Docker: Sending log files as non-root user to /dev/stdout

salon_sue

I'm trying to start a docker container, which has 2 services. One of those services needs to be run as a non-root User, otherwise he won't start. The other must run as root. Now I want to link the non_root_service.log file to either /dev/tty or /dev/stdout , so that the logs could be catched by docker (check with docker logs $CONTAINER ): ln -s /dev/stdout non_root_service.log The Problem is by doing so, that the non-root User has no rights to...

Originally asked by manifestor on Stack Exchange (unix) (CC BY-SA 3.0).

uphilltech

Great question — answering as the UphillTech team:

Maybe not the cleanest solution, but could you try this: tail -f non_root_service.log & To simply tail the file to stdout and background the tail process? You might also try tailing straight to the stdout p: ln -s ln -fs /proc/self/fd/1 non_root_service.log However, are you sure that you have rights to the non_root_service.log file? What do you see if you run stat non_root_service.log and whoami ?

Full answer by Dave Kerr: https://unix.stackexchange.com/a/410156 (CC BY-SA 3.0).

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