502使用Kubernetes和入口控制器的坏网关

502使用Kubernetes和入口控制器的坏网关,kubernetes,kubernetes-ingress,Kubernetes,Kubernetes Ingress,我在Minikube上安装了Kubernetes,配置如下: --- apiVersion: apps/v1 kind: Deployment metadata: name: myappdeployment spec: replicas: 5 selector: matchLabels: app: myapp template: metadata: labels: app: myapp spec: con

我在Minikube上安装了Kubernetes,配置如下:

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: myappdeployment
spec:
  replicas: 5
  selector:
    matchLabels:
      app: myapp
  template:
    metadata:
      labels:
        app: myapp
    spec:
      containers:
        - name: myapp
          image: custom-docker-image:latest
          ports:
            - containerPort: 3000

---
kind: Service
apiVersion: v1
metadata:
  name: example-service
spec:
  selector:
    app: myapp
  ports:
    - protocol: "TCP"
      # Port accessible inside cluster
      port: 3000
      # Port to forward to inside the pod
      targetPort: 3000
  type: NodePort

---
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: example-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /$1
spec:
  - http:
      paths:
      - path: /
        backend:
          serviceName: example-service
          servicePort: 3000
我查看了解决方案,似乎我的配置是。。好吧

当访问我的Minikube地址时,我得到502坏网关有什么错?
nginx入口控制器
日志显示:

...
Connection refused while connecting to upstream
...
另一个奇怪的信息是,当我在Kubernetes上设置基本节点服务时,一切正常,当我打开Minikube add时,我会看到一个“Hello world”页面,步骤如下: 我跑

然后我访问了
localhost:3000
,看到

This page isn’t working
localhost didn’t send any data.
ERR_EMPTY_RESPONSE
我想原因在日志中更明显,所以我跑了

kubectl logs pods/myappdeployment-5dff57cfb4-6c6bd 
得到

Waiting for MySQL...
no destination
Waiting for MySQL...
no destination
Waiting for MySQL...
no destination
Waiting for MySQL...
no destination
...

因此,我推断我最初得到的是502,因为没有MySQL设置,所以所有的POD都没有运行。

你的应用程序肯定在3000端口上监听吗?如果您使用
kubectl port forward
转发到pod,您是否能够
curl
它好吗?啊,有趣的是,我运行了这个程序,似乎在转发3000->3000时出现了一个错误-我查看了单个pod的日志,似乎缺少MySQL设置,这会阻止pod启动,尽管Kubernetes仪表盘是绿色的,谢谢你!学习了一个新的调试技巧,通过端口转发只需一个podNice,很高兴能帮上忙!如果问题解决了,请考虑给出答案。这将更加明确,对社区其他人更有帮助。
Waiting for MySQL...
no destination
Waiting for MySQL...
no destination
Waiting for MySQL...
no destination
Waiting for MySQL...
no destination
...