tcpdump for pod controlled by cilium

cdump.sh

#!/bin/bash

# Usage: $0 <pod> [tcpdump-filter]

[[ "$1" == "" ]] && echo "Usage: $0 <pod> [tcpdump-filter]" && exit 1

ep_id=`kubectl get cep -A -o jsonpath="{.items[?(@.metadata.name==\"$1\")].status.id}"`
iface=`cilium endpoint get $ep_id -o jsonpath="{[*].status.networking.interface-name}"`
shift

[[ "$iface" != lxc* ]] && echo "Could not get interface for pod=[$1]" && exit 2

echo "Executing: tcpdump -i $iface $*"
tcpdump -i $iface $*

🚀

FYI: This script will work only within cilium development env.