Kill tcp connection when any backend gets healthy

Help!
1

Hello HAProxy experts,

I have postgres cluster of 2 nodes behind HAProxy, any of those two can be primary and replica (role is managed by separate system - stolon). I want to force HAProxy to reset tcp connection when primary postgres node comes back. I know there is on-marked-up shutdown-backup-sessions (HAProxy version 2.5.5 - Configuration Manual) which achieves resetting the connection but it has two requirements:

  • It shutdowns down sessions on server marked as backup.
  • It only shutdowns sessions when server which is marked up is not in backup state.

In my setup, since any of the two node can be primary or backup state (i.e. I don’t have static allocation of Node A to be primary and Node B to be replica) I am unable to achieve it by setting on-marked-up shutdown-backup-sessions

Is there any other way i can achieve resetting all backend connections when any of the backend node is marked up.

Any help or pointers will be much appreciated.

Regards,
Pradeep

2

Any pointers to this problem will be much appreciated.