Eh, it's pretty trivial to do. The reason for 2 servers is high availability, not that it is easier in meaningful way. I run something similar on personal site

Eh, it's pretty trivial to do. The reason for 2 servers is high availability, not that it is easier in meaningful way. I run something similar on personal site and it's literally just 2 identical configs but with different port/directory and some haproxy config.