Kubernetes cannot acess service

Question

Failed to connect to localhost port 80: Connection refused

I recently switched from Windows 10 to Ubuntu 20.04.2 LTS and now I wanted to keep on learning kubernetes. However currently I cannot acess my kubernetes deployment for some reason.

Deployment.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: hello-deployment-c51e9e6b
spec:
  replicas: 2
  selector:
    matchLabels:
      app: hello-kubernetes
  template:
    metadata:
      labels:
        app: hello-kubernetes
    spec:
      containers:
        - image: paulbouwer/hello-kubernetes:1.7
          name: hello-kubernetes
          ports:
            - containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: hello-service-9878228b
spec:
  ports:
    - port: 80
      targetPort: 8080
  selector:
    app: hello-kubernetes
  type: LoadBalancer

I'm pretty sure that this deployment has worked before so I assume that kubernetes has maybe not permissions to expose the port or something like that?

Additional information

• I'm running a minikube cluster.
• Output of kubectl get services: https://imgur.com/klgMiLY

Answer 1

why do you think you can access it via localhost directly?

If you need, please do the port forward , such as:

kubectl port-forward service/hello-service-9878228b 80:80

and you need keeping the console on.

then you should be fine to access it via http://localhost

Answer 2

To expose privileged ports ( < 1024 ), you can give the container the CAP_NET_BIND_SERVICE - see here .

See an example for setting capabilities under K8S Pod security context in here :

apiVersion: v1
kind: Pod
metadata:
  name: security-context-demo-4
spec:
  containers:
  - name: sec-ctx-4
    image: gcr.io/google-samples/node-hello:1.0
    securityContext:
      capabilities:
        add: ["NET_ADMIN", "SYS_TIME"]

Answer 3

You are using a service configuration that is align with a cloud configurations. If no external IPs are provided Kubernetes will try to provision an external TCP LoadBalancer which is available in Cloud Providers. For your configuration provide a external IP that you want to expose the service. This could be IP of a node in the cluster.

https://kubernetes.io/docs/concepts/services-networking/service/

type: LoadBalancer
externalIPs: 
- xxx.xxx.xxx

Answer 4

尝试创建 ClusterIp 服务类型而不是负载均衡器类型，这将使​​您能够从您的 PC 本地访问它。