Question

我是k8的新手，并尝试更新StatefulSet中的storageClassName。（从默认值更改为default-t1，仅在yaml中更改）

我尝试运行kubectl apply -f test.yaml

第一和第二Yaml（用于更新）的唯一区别是storageClassName：default-t1而不是default

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: web
spec:
  serviceName: "nginx"
  podManagementPolicy: "Parallel"
  replicas: 2
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: k8s.gcr.io/nginx-slim:0.8
        ports:
        - containerPort: 80
          name: web
        volumeMounts:
        - name: www
          mountPath: /usr/share/nginx/html
  volumeClaimTemplates:
  - metadata:
      name: www
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: default
      resources:
        requests:
          storage: 1Gi

每次尝试更新时，我都会得到The StatefulSet "web" is invalid: spec: Forbidden: updates to statefulset spec for fields other than 'replicas', 'template', and 'updateStrategy' are forbidden

我缺少什么或者应该采取什么步骤？

Answer 1

StatefulSet的第一行应定义一个“ apiVersion”，您可以在此处statefulset看到示例。请在第一行中添加它：

apiVersion: apps/v1

您能告诉我“ www” PVC文件的输出吗？

kubectl get pvc www -o yaml

在PVC中，您有一个字段“ storageClassName”，该字段应在要使用的StorageClass上设置，因此在您的情况下为：

storageClassName: default-t1

Answer 2

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: web
spec:
  serviceName: "nginx"
  podManagementPolicy: "Parallel"
  replicas: 2
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: k8s.gcr.io/nginx-slim:0.8
        ports:
        - containerPort: 80
          name: web
        volumeMounts:
        - name: www
          mountPath: /usr/share/nginx/html
  volumeClaimTemplates:
  - metadata:
      name: www
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: <storage class name>
      resources:
        requests:
          storage: 1Gi

在上面的文件中添加存储类，您可以像这样应用它。

kubectl apply -f .yaml

如何在有状态集中更新storageClassName？

2 个答案: