Hello guys, I have a case where I need that haproxy to fallback on other backend if it recieve a custom http error code.
This happen during the upgrade process of our platform (schema upgrade), composed with fronts & api servers, at the moment when a callback request arrives on a front which have a new version and is not able to talk with an old version api / databases servers. I want to know if, in this case by receiving a custom http error, it is possible that haproxy (http mode) to fallback on an other front ? maybe with LUA ? Many thanks, Sébastien W.
