Hello list, we have a HAProxy cluster in front of some chat-like applications. This HAProxy cluster is dynamically updated and now and then the instances need to be reloaded.
Some of the applications behind this cluster have a few thousand of active users and, every time that the old instance’s hard-stop-after expires, closing the remaining connections, the applications receive an avalanche of reconnections from the clients (usually browsers) almost at the same time. What I’m planning to do is to monitor every old instance and start a `shutdown session` via cli, a few connections at a time, fairly distributing them in the last 25% or so of the remaining time. However maybe someone has a better idea or even pointing to a configuration that does more or less what I’m trying to implement. ~jm
