Kubernetes - 匹配标签、选择器的范围

Question

我进行了以下部署，

    apiVersion: apps/v1
kind: Deployment
metadata:
  name: hello-deploy
spec:
  replicas: 10
  selector:
    matchLabels:
      app: hello-world
  minReadySeconds: 10
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1
      maxSurge: 1
  template:
    metadata:
      labels:
        app: hello-world
    spec:
      containers:
      - name: hello-pod
        image: nginx:latest
        ports:
        - containerPort: 80

此选择器的范围是否仅适用于由部署管理的 Pod 或具有相同标签的任何 Pod - 我正在尝试了解选择器的范围

Answer 1

Your Deployment selector这里选择带有标签“app: hello-world”的 Pod，它也由您的 Deployment 管理。

总的来说，我引用的是官方文档:

Note: You must specify an appropriate selector and Pod template labels in a Deployment (in this case, app: hello-world). Do not overlap labels or selectors with other controllers (including other Deployments and StatefulSets). Kubernetes doesn’t stop you from overlapping, and if multiple controllers have overlapping selectors those controllers might conflict and behave unexpectedly.