get / --prefix --keys-only | grep kubecon /registry/apiextensions.k8s.io/customresourcedefinitions/sessions.kubecon.io /registry/apiregistration.k8s.io/apiservices/v1.kubecon.io /registry/kubecon.io/sessions/eu2018/api-machinery $ etcdctl get /registry/kubecon.io/sessions/eu2018/api-machinery {"apiVersion":"kubecon.io/v1","kind":"Session","metadata":{"clusterName":""," creationTimestamp":"2018-04-29T20:30:27Z","generation":1,"name":"api- machinery","namespace":"eu2018","resourceVersion":"","selfLink":"","uid":"273 a1ae3-4bec-11e8-8d91-4c3275978b79"},"spec":{"capacity":10,"title":"SIG API Machinery Deep Dive","type":"deepdive"},"status":{"attendees":10,"conditions":[{"lastTransit ionTime":"2018-05-04T12:47:54Z","status":"True","type":"Started", "someUnknownField":"someValue", "someFutureField":"dangerous value"}]}} unverified JSON blob with possibly unspecified fields we need pruning! Kube 1.11+