Question

这可能是一个愚蠢的问题，但是我如何让我的https://localhost:5000通过我的flask kuberenetes应用程序工作，以确保其返回正确的信息？

这是我到目前为止的工作流程：

$ eval $(minikube docker-env)
$ docker build ...
$ kubectl apply -f deploy.yaml (contains deployment & service)
$ kubectl set image...

kubectl logs...会在下面返回此信息：另外，我的pod已启动并正在运行，因此一切正常

 * Environment: production
   WARNING: Do not use the development server in a production environment.
   Use a production WSGI server instead.
 * Debug mode: on
 * Running on https://0.0.0.0:5000/  (Press CTRL+C to quit)
 * Restarting with stat
 * Debugger is active!
 * Debugger PIN: 443-461-677

唯一的事情是，当我在浏览器中转到该地址时，它说无法访问该网站。当我curl https://localhost:5000或curl https://0.0.0.0:5000/时，出现连接失败错误。我觉得我的环境/设置不正确。有什么提示/建议吗？谢谢！

也继承了我的deploy.yaml文件：

apiVersion: apps/v1beta1 
kind: Deployment
metadata:
  name: myapp
  namespace: test-space
spec:
  selector:
    matchLabels:
      app: myapp
  replicas: 3 
  template: 
    metadata:
      labels:
        app: myapp
    spec:
      containers:
      - name: myapp
        image: myapp
        imagePullPolicy: IfNotPresent
        volumeMounts:
        - name: secret-volume
          mountPath: /etc/secret-volume
        ports: 
        - containerPort: 80
        env:
        - name: "SECRET_KEY"
          value: /etc/secret-volume/secret-key
        - name: "SECRET_CRT"
          value: /etc/secret-volume/secret-crt
      volumes:
        - name: secret-volume
          secret: 
            secretName: my-secret3
---
apiVersion: v1
kind: Service
metadata:
  name: myapp
  namespace: test-space
spec:
  type: NodePort
  selector:
    app: myapp
  ports:
  - protocol: TCP
    port: 80
    targetPort: 5000
    nodePort: 30000

Dockerfile：

FROM python:2

RUN mkdir -p /usr/src/app

WORKDIR /usr/src/app

COPY requirements.txt /usr/src/app/

RUN pip install --no-cache-dir -r requirements.txt

COPY . /usr/src/app

EXPOSE 5000

CMD ["python", "app.py"]

Answer 1

在Dockerfile中公开Port 5000后，您需要在Deployment中的容器中公开同一端口。之后，您需要配置服务以使用此端口。

它应该像这样：

apiVersion: apps/v1beta1 
kind: Deployment
metadata:
  name: myapp
  namespace: test-space
spec:
  selector:
    matchLabels:
      app: myapp
  replicas: 3 
  template: 
    metadata:
      labels:
        app: myapp
    spec:
      containers:
      - name: myapp
        image: myapp
        imagePullPolicy: IfNotPresent
        volumeMounts:
        - name: secret-volume
          mountPath: /etc/secret-volume
        ports: 
        - containerPort: 5000 #<<<PORT FIXED
        env:
        - name: "SECRET_KEY"
          value: /etc/secret-volume/secret-key
        - name: "SECRET_CRT"
          value: /etc/secret-volume/secret-crt
      volumes:
        - name: secret-volume
          secret: 
            secretName: my-secret3
---
apiVersion: v1
kind: Service
metadata:
  name: myapp
  namespace: test-space
spec:
  type: NodePort
  selector:
    app: myapp
  ports:
  - protocol: TCP
    port: 5000 #<<<PORT FIXED
    targetPort: 5000
    nodePort: 30000

之后，您可以在<any-kubernetes-node-IP>:30000上找到您的应用程序

Answer 2

您需要使用标签选择器myapp创建服务。但是还有另一种卷曲的方法通过登录正在运行的吊舱并从吊舱内部执行卷曲。

就做

kubectl exec -it podname / bin / bash这将打开bash shell 然后您可以卷曲localhost：5000

运行flask app kubernetes

2 个答案: