Hi,

lttng-modules exposes its control ABI through the
virtual file /proc/lttng.

Does you container have access to that file ?

Note that if you give access to that file within the
container, then the container can observe detailed
information about kernel internals (including related
to other containers).

Thanks,

Mathieu

On 2024-11-06 02:38, Eibach, Dirk via lttng-dev wrote:
Hi,

I want to do kernel tracing from inside a Docker container. Kernel-tracing works from the host and the modules are loaded. Userspace tracing works inside the container. But when I do "lttng list --kernel" from the container I get "Error: Unable to list kernel events: Kernel tracer not available". Running in the container in priviledged mode makes no difference.

Mit freundlichen Grüßen / Best Regards
Dirk Eibach
_________________________________
CARL CLOOS SCHWEISSTECHNIK GMBH
Softwareentwickler / AU-EW
Softwaredeveloper / AU-EW
Hauptverwaltung/Headquarters: Carl-Cloos-Strasse 1
Zentrallager/Central Warehouse: Carl-Cloos-Strasse 6
35708 Haiger
Germany
Tel:      +49 2773 85-888
E-Mail: mailto:dirk.eib...@cloos.de <mailto:dirk.eib...@cloos.de>
Internet: http://www.cloos.de/ <http://www.cloos.de/>

Sitz der Firma/Headquarters: 35708 Haiger, Germany
Amtsgericht/Lower district court: Wetzlar HR B 3052
UST.-ID-Nr./VAT ID No.: DE 111 79 45 11
WEEE-Reg.-Nr./WEEE-Reg. No.: DE83919745
Geschäftsführer/Management: Stephan Pittner (CEO)

<https://www.linkedin.com/company/carl-cloos-schwei%C3%9Ftechnik-gmbh> <https://www.youtube.com/user/CloosWelding> <https://www.facebook.com/CloosWelding> <https://www.instagram.com/CloosWelding> <https://www.xing.com/profile/carlcloosschweisstechnikgmbh>

CLOOS-Newsletter <https://www.cloos.de/de-de/#newsletter>


--
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com

Reply via email to