Hi there!
I have instaled ArcGIS Enterprise using AWS Ubuntu AIM, after install I just upgrade to 10.7 and register the server, datastore and portal.
For now I have two questions.
1. How I have to configure webadaptor in a Ubuntu configuration? This is the folder webadaptor content after the instalation.
I have tryed the configurewebadaptor.sh in tools folder, but I am reall confuse about how to configure the webadaptor.

2. I can access using RDP to connect to my ubuntu server the portal site but only with this url
https://127.0.0.1:7443/arcgis/home

But the portal looks like incomplete.
Also, I have configured a load balancer and add my ArcGis server with 6443 and 7443 ports to my Target group.
When I access to my load balancer dns using 6443 port works like a charm, however to port 7443, always redirect to 127.0.0.1, so it does not keep my dns, I asume this is because my webadaptor is not configured.
If any of you have suggestios, please let me know. 
Thanks