How to solve “ptrace operation not permitted” when trying to attach GDB to a process?

Question

I\'m trying to attach a program with gdb but it returns:

Attaching to process 29139
Could not attach to process. If your uid matches the ui

Answer 1

Extra information

If you wanna make changes in the interfaces such as add the ovs bridge, you must use --privileged instead of --cap-add NET_ADMIN.

sudo docker run -itd --name=testliz --privileged --cap-add=SYS_PTRACE --security-opt seccomp=unconfined ubuntu