无法访问 kubernates pod

Question

I follow below steps to deploy my custom jar

1)- I created on docker image through the below docker file

FROM openjdk:8-jre-alpine3.9
LABEL MAINTAINER DINESH
LABEL version="1.0"
LABEL description="First image with Dockerfile & DINESH."
RUN mkdir  /app
COPY LoginService-0.0.1-SNAPSHOT.jar /app
WORKDIR /app
CMD ["java", "-jar", "LoginService-0.0.1-SNAPSHOT.jar"]

2)- Deploy on kubernetes with the below deployment file

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app.kubernetes.io/name: load-balancer-example
  name: hello-world
spec:
  replicas: 2
  selector:
    matchLabels:
      app.kubernetes.io/name: load-balancer-example
  template:
    metadata:
      labels:
        app.kubernetes.io/name: load-balancer-example
    spec:
      containers:
      - image: localhost:5000/my-image:latest
        name: hello-world
        ports:
        - containerPort: 8000

3)- Exposed as service with the below command

minikube tunnel
kubectl expose deployment hello-world --type=LoadBalancer --name=my-service --port=8000 --target-port=8000 

4)- Output of the kubectl describe svc my-service

<strong>
Name:                     my-service<br> 
Namespace:                default<br> 
Labels:                   app.kubernetes.io/name=load-balancer-example<br> 
Annotations:              <none><br> 
Selector:                 app.kubernetes.io/name=load-balancer-example<br> 
Type:                     LoadBalancer<br> 
IP:                       10.96.142.93<br> 
LoadBalancer Ingress:     10.96.142.93<br> 
Port:                     <unset>  8000/TCP<br> 
TargetPort:               8000/TCP<br> 
NodePort:                 <unset>  31284/TCP<br> 
Endpoints:                172.18.0.7:8000,172.18.0.8:8000<br> 
Session Affinity:         None<br> 
External Traffic Policy:  Cluster<br> 
Events:                   <none><br> </strong>

POD is in running state

I m trying to access the pod using "10.96.142.93" as given in the http://10.96.142.93:8090 my loginservice is started on 8090 PORT, BUT i am unable to access pod plz help

Answer 1

Try to access on nodeport localhost:31284 and please use service type as NodePort instead of LoadBalancer because loadbalancer service type mostly used on cloud level.

and Use Target-Port as same port you configured on pod definition yaml file.

so your url should be http://10.96.142.93:8000

or another way you can be by using port-forward

kubectl port-forward pod_name 80:8000 this will map pod port to localhost port

Then access it on http://localhost:80

Answer 2

The Kubernetes loadbalancer type service is provided only in places such as aws and gcp. Use metallb for use in an on-premises environment.

If not, try modifying the service type to Nodeport and accessing http://localhost:31284