debugging.md

Debugging techniques

TCPDUMP

tcpdump -i eth0 -s 1024 -A

Shows only packets from eth0, size of packet is 1024, -A prints ascii.

TCPDUMP and Docker for Mac

1. Create a privileged container

docker run -it --pid=host --net=host --privileged ubuntu

2. Install tcpdump

apt-get update && apt-get install -y tcpdump

3. TCPDUMP it

tcpdump -i eth0 -s 1024 -A

4. Run another container

docker run -it t=host ubuntu