[FIXED] microk8s Kubernetes Service connection refused

Issue

I have a simple restful django project that return 'hello world' when you GET localhost:8000. I want to run it using microk8s. Using following instruction (https://microk8s.io/docs/registry-images) i created the image and apply my yaml file

yaml file:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: hello-deployment
  labels:
    app: hello
spec:
  selector:
    matchLabels:
      app: hello
  template:
    metadata:
      labels:
        app: hello
    spec:
      containers:
      - name: hello
        image: hello1:local
        imagePullPolicy: Never
        ports:
        - containerPort: 8000
---
apiVersion: v1
kind: Service
metadata:
  name: hello
spec:
  selector:
    app: hello
  ports:
  - name: hello
    port: 8000
    protocol: TCP
    targetPort: 8000

The pod is running properly.

NAME                                    READY   STATUS    RESTARTS   AGE
pod/hello-deployment-6567ccc4f7-7j6nj   1/1     Running   0          61m

NAME                 TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)          AGE
service/hello        ClusterIP   10.152.183.241   <none>        8000/TCP         59m

but when i want to access the 10.152.183.241:8000 nothing works.

I also connect to pod by following command

microk8s kubectl exec -it hello-deployment-6567ccc4f7-7j6nj -- bash

then install curl and test these:

root@hello-deployment-6567ccc4f7-7j6nj:/code# curl localhost:8000
Hello World
root@hello-deployment-6567ccc4f7-7j6nj:/code# curl 10.152.183.241:8000
curl: (7) Failed to connect to 10.152.183.241 port 8000: Connection refused

Obviously the program is running but there is a problem with kubernetes service. what's wrong with my yaml file?

Update 1: found that image file have problem and it's work with other images. still don't know what is the problem.

my Dockerfile:

FROM python:3
WORKDIR /code
COPY requirements.txt /code/
RUN pip install -r requirements.txt
COPY . /code/
CMD python3 manage.py runserver
EXPOSE 8000

Solution

Django doesn't respond.

change

CMD python3 manage.py runserver

with

CMD python3 manage.py runserver 0.0.0.0:8000

also add 0.0.0.0 to ALLOWED_HOSTS.

Answered By - M.Dara