The tool is to use the 'tcpdump' to capture the network trace of the pod

1. The access to create privileged pod
2. The access to view the pod you would like to capture

1. Input the "name" of the pod and "namespace" of the pod to the "xxx.json". Example is "example/test.json"
2. Run "./k8sTcpdump -p xxx.json" and it will bring up pods on the corresponding nodes to capture the network traces of the target pods. The '.cap' file will be downoaded to the current folder.