$ ./google-cloud-sdk/install.sh
or
$ brew cask install google-cloud-sdk
$ gcloud auth login
$ gcloud container clusters get-credentials spms-cluster --zone us-central1-c --project spring-microservices-350123
$ gcloud config set project <PROJECT_ID>
$ kubectl get nodes
$ kubectl get pods
$ kubectl get deployments
$ kubectl get services
$ kubectl get replicaset
$ kubectl get all
$ kubectl get configmap
$ kubectl apply -f <configmap_file.yml>
outout: configmap/spring-microservice-configmap created
$ kubectl delete configmap <configmap_name>