[k4k4]

Firstly, you don't have to be rude. I won't fall for this bait. Secondly, if you are tied to writing one configuration file, I understand, after all you have a free choice. For me, the separation of logic is a positive aspect, because I don't have to think and search for entries about the specific server I'm proxying to. JSONs used here are overcomplicated I see. And the difficulty of mounting configuration files from ConfigMap with one file or two is practically the same - yet with this software you store two files in ConfigMap. I understood from your post that you are a HAProxy fanatic and I won't bother you in any way.