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Subject: [bug#77578] [PATCH] tests: docker-system: Use only guix-daemon service.
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The test run-docker-system-test was hanging on:

(docker-cli "exec" container
             "/run/current-system/profile/bin/herd"
             "status")

This occurred because %test-docker-system specified more services than
gnu/system/examples/docker-image.tmpl, which may have caused conflicts or
unexpected behavior.

* gnu/tests/docker.scm (%test-docker-system): Simplify by using only the
guix-daemon service to prevent test hangs.

Change-Id: I2c3f7bc54fa6b5a802c8e16cba6ffae0cd09d4cc
---
 gnu/tests/docker.scm | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gnu/tests/docker.scm b/gnu/tests/docker.scm
index 90c8d0f850..e528064c2b 100644
--- a/gnu/tests/docker.scm
+++ b/gnu/tests/docker.scm
@@ -26,6 +26,7 @@ (define-module (gnu tests docker)
   #:use-module (gnu system image)
   #:use-module (gnu system vm)
   #:use-module (gnu services)
+  #:use-module (gnu services base)
   #:use-module (gnu services dbus)
   #:use-module (gnu services networking)
   #:use-module (gnu services docker)
@@ -345,7 +346,9 @@ (define %test-docker-system
                                    (inherit (simple-operating-system))
                                    ;; Use locales for a single libc to
                                    ;; reduce space requirements.
-                                   (locale-libcs (list glibc)))
+                                   (locale-libcs (list glibc))
+                                   ;; Guix is all you need!
+                                   (services (list (service guix-service-type))))
                                  #:type docker-image-type)))
                  run-docker-system-test)))))

-- 
2.47.1

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To: Oleg Pykhalov <go.wigust@HIDDEN>
Subject: bug#77578: Acknowledgement ([PATCH] tests: docker-system: Use
 only guix-daemon service.)
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Subject: [bug#77578] [PATCH] tests: docker-system: Use only guix-daemon service.
Resent-From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
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From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
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Date: Tue, 08 Apr 2025 17:20:56 +0200
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Oleg Pykhalov <go.wigust@HIDDEN> skribis:

> The test run-docker-system-test was hanging on:
>
> (docker-cli "exec" container
>              "/run/current-system/profile/bin/herd"
>              "status")
>
> This occurred because %test-docker-system specified more services than
> gnu/system/examples/docker-image.tmpl, which may have caused conflicts or
> unexpected behavior.
>
> * gnu/tests/docker.scm (%test-docker-system): Simplify by using only the
> guix-daemon service to prevent test hangs.

Hi! It=E2=80=99s not clear to me why =E2=80=98herd status=E2=80=99 was bloc=
king in the first
place=E2=80=94it=E2=80=99s never supposed to happen.  Do you have ideas?

Thanks,
Ludo=E2=80=99.

Message sent to guix-patches@HIDDEN:

Subject: [bug#77578] [PATCH] tests: docker-system: Use only guix-daemon service.
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From: Oleg Pykhalov <go.wigust@HIDDEN>
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 <871pu24r3b.fsf@HIDDEN>
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--=-=-=
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Hi Ludovic,

Thank you for review.

Ludovic Court=C3=A8s <ludo@HIDDEN> writes:

> Oleg Pykhalov <go.wigust@HIDDEN> skribis:
>
>> The test run-docker-system-test was hanging on:
>>
>> (docker-cli "exec" container
>>              "/run/current-system/profile/bin/herd"
>>              "status")
>>
>> This occurred because %test-docker-system specified more services than
>> gnu/system/examples/docker-image.tmpl, which may have caused conflicts or
>> unexpected behavior.
>>
>> * gnu/tests/docker.scm (%test-docker-system): Simplify by using only the
>> guix-daemon service to prevent test hangs.
>
> It=E2=80=99s not clear to me why =E2=80=98herd status=E2=80=99 was blocki=
ng in the first
> place=E2=80=94it=E2=80=99s never supposed to happen.  Do you have ideas?

The docker create command creates a container with a limited set of
privileges by default. These default privileges are insufficient for
certain configuration tasks such as networking setup or hostname
configuration.

Guix inside the container attempts to configure networking itself,
whereas containerd and other container runtimes typically handle
networking internally or with the help of CNI (Container Network
Interface). I don=E2=80=99t think Guix should configure networking by defau=
lt in
containers, as this is already managed by the runtime.

Adding the --privileged flag to docker create may allow the test to
pass, note that herd status will report a failure for the 'loopback'
service (though this is non-blocking and won't prevent the test from
passing).

Regards,
Oleg.

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From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
In-Reply-To: <877c3kqkl3.fsf@HIDDEN> (Oleg Pykhalov's message of "Wed, 16
 Apr 2025 16:53:12 +0300")
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Hi Oleg,

Oleg Pykhalov <go.wigust@HIDDEN> writes:

> Ludovic Court=C3=A8s <ludo@HIDDEN> writes:
>
>> Oleg Pykhalov <go.wigust@HIDDEN> skribis:
>>
>>> The test run-docker-system-test was hanging on:
>>>
>>> (docker-cli "exec" container
>>>              "/run/current-system/profile/bin/herd"
>>>              "status")
>>>
>>> This occurred because %test-docker-system specified more services than
>>> gnu/system/examples/docker-image.tmpl, which may have caused conflicts =
or
>>> unexpected behavior.
>>>
>>> * gnu/tests/docker.scm (%test-docker-system): Simplify by using only the
>>> guix-daemon service to prevent test hangs.
>>
>> It=E2=80=99s not clear to me why =E2=80=98herd status=E2=80=99 was block=
ing in the first
>> place=E2=80=94it=E2=80=99s never supposed to happen.  Do you have ideas?
>
> The docker create command creates a container with a limited set of
> privileges by default. These default privileges are insufficient for
> certain configuration tasks such as networking setup or hostname
> configuration.

Oh I see.  Then, what about changing the patch to (1) specifically
remove the one or two services that are problematic, and (2) have the
above in a comment?

Thanks for explaining,
Ludo=E2=80=99.

PS: Would be great to have support for CNI and all this!

Last modified: Wed, 16 Apr 2025 16:30:07 UTC

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