CODEWITHSUNDEEP
kubernetes
Bino Oetomo
Bino Oetomo

Reputation: 625

How to networking in k8s

Here is my working condition:

  1. My laptop @ 192.168.12.85 gw 192.168.1.254
  2. Controll plane : bino-k8-master @ 192.168.1.66 gw 192.168.1.247
  3. worker node : bino-k8-wnode1 @ 192.168.1.67 gw 192.168.1.247

k8s cluster is build per https://www.hostafrica.ng/blog/kubernetes/kubernetes-ubuntu-20-containerd/

I build simple flask app image per https://faun.pub/run-your-flask-app-on-kubernetes-ff03854db842

Currently, the app is running:

ubuntu@bino-k8-master:~$ kubectl get pods -o wide
NAME                                    READY   STATUS    RESTARTS   AGE   IP           NODE             NOMINATED NODE   READINESS GATES
flask-k8s-deployment-59bd54648c-jdgxv   1/1     Running   0          16h   10.244.1.8   bino-k8-wnode1   <none>           <none>

also the service:

ubuntu@bino-k8-master:~$ kubectl get services -o wide
NAME                TYPE           CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE   SELECTOR
flask-k8s-service   LoadBalancer   10.96.179.198   <pending>     6000:30787/TCP   17h   app=flask-k8s
kubernetes          ClusterIP      10.96.0.1       <none>        443/TCP          18h   <none>

But I can not access the app or service from control plane ... curl http://10.244.1.8:5000 and http://10.96.179.198:6000 both failed (no message, just stuck)

But both curl will work if I did it from the worker node.

Kindly please tell me what to do to make the app or service can be acessed from my laptop (192.168.1.85)

Sincerely

Bino

Upvotes: 0

Views: 51

Answers (1)

Buggies
Buggies

Reputation: 383

If you want to access it from a laptop you need to get the extenal-ip of the load balancer. It is not on screenshot yet. If you want just to test it, you can port forward with correct ports.

kubectl port-forward flask-k8s-deployment-59bd54648c-jdgxv 3000:3000

and then just call

http://localhost:3000

If you want to access it from internet, create https://kubernetes.io/docs/concepts/services-networking/ingress/

Upvotes: 1

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