Oh great, just scrolled upwards and read it hasn't been implemented yet.

We use JAAS for authentication and by default it's configured to use a dummy login module which accepts any user whose username is stored in GMS: https://github.com/linkedin/datahub/blob/master/datahub-frontend/conf/jaas.conf#L5 In production setting, you'd change it to something like LdapLoginModule.

Thanks @bumpy-keyboard-50565. 🙂