I run Discourse on my own AWS account and it runs on Ubuntu EC2, ElastiCache Redis, and RDS Postgress.
It ran well when using discourse 1.5 and I upgraded to 1.6.
Before: v1.5.0.beta13b +140 After: 1.6.0.beta1
After upgrading to 1.6 using
# launcher rebuild app, the web browser cannot display ant pages. Here is the screenshot of Chrome Developer Tool: