Overview API Payload capture is a key tool for troubleshooting. Tcpdump is the tool working at ISO layer 3~6, Many modern API working at Layer 7(HTTP), many capture rules are working only on Layer 7. E.g. filter payload by URL Path is hard for tcpdump: tcpdump -i enp0s8 -s 0 -v -n -l | egrep -i "POST /|GET /|Host:" Old school: tcpdump on minikube(FT) or Node local Below is an example of tcpdump.