Konvert not publishing port

General Discussions
1

Hi there, I tried to convert a docker-compose file via konvert with ports, but it seems it does not expose and publish ports.

Here is my simple docker-compose.yml:

version: '3'

services:
	nginx:
		image: nginx
		container_name: nginx
		hostname: nginx
		ports:
			- '80:80'

And when I convert them, I see the below deployment and service yaml files as follows.

deployment contents:

apiVersion: apps/v1
kind: Deployment
metadata:
  annotations:
    kompose.cmd: kompose convert
    kompose.version: 1.22.0 (955b78124)
  creationTimestamp: null
  labels:
    io.kompose.service: nginx
  name: nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      io.kompose.service: nginx
  strategy: {}
  template:
    metadata:
      annotations:
        kompose.cmd: kompose convert
        kompose.version: 1.22.0 (955b78124)
      creationTimestamp: null
      labels:
        io.kompose.service: nginx
    spec:
      containers:
        - image: nginx:alpine
          name: nginx
          ports:
            - containerPort: 80
          resources: {}
      hostname: nginx
      restartPolicy: Always
status: {}

service contents:

apiVersion: v1
kind: Service
metadata:
  annotations:
    kompose.cmd: kompose convert
    kompose.version: 1.22.0 (955b78124)
  creationTimestamp: null
  labels:
    io.kompose.service: nginx
  name: nginx
spec:
  ports:
    - name: "80"
      port: 80
      targetPort: 80
  selector:
    io.kompose.service: nginx
status:
  loadBalancer: {}

Now that when I run docker ps and kubectl get pods, I see it’s running fine and I can even exec into it but http://IP does not work and I get connection refused error.

docker ps contents:

CONTAINER ID   IMAGE                    COMMAND                  CREATED          STATUS          PORTS                                       NAMES
0655811a5133   nginx                    "/docker-entrypoint.…"   11 minutes ago   Up 11 minutes                                               k8s_nginx_nginx-8488595897-s54d4_default_11ab5920-f21d-48ee-8d72-1955414fae14_0
dd03c5be3bde   k8s.gcr.io/pause:3.4.1   "/pause"                 11 minutes ago   Up 11 minutes                                               k8s_POD_nginx-8488595897-s54d4_default_11ab5920-f21d-48ee-8d72-1955414fae14_0

Am I doing anything wrong? Or I should add something to my deployment file?
I googled but it seems some of the solutions did not work.

2

The way docker exposes services is very different from the way they’re exposed in Kubernetes. Your service has been exposed, but only on the internal Pod Network. If you want to expose it so it accessible outside the cluster you need to use a NodePort or LoadBalancer Service (NOTE: LoadBalancer requires working with an external provider).

This video breaks down the different types and how they’re used: