15.3. 使用多个 Pod 预设置

kind: PodPreset
apiVersion: settings.k8s.io/v1alpha1
metadata:
  name: allow-database
spec:
  selector:
    matchLabels:
      role: frontend 
  env:
    - name: DB_PORT
      value: "6379"
  volumeMounts:
    - mountPath: /cache
      name: cache-volume
  volumes:
    - name: cache-volume
      emptyDir: {}

kind: PodPreset
apiVersion: settings.k8s.io/v1alpha1
metadata:
  name: allow-database
spec:
  selector:
    matchLabels:
      role: frontend 

  env:
    - name: DB_PORT
      value: "6379"
  volumeMounts:
    - mountPath: /cache
      name: cache-volume
  volumes:
    - name: cache-volume
      emptyDir: {}

kind: PodPreset
apiVersion: settings.k8s.io/v1alpha1
metadata:
  name: proxy
spec:
  selector:
    matchLabels:
      role: frontend 
  volumeMounts:
    - mountPath: /etc/proxy/configs
      name: proxy-volume
  volumes:
    - name: proxy-volume
      emptyDir: {}

kind: PodPreset
apiVersion: settings.k8s.io/v1alpha1
metadata:
  name: proxy
spec:
  selector:
    matchLabels:
      role: frontend 

  volumeMounts:
    - mountPath: /etc/proxy/configs
      name: proxy-volume
  volumes:
    - name: proxy-volume
      emptyDir: {}

apiVersion: v1
kind: Pod
metadata:
  name: website
  labels:
    app: website
    role: frontend 
spec:
  containers:
    - name: website
      image: ecorp/website
      ports:
        - containerPort: 80

apiVersion: v1
kind: Pod
metadata:
  name: website
  labels:
    app: website
    role: frontend 

spec:
  containers:
    - name: website
      image: ecorp/website
      ports:
        - containerPort: 80

oc create -f pod.yaml

$ oc create -f pod.yaml

apiVersion: v1
kind: Pod
metadata:
  name: website
  labels:
    app: website
    role: frontend
  annotations:
    podpreset.admission.kubernetes.io/allow-database: "resource version" 
    podpreset.admission.kubernetes.io/proxy: "resource version" 
spec:
  containers:
    - name: website
      image: ecorp/website
      volumeMounts:
        - mountPath: /cache
          name: cache-volume
        - mountPath: /etc/proxy/configs
          name: proxy-volume
      ports:
        - containerPort: 80
      env:
        - name: DB_PORT
          value: "6379"
  volumes:
    - name: cache-volume
      emptyDir: {}
    - name: proxy-volume
      emptyDir: {}

apiVersion: v1
kind: Pod
metadata:
  name: website
  labels:
    app: website
    role: frontend
  annotations:
    podpreset.admission.kubernetes.io/allow-database: "resource version" 

    podpreset.admission.kubernetes.io/proxy: "resource version" 

spec:
  containers:
    - name: website
      image: ecorp/website
      volumeMounts:
        - mountPath: /cache
          name: cache-volume
        - mountPath: /etc/proxy/configs
          name: proxy-volume
      ports:
        - containerPort: 80
      env:
        - name: DB_PORT
          value: "6379"
  volumes:
    - name: cache-volume
      emptyDir: {}
    - name: proxy-volume
      emptyDir: {}