On 10 April 2018 at 00:04, <flor...@chantret.com> wrote: > Hello everybody, > > For an application, I use haproxy in TCP mode but I would need to log, from > the main load balancer machine, all the TCP transactions (incoming packets > sent to the node then the answer that is sent back from the node to the > client through the haproxy load balancer machine). > > Is it possible to do such a thing ? I started to dig in the ML and found few > information about capturing the tcp-request, which does not work for now... > and I need the response as well... so preferred to ask if someone have got > an experience doing this. Sure, it will have a performance penalty but > exhaustive logging is more important than that and it it the best solution > to avoid a lot of changes in the existing infrastructure we just > load-balanced.
I don't believe this is possible inside haproxy right now. If I *had* to do this, I'd start by saying "no", and then I'd work out how to run a tcpdump process on the machine with carefully tuned filters and a -w parameter. Then I'd drink something strong. J