Haproxy 2.0.6 - nbsrv is not working

[lukastribus]

@Vels456

All the servers in main-backend is down, request is getting failed with 503 since both the servers in main-backend is down

Could you please help in suggesting the changes in this config to make it work so that I can forward the requests to backup-backend ?

I can’t see anything wrong with your configuration on a first glance.

Enable proper logging, reproduce the issue and provide the logs:

How to enable HAProxy Stats Log

You can find the details of the logging system in the documentation, section 8 [1]. As an example, here is a basic logging configuration: global log 127.0.0.1 syslog debug defaults log global mode http option httplog [1] https://cbonte.github.io/haproxy-dconv/1.7/configuration.html#8