# CRD + CR 생성, Operator 활용
$ kubectl apply -f crd.yaml && kubectl get backups
$ kubectl get crd | grep monitoring.coreos.com # Prometheus Operator
# Helm — Chart 만들고 배포·업그레이드·롤백
$ helm create mychart
$ helm install demo ./mychart -n demo --create-namespace
$ helm upgrade demo ./mychart --set replicaCount=3
$ helm rollback demo 1 -n demo
# Carvel/kapp — 매니페스트 묶음을 state-aware 배포
$ kapp deploy -a my-app -f manifests/