kubernetes list all running pods name

You can use the go templating option built into kubectl to format the output to just show the names for each pod:

kubectl get pods --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}'

Personally I prefer this method because it relies only on kubectl, is not very verbose and we don't get the pod/ prefix in the output:

kubectl get pods --no-headers -o custom-columns=":metadata.name"