Kubernetes部署文件錯誤：發現v1.PodSpec的無效字段選擇器

Question

當我嘗試使用YAML文件創建我的部署時，出現無效的字段選擇器錯誤。錯誤是error validating data: found invalid field selector for v1.PodSpec，我的文件可以在下面看到。

apiVersion: apps/v1beta1 
kind: Deployment 
metadata: 
name: zalenium-deployment 
spec: 
replicas: 1 
template: 
    metadata: 
    labels: 
    app: zalenium 
    spec: 
    serviceAccountName: zalenium 
    serviceAccount: zalenium 
    selector: 
    app: zalenium 
    role: grid 
    containers: 
    - name: zalenium-pod 
     image: dosel/zalenium 
     ports: 
     - containerPort: 4444 
     protocol: TCP 
     volumeMounts: 
     - name: zalenium-shared 
     mountPath: /tmp/mounted 
     - name: zalenium-videos 
     mountPath: /home/seluser/videos 
     resources: 
     requests: 
     memory: "250m" 
     cpu: "500m" 
     limits: 
     memory: "1Gi" 
    volumes: 
    - name: zalenium-shared 
    persistentVolumeClaim: 
     claimName: zalenium-shared-claim 
    - name: zalenium-videos 
    persistentVolumeClaim: 
     claimName: zalenium-videos-claim 

我一直在使用在線YAML文件驗證嘗試，他們似乎並沒有表現出什麼毛病的格式。當我嘗試使用validate = false標誌創建上面的部署時，部署運行，但是隨後POD不斷崩潰並重新啓動（crashLoopBackOff）。我應該看什麼？我仍然熟悉k8s，但從錯誤我會認爲它與我的部署中的容器規格有關。任何提示接近這個？謝謝！

Answer 1

由於錯誤消息狀態選擇器是invalid field的v1.PodSpec - 所以此字段在.spec.template.spec.selector無效。我認爲你要找的是.spec.selector。

話雖這麼說，在文檔中指出：

If specified, .spec.selector must match .spec.template.metadata.labels, or it will be rejected by the API.

所以還必須添加role: grid到您的元數據標籤（在.spec.template.metadata.labels）。你的.yaml文件看起來像那樣：

apiVersion: apps/v1beta1 
kind: Deployment 
metadata: 
name: zalenium-deployment 
spec: 
selector: 
    matchLabels: 
    app: zalenium 
    role: grid 
replicas: 1 
template: 
    metadata: 
    labels: 
    app: zalenium 
    role: grid 
    spec: 
    serviceAccountName: zalenium 
    serviceAccount: zalenium 
    containers: 
    - name: zalenium-pod 
     image: dosel/zalenium 
     ports: 
     - containerPort: 4444 
     protocol: TCP 
     volumeMounts: 
     - name: zalenium-shared 
     mountPath: /tmp/mounted 
     - name: zalenium-videos 
     mountPath: /home/seluser/videos 
     resources: 
     requests: 
     memory: "250m" 
     cpu: "500m" 
     limits: 
     memory: "1Gi" 
    volumes: 
    - name: zalenium-shared 
    persistentVolumeClaim: 
     claimName: zalenium-shared-claim 
    - name: zalenium-videos 
    persistentVolumeClaim: 
     claimName: zalenium-videos-claim