After your first login:
From version 18.03 onwards, the Flussonic installer . Instead, the initial authentication is tied to the system’s UNIX user account. flussonic admin ui default password
Let me save you the trouble:
If you are currently running a Flussonic server, verify your configuration today. If you have admin with a blank password, assume your server is compromised until you secure it. After your first login: From version 18