Depending on what auth method you chose, the answers may (or may not) vary. I have settings in
/etc/ood/config/apps/dashboard/env
that include
OOD_DASHBOARD_HEADER_IMG_LOGO=/public/header.png
which displays /var/www/ood/public/header.png. That file has a branding image.
I also have
OOD_ANNOUNCEMENT_PATH="/etc/ood/config/announcement.yml"
which allows me to put messages in yaml format to display on the landing page, e.g., on my dev system
type: warning
msg: |
This is OnDemand Dev - a development and test server; nothing is safe here.
This is covered (mostly) in the Branding Section of the docs as I remember it. Also check out
/var/www/ood/apps/sys/dashboard/config/examples/…
as you may get some more ideas from the various examples there.
Cheers,
Ric