Kubernetes:当使用“最新"版本时，kubectl apply不会更新pod.标签 [英] Kubernetes: kubectl apply does not update pods when using "latest" tag

问题描述

我正在使用kubectl apply更新我的Kubernetes吊舱:

I'm using kubectl apply to update my Kubernetes pods:

kubectl apply -f /my-app/service.yaml
kubectl apply -f /my-app/deployment.yaml

以下是我的service.yaml:

Below is my service.yaml:

apiVersion: v1
kind: Service
metadata:
  name: my-app
  labels:
    run: my-app
spec:
  type: NodePort
  selector:
    run: my-app 
  ports:
  - protocol: TCP
    port: 9000
    nodePort: 30769

下面是我的deployment.yaml:

Below is my deployment.yaml:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-app
spec:  
  selector:
    matchLabels:
      run: my-app
  replicas: 2
  template:
    metadata:
      labels:
        run: my-app
    spec:
      containers:
      - name: my-app
        image: dockerhubaccount/my-app-img:latest
        ports:
        - containerPort: 9000
          protocol: TCP
      imagePullSecrets:
      - name: my-app-img-credentials
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 25%
      maxSurge: 25%

第一次运行良好，但是在随后的运行中，我的广告连播没有得到更新.

This works fine the first time, but on subsequent runs, my pods are not getting updated.

我在 https://github.com/kubernetes/kubernetes/上阅读了建议的解决方法issues/33664 ，即:

kubectl patch deployment my-app -p "{\"spec\":{\"template\":{\"metadata\":{\"labels\":{\"date\":\"`date +'%s'`\"}}}}}"

我能够运行以上命令，但无法为我解决问题.

I was able to run the above command, but it did not resolve the issue for me.

我知道我可以通过手动将image标签从"latest"更改为另一个标签来触发pod更新，但是我想确保无需检查Docker Hub就能获得最新的image.

I know that I can trigger pod updates by manually changing the image tag from "latest" to another tag, but I want to make sure I get the latest image without having to check Docker Hub.

任何帮助将不胜感激.

推荐答案

结果是我误解了我从链接中给出的解决方法命令.

Turns out I misunderstood the workaround command I gave from the link.

我认为这是一次配置我的部署的命令，可以将以后所有的kubectl apply命令都视为更新我的Pod的触发器.

I thought it was a one-time command that configured my deployment to treat all future kubectl apply commands as a trigger to update my pods.

实际上，每次我要更新Pod时，我都只需要运行命令:

I actually just had to run the command every time I wanted to update my pods:

kubectl patch deployment my-app -p "{\"spec\":{\"template\":{\"metadata\":{\"labels\":{\"date\":\"`date +'%s'`\"}}}}}"

非常感谢所有帮助过的人！

Many thanks to everyone who helped!

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