The Esri installation instruction has some missing information. For example, setup program is located at /arcgis/portal if you install it from AWS Marketplace.
Run ./createportal.sh -f createportal.properties
Unable to connect to https://172.31.49.200:7443/arcgis/portaladmin. Check the URL and restart the portal if necessary. Exiting the createportal utility.
Portal redirects to internal IP address, which is not accessible from outside.
The 'password' field can only have the numbers 0-9, the ASCII letters a-z, A-Z an\
d the dot character (.).