Kubernetes Internal Service IP cannot find pod

Question

I have the following pod definition to run a basic instance of nginx

---
apiVersion: v1
kind: Pod
metadata:
  name: basic
  labels:
    appName: static-website
spec:
  containers:
      - image: nginx
        name: basic

I have made the following service definition

apiVersion: v1
kind: Service
metadata:
  name: web-service-local
spec:
  type: NodePort
  ports:
   - targetPort: 80
     port: 80
     nodePort: 30080
  selector:
    appName: static-website

❌ When I try to access the nginx page via the service IP it get's stuck

• kubectl exec --stdin --tty basic -- /bin/bash
• curl web-service-local

I have verified successfully that

• ✅The pod is running correctly as when I run kubectl get pods I get

NAME    READY   STATUS    RESTARTS   AGE
basic   1/1     Running   0          7m22s

• That the service selecter matches the pod label
  • kubectl describe svc web-service-local | grep Selector | awk '{print $2}'
  • kubectl describe pod basic | grep Labels | awk '{print $2}'
• ✅I can connect to the pod and nginx is running
  • kubectl exec --stdin --tty basic -- /bin/bash
  • curl localhost to retrieve the standard nginx homepage.
• ✅ I can connect to the pod and nginx is running and can connect via the IP address
  • kubectl get pods -l appName=static-website -o go-template='{{range.items}}{{.status.podIP}}{{"\n"}}{{end}}' , returns the POD IP
  • kubectl exec --stdin --tty basic -- /bin/bash
  • apt update && apt upgrade && apt install dnsutils -y
  • curl **POD IP** ( POD IP ) is from first command
• ✅I can verify that both the service and the pod are in the default namespace
  • kubectl get pod basic --namespace default displays the pod
  • kubectl get svc web-service-local --namespace default
• ✅I can verify that the DNS has been setup
  • kubectl exec --stdin --tty basic -- /bin/bash
  • apt update && apt upgrade && apt install dnsutils -y
  • nslookup web-service-local , nslookup web-service-local.default and nslookup web-service-local.default.svc.cluster.local all return the same

Server:     10.96.0.10
Address:    10.96.0.10#53

Name:   web-service-local.default.svc.cluster.local
Address: 10.106.61.252

✅ I have verified that I can access nginx via the Endpoint IP

• kubectl describe svc web-service-local | grep Endpoints | awk '{print $2}' kubectl describe svc web-service-local | grep Endpoints | awk '{print $2}' Endpoint IP
• kubectl exec --stdin --tty basic -- /bin/bash
• curl **Endpoint IP**

Answer 1

Since you have NodePort service type implementation, please try with nodeIP:NodePort from the browser or perform the curl as a NodePort service is the most primitive way to get external traffic directly to your service. NodePort, as the name implies, opens a specific port on all the Nodes (the VMs), and any traffic that is sent to this port is forwarded to the service.

curl -kvv Nodeip:NodePort 

Answer 2

The configuration worked. The problem was my local Minikube setup. Once I moved to AKS it was fine