Kustomize

Kustomize is a standalone tool to customize Kubernetes objects through a kustomization file.

Kustomize/
├── base
│   ├── deployment.yaml
│   ├── kustomization.yaml
│   └── service.yaml
└── qa
    ├── kustomization.yaml
    └── update-replicas.yaml

# build kustomize for show resources before apply
kubectl kustomize path/file
# kustomize apply
kubectl apply -k path/file