Documentation issue with the Director UI
In section 6.1 of the DIRECTOR INSTALLATION AND USAGE guide it states:
Users access the director’s web UI through SSL. For example, if the IP address of your undercloud is 192.168.24.1, then the address to access the UI is https://192.168.24.1.
But by default the director web UI runs on port 3000 so it'd be http://192.168.21.1:3000/