testcontainers / testcontainers/testcontainers-java
[Bug]: HTTP connection state with podman
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- Langage dominant
- Java
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Description
Module
Core
Testcontainers version
1.18.3
Using the latest Testcontainers version?
Yes
Host OS
Linux
Host Arch
x86
Docker version
❯ docker version
Client: Podman Engine
Version: 4.5.1
API Version: 4.5.1
Go Version: go1.20.4
Built: Fri May 26 17:58:48 2023
OS/Arch: linux/amd64
What happened?
We have been chasing issues between testcontainers and podman where tests would fail on MacOS with
Exception in thread "Thread-0" java.lang.RuntimeException: com.github.dockerjava.zerodep.shaded.org.apache.hc.core5.http.NoHttpResponseException: localhost:2375 failed to respond
or on Linux with
java.lang.RuntimeException: java.io.IOException: Broken pipe
After much head scratching we think we have figured it out as a mismatch between the connection timeout expected by testcontainers-java and the podman API. By default the podman socket is closed after 5s however test containers expects to be able to use the connection for up to 3 mins.
I'm attaching a failing test.
Podman generally expects to be started by systemd in response to data being sent to the socket (via the podman.socket systemd unit) as it is has a demon less execution model. I'm not close enough to the details to understand why the connection fails with a broken pipe instead of re-activating the connection.
My suspicion is that we see different behaviour on MacOS as gvproxy sits in between testcontaienrs and the podman API and thus when the socket goes away it handles the broken pipe differently (possibly stalled waiting for data to come back).
Relevant log output
No response
Additional Information
Podman logs
Passes with time=100: doTheBadThing-time-100-17-07-2023_04:39.log
Fails with time=10: doTheBadThing-time-10-17-07-2023_04:44.log
Test containers debug log from the failing run
Testcase
Test case: DoTheBadThingTest.java.txt
Systemd customisations for changing timeouts
Podman systemd configuration override override.conf.txt which can be applied with systemctl edit --user podman.service && systemctl restart --user podman.service
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Piste de recherche
Commencez par le Core module et le testcase joint DoTheBadThingTest.java.txt, puis examinez podmanTimeout.log ainsi que les Podman logs des exécutions réussies et échouées. Reproduisez le comportement de la connexion avec les paramètres de timeout indiqués sous Linux et vérifiez que le testcase ne produit plus d’erreurs NoHttpResponseException ou Broken pipe avec Podman.
Rédigé par le modèle d'indexation à partir du texte de l'issue.
Évaluation
- Stack technique
- docker, java
- Domaine
- devops, testing
- Type d'issue
- Bug
- Difficulté
- 4/5
- Temps estimé
- 3-5 jours
- Activité
- Calme
- Clarté
- Plutôt claire
- Accessibilité débutants
- 48/100