Unable to strace tini's children processes
filipdavidovic opened this issue · comments
Hi,
I am trying to profile containers using strace
. The command I use is: strace -ff -o /log/trace.log tini -- /entrypoint-wrapper.sh /original-entrypoint.sh
(note -ff
which follows fork
calls). As you can imagine, /entrypoint-wrapper.sh
calls /original-entrypoint.sh
using an exec
call. Both of the scripts are Bash.
Looking at the output of the command, I can see strace
attaching only to the tini process, but to none of its children. Moreover, the /log
directory contains only a single log file for the tini process. The file has a bunch of wait4
and rt_sigtimedwait
, which I imagine to be signal handling calls used by tini.
Running the above command without tini works as expected. How can I strace
tini's children?
Thank you!
I wonder if the -g
flag would help here?
strace -ff -o /log/trace.log tini -g -- /entrypoint-wrapper.sh /original-entrypoint.sh