部署 Yaml 文件

Question

我正在使用 article 作为指南在 minkube 上学习 SQL Server BDC。我尝试通过运行代码来部署以下 yaml 文件：kubectl apply -f deployment.yaml

apiVersion: apps/v1beta1
kind: Deployment
metadata:
  name: mssql-deployment
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: mssql
    spec:
      terminationGracePeriodSeconds: 10
      containers:
      - name: mssql
        image: microsoft/mssql-server-linux
        ports:
        - containerPort: 1433
          securityContext:
          privileged: true
        env:
        - name: ACCEPT_EULA
          value: "Y"
        - name: SA_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mssql
              key: SA_PASSWORD
      volumeMounts:
      - name: mssqldb
        mountPath: /var/opt/mssql
    volumes:
    - name: mssqldb
      persistentVolumeClaim:
        claimName: pvc0001

由于 v1beta1 APIVersion 而出错。我通过运行转换了这个 yaml 文件：kubectl convert -f deployment.yaml 并得到了以下脚本：

apiVersion: apps/v1
kind: Deployment
metadata:
  creationTimestamp: null
  name: mssql-deployment
spec:
  progressDeadlineSeconds: 600
  replicas: 1
  revisionHistoryLimit: 10
  selector: null
  strategy:
    rollingUpdate:
      maxSurge: 25%
      maxUnavailable: 25%
    type: RollingUpdate
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: mssql
    spec:
      containers:
      - env:
        - name: ACCEPT_EULA
          value: "Y"
        - name: SA_PASSWORD
          valueFrom:
            secretKeyRef:
              key: SA_PASSWORD
              name: mssql
        image: microsoft/mssql-server-linux
        imagePullPolicy: Always
        name: mssql
        ports:
        - containerPort: 1433
          protocol: TCP
        resources: {}
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 10
status: {}

但是当我部署上面的脚本时，我得到：

验证“deployment.yaml”时出错：验证数据时出错：ValidationError(Deployment.spec)：io.k8s.api.apps.v1.DeploymentSpec 中缺少必填字段“selector”；如果您选择忽略这些错误，请使用 --validate=false 关闭验证

它与匹配标签/匹配表达式有关，但我无法解决它。有人能指出我正确的方向吗？

Answer 1

您需要在部署的规范部分添加selector。这是一个必填字段。.spec.selector 字段定义了 Deployment 如何找到要管理的 Pod。在这种情况下，您只需选择在 Pod 模板中定义的标签（应用程序：mssql）。然而，更复杂的选择规则是可能的，只要 Pod 模板本身满足规则。

apiVersion: apps/v1
kindapiVersion: apps/v1
kind: Deployment
metadata:
  creationTimestamp: null
  name: mssql-deployment
spec:
  progressDeadlineSeconds: 600
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      app: mssql
  strategy:
    rollingUpdate:
      maxSurge: 25%
      maxUnavailable: 25%
    type: RollingUpdate
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: mssql
    spec:
      containers:
      - env:
        - name: ACCEPT_EULA
          value: "Y"
        - name: SA_PASSWORD
          valueFrom:
            secretKeyRef:
              key: SA_PASSWORD
              name: mssql
        image: microsoft/mssql-server-linux
        imagePullPolicy: Always
        name: mssql
        ports:
        - containerPort: 1433
          protocol: TCP
        resources: {}
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 10
status: {}

Answer 2

io.k8s.api.apps.v1.DeploymentSpec 中缺少必填字段“选择器”

您需要一个选择器来选择将哪些 pod 配置为部署规范。

解决方案：

  selector:
    matchLabels:
      app: mssql
  template:
    metadata:
      labels:
        app: mssql