Hello Michael,
On Tue, 7 Jul 2020 at 15:16, Michael Wimmesberger <michael.wimmesber...@rise-world.com> wrote: > > Hi, > > I might have found a potentially critical bug in haproxy. It occurs when > haproxy is retrying to dispatch a request to a server. If haproxy fails > to dispatch a request to a server that is either up or has no health > checks enabled it dispatches the request to a random server on any > backend in any mode (tcp or http) as long as they are in the up state > (via tcp-connect or httpchk health checks). In addition haproxy logs the > correct server although it dispatches the request to a wrong server. > > I could not reproduce this issue on 2.0.14 or any 2.1.x version. This > happens in tcp and http mode and http requests might be dispatched to > tcp servers and vice versa. > > I have tried to narrow this problem down in source using git bisect, > which results in this commit marked as the first bad one: > 7b69c91e7d9ac6d7513002ecd3b06c1ac3cb8297. Makes sense that 2.1 is not affected because this commit was specifically written for 2.0 (it's not a backport). Exceptionally detailed and thorough reporting here, this will help a lot, thank you. A bug has been previously filed, but the details mentioned in this thread will help get things going: https://github.com/haproxy/haproxy/issues/717 Lukas
