ubuntu@ip-10-248-81-110:~/downloads/esri/arcgis_server/WebAdaptor$ ls
Documentation Install.htm Setup WebAdaptor
ubuntu@ip-10-248-81-110:~/downloads/esri/arcgis_server/WebAdaptor$ sudo ./Setup
[ArcGIS 10.1 Web Adaptor (Java Platform) Setup Warning]
Unsupported OS found. ArcGIS 10.1 Web Adaptor (Java Platform) supports Red Hat Enterprise Server 5 and 6, and SUSE Linux Enterprise Server 11.
Press Enter to continue anyway...
read: 65: arg count
WARNING: This shell's DISPLAY variable has not been set.
This setup requires a valid display. Please set the DISPLAY
variable to your local UNIX host, or execute this setup
from a UNIX host which has the DISPLAY variable set.
That is correct, Web Adaptor does not support a silent install at 10.1. It will be supported at a subsequent release.
ssh -X will forward the display to local machine, which then must have a valid display.
Also, Web Adaptor is not supported on Ubuntu, as stated in the warning message.
http://123.456.789.123:6080/arcgis/rest/services/mymapservice
http://MyLoadBalancer.aws.com/arcgis/rest/services/mymapservice