Frontend URL Set, but "Page not found"

Hi all,

I’m trying to set up Keycloak in domain clustered mode.

I’ve set the bind addresses to be the IP of each server for the host-master.xml and host-slave.xml.
I’m able to access the management console via:

From there, I’m able to get the URL for each server, eg:

I head to that URL, hit the 'Administration Console" link, and it redirects me to something like:

This gives me:

We are sorry…

Page not found`

I’ve set the frontendUrl property in domain.xml to be something like:
<property name="frontendUrl" value=""/>

I’ve also tried hitting:
And I’ve tried creating an ssh tunnel and hitting:

None of which appear to get me there.

Any advice would be appreciated.

Thank you.