jsonpathからのecho base64
$ kubectl get secret db-user-pass -o jsonpath='{.data}' {"password":"MWYyZDFlMmU2N2Rm","username":"YWRtaW4="} $ echo 'MWYyZDFlMmU2N2Rm' | base64 --decode 1f2d1e2e67df
https://kubernetes.io/ja/docs/tasks/configmap-secret/managing-secret-using-kubectl/