Kubernetes: 嵌ったYAMLの記述ミス

「-」の付け忘れ

apiVersion: v1
kind: Pod
metadata:
  ...
spec:
  containers:
  - envFrom: # <- editコマンドとかで先頭に追加したとき「-」付け忘れガチ
     - secretRef:
         name: db-secret
    image: kodekloud/simple-webapp-mysql
    imagePullPolicy: Always
    name: webapp
    resources: {}
    terminationMessagePath: /dev/termination-log
    terminationMessagePolicy: File
    volumeMounts:
    - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
      name: kube-api-access-7h9vc
      readOnly: true
  dnsPolicy: ClusterFirst
  enableServiceLinks: true
  nodeName: controlplane
  preemptionPolicy: PreemptLowerPriority

このとき表示されるエラー

controlplane ~ k apply -f  /tmp/kubectl-edit-1562776459.yaml
Error from server (BadRequest): error when creating "/tmp/kubectl-edit-1562776459.yaml": Pod in version "v1" cannot be handled as a Pod: json: cannot unmarshal object into Go struct field PodSpec.spec.containers of type []v1.Container
controlplane ~ 

こっちはarrayじゃなくてもいいとこをarrayにした時

controlplane ~ ➜  k apply -f pv-log.yaml 
Error from server (BadRequest): error when creating "pv-log.yaml": PersistentVolume in version "v1" cannot be handled as a PersistentVolume: json: cannot unmarshal array into Go struct field PersistentVolumeSpec.spec.hostPath of type v1.HostPathVolumeSource