如何使用kubernetes进行"kubectl应用"?不更新现有部署 [英] How to kubernetes "kubectl apply" does not update existing deployments

问题描述

我有一个.NET核心的Web应用程序.这已部署到Azure容器注册表.我使用

I have a .NET-core web application. This is deployed to an Azure Container Registry. I deploy this to my Azure Kubernetes Service using

kubectl apply -f testdeployment.yaml

kubectl apply -f testdeployment.yaml

带有下面的yaml文件

with the yaml-file below

apiVersion: apps/v1
kind: Deployment
metadata:
  name: myweb
spec:
  replicas: 1
  selector:
    matchLabels:
      app: myweb
  template:
    metadata:
      labels:
        app: myweb
    spec:
      containers:
      - name: myweb
        image: mycontainerregistry.azurecr.io/myweb:latest
        ports:
        - containerPort: 80
      imagePullSecrets:
        - name: my-registry-key

这很出色，但是当我更改一些代码时，将新代码推送到容器中并运行

This works splendid, but when I change some code, push new code to container and run the

kubectl应用-f测试部署

kubectl apply -f testdeployment

同样，直到我使用以下方式删除部署后，AKS/网站才会更新:

again, the AKS/website does not get updated, until I remove the deployment with

kubectl删除部署myweb

kubectl remove deployment myweb

我应该怎么做才能使其覆盖已部署的内容?我想在yaml文件中添加一些内容. (我试图将其用于Azure DevOps中的连续交付).

What should I do to make it overwrite whatever is deployed? I would like to add something in my yaml-file. (Im trying to use this for continuous delivery in Azure DevOps).

推荐答案

我相信您正在寻找的是imagePullPolicy.默认值为ifNotPresent，这表示将不会提取最新版本.

I believe what you are looking for is imagePullPolicy. The default is ifNotPresent which means that the latest version will not be pulled.

https://kubernetes.io/docs/concepts/containers/images/

apiVersion: apps/v1
kind: Deployment
metadata:
  name: myweb
spec:
  replicas: 1
  selector:
    matchLabels:
      app: myweb
  template:
    metadata:
      labels:
        app: myweb
    spec:
      containers:
      - name: myweb
        image: mycontainerregistry.azurecr.io/myweb
        imagePullPolicy: Always
        ports:
        - containerPort: 80
      imagePullSecrets:
        - name: my-registry-key

要确保已重新创建Pod，请运行:

To ensure that the pod is recreated, rather run:

kubectl delete -f testdeployment && kubectl apply -f testdeployment

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