Troubleshooting a Kubernetes Network

The netshoot image contains many tools to debug network connectivity.

Use case	Kubernetes Networking
check TCP/IP connectivity	ping
check HTTP connectivity	curl
check the status of the network	kubectl or cilium CLI
capture logs from network	kubectl logs
capture traffic patterns and bandwidth usage	Hubble
analyze network traffic	tcpdump/Wireshark/Hubble
generate traffic for performance testing	iperf

To deploy an ephemeral container:

kubectl debug <pod> -it --image=nicolaka/netshoot -- tcpdump -i eth0