[FR] sharing support for fail2ban, when DMS runs in HAPROXY mode with nginx-ingress in kubernetes

[IvanI3]

Feature Request

Not actually a FR, just sharing my simple script & config if this could be useful for someone...

Context

This is a fail2ban action and some supporting configs, which allow to use fail2ban when docker-mailserver runs in Kubernetes container behing nginx-ingress TCP proxy, using HAPROXY mode.
This setup doesn't allow to use built-in fail2ban with iptables action, because DMS container does't see real IP addresses at TCP level (DMS works in HAPROXY mode). So, one of the way to block annoying IPs - use nginx-ingress resource.

What have you done already?

Action script, configs and instructions are provided here.

[georglauterbach]

I converted your issue into a discussion as this better fits the topic :)