traefik: Problem with text/event-stream when compress=true

Any update on this? The problem still continues for me on concourse helm chart: concourse-3.0.1 | traefik-1.56.1.

@camelpunch Thank you for sending us the steps to reproduce the issue, but we already knew how to reproduce it thanks to @Overbryd !

The issue is not related to concourse at all in fact, it simply happens with the combination of compressed entrypoints and HTTP streams.

We know what the issue is, but we have not yet decided how to handle it, we’ll let you know when we do know.

In the meantime, the only workaround is to either disable compression or avoid using streams, as far as I know.

this is crazy… I just reproduced it on a brand new debian:9 box

The exact config files are right here…

• https://github.com/starkers/snippets/tree/master/traefik-concourse

Its currently running if you’d like to test although I may switch it to http mode to quickly check

fly -t ci login -c http://bot.deltashim.com

edit: I wonder if because I have docker-compose v 2 there it’ll make a difference?

edit2: I logged in on :80 and it works perfectly there!! but not over https

edit3: omg its working on both now… all I did was some restarts and remove the http>https redirect. With the redirect back in its working on https again… what the heck is going on… going to do some more tests including removing networks/volumes between tests

I’ve noticed when I’ve disabled compression on https endpoint, the issue disappeared

data:
  traefik.toml: |
    # traefik.toml
    logLevel = "DEBUG"
    defaultEntryPoints = ["http","https"]
    [entryPoints]
      [entryPoints.http]
      address = ":80"
      compress = false
        [entryPoints.http.redirect]
          regex = "^http://(.*)"
          replacement = "https://$1"
      [entryPoints.https]
      address = ":443"
      compress = false
        [entryPoints.https.tls]
          [[entryPoints.https.tls.certificates]]
          CertFile = "/ssl/tls.crt"
          KeyFile = "/ssl/tls.key"
      [entryPoints.traefik]
      address = ":8080"
    [kubernetes]
    [api]
      entryPoint = "traefik"
      dashboard = true

Kubernetes 1.10.8 (minikube) Traefik 1.6.6 (helm chart stable/traefik 1.43.0) Concourse 3.14.1 (helm chart stable/concourse 1.3.1)

Encountered this issue today. Same as in previous posts - stuck on “events” API call. Traefik 1.7.0, Concourse 4.2.1.

I just ran into this issue. For what its worth, I think the size of the payload makes a difference. When I have less than 100 bytes, it shows no data. But when the payload grows bigger then the data shows up.

@Ullaakut all correct. Mind the trailing slash on your request. It should be curl --compressed localhost:8080/events/.

I have the same with traefik 1.6.2 with acme concourse 3.14.1 both installed from stable Helm charts.

The setup is pretty similar to others, but if I can help somehow (logs, testing some new version) - let me know 😉

@emcniece I was certain I’d be able to reproduce this easily with docker-compose but then I tried and disturbingly it just always worked… I even went the route of host networking for traefik to be sure. I can see why you were so frustrated in your tests

I am pretty sure (when I have the time this week) that I can reproduce it by putting https on the frontend of a docker-compose for u.

The first time I encountered this issue was when I hand-rolled a deployment on a single instance and used docker-compose to flesh out what I needed… naturally I used traefik+acme ssl but I thought it was concourse that was faulty…

It was only later with k8s also that I isolated it the cause to be traefik. I switched ingress controllers and that sorted the issue. (although I’m not happy about a life without traefik)

TL;DR: The only common thread that I can think of now is having https on the frontend

@abellion, I’m not enable to reproduce, if you have a more reproducible case, I can’t try again.

I tried with concourse 3.9.2. I follow https://concoursetutorial.com/ and https://concoursetutorial.com/basics/task-hello-world/ to install my concourse and create a build.

Then I launched a Traefik 1.5.4 (https://github.com/containous/traefik/releases/download/v1.5.4/traefik_linux-amd64) with this config:

defaultEntryPoints = ["http"]

[entryPoints]
  [entryPoints.http]
  address = ":8081"

[file]
  [frontends.frontend-test]
    backend = "backend-test"
  [frontends.frontend-test.routes.test_1]
  rule = "Host:127.0.0.1"
  [backends]
    [backends.backend-test]
        [backends.backend-test.servers.website]
            url = "http://127.0.0.1:8080"

And everythings seems to work on http://127.0.0.1:8081/builds/1

my working Concourse version is 3.8.0. I’m currently running Traefik 1.5.3