部署调试工具：kubectl apply -f ./network-multitool.yaml

TODO !!! kubernetes 为什么无法 ping 通过容器
Cluster Networking | Kubernetes
Why you can’t ping a Kubernetes Service – Nigel Poulton
coreos – kubernetes service IPs not reachable – Stack Overflow

参考文献

praqma/network-multitool – Docker Image | Docker Hub