Kustomize 與 Overlays

Vibe Prompt

「幫我建立 Kustomize 目錄結構：base/（共通設定） + overlays/dev/ + overlays/prod/。」

目錄結構

k8s/
├── base/
│   ├── deployment.yaml
│   ├── service.yaml
│   ├── ingress.yaml
│   └── kustomization.yaml
└── overlays/
    ├── dev/
    │   ├── kustomization.yaml
    │   └── patch-replicas.yaml
    └── production/
        ├── kustomization.yaml
        ├── patch-replicas.yaml
        └── patch-ingress.yaml

base/kustomization.yaml

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
  - deployment.yaml
  - service.yaml
  - ingress.yaml

overlays/production/kustomization.yaml

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
  - ../../base
patches:
  - path: patch-replicas.yaml
  - path: patch-ingress.yaml

overlays/production/patch-replicas.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp
spec:
  replicas: 5

部署

kubectl apply -k k8s/overlays/production
kustomize build k8s/overlays/production  # 預覽