In the sense of having two independent instances of Discourse running? Although, as I think about it, I’m not sure why I’d do that. It’s not like I intend to do any development work on Discourse itself.
Never mind, I retract the question. {slightly sheepish grin}
Sam’s blog says to use Ubuntu 12.04LTS, and that 13.10 specifically didn’t work at some point, but the GitHub page says 13.10 is acceptable. My current server is 10.04LTS, and since everything currently on it works, it’s going to stay that way. It’s agony that the 14.04LTS release is a month away, but I don’t think I want to wait that long, so I guess I’ll fire up the spare box and install 12.04 LTS.