /etc/psa/.psa.shadow`

mysql_secure_installation

Symlink or old name for mariadb-secure-installation.

mariadb.com

installed is

# mysql -V
mysql  Ver 15.1 Distrib 10.3.17-MariaDB, for Linux (x86_64) using readline 5.1