Hello, I'm trying to find a way to dynamically set the maxconn of a server at runtime, and haven't been able to find anything that seems right. I was hoping that maybe I'm missing something, or that someone can suggest an alternative.
I'm using haproxy internally to proxy a microservice. Haproxy runs on the host running the microservice, with a backend containing a single server (localhost, with the microservice port). I like this setup, primarily because I've found that haproxy handles queueing very well with a lot of options. I set a high maxconn on the frontend, a low maxconn on the server and include a queue timeout so that in case the server is overloaded it can return a 503 to the client rapidly. This particular service needs a low server maxconn during the day, when we're okay with lots of 503 errors but really need to avoid over-consuming CPU. During the night, we could set a high maxconn and run the hosts at an extremely high resource utilization. I was hoping to compute maxconn dynamically I was hoping to set the server maxconn with the unix control socket, but it currently seems to only set maxconn for default or for a frontend. Some extra info: — we configure haproxy with chef, but I was hoping to decouple this. Hosted chef is not always available, and sometimes we disable chef-client. Thanks! -- ---- e s
