Google容器连接到服务

Question

I'm following a course on PluralSight where the course author puts a docker image onto kubernetes and then access it via his browser. I'm trying to replicate what he does but I cannot manage to reach the website. I believe I might be connecting to the wrong IP.

I have a ReplicationController that's running 10 pods :

rc.yml

apiVersion: v1
kind: ReplicationController
metadata:
          name: hello-rc
spec:
        replicas: 10
        selector:
                app: hello-world
        template:
             metadata:
                labels:
                        app: hello-world
             spec:
                     containers:
                             - name: hello-pod
                               image: nigelpoulton/pluralsight-docker-ci:latest
                               ports:
                                       - containerPort: 8080

I then tried to expose the rc:

kubectl expose rc hello-rc --name=hello-svc --target-port=8080 --type=NodePort


$ kubectl get services
NAME         CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
hello-svc    10.27.254.160   <nodes>       8080:30488/TCP   30s
kubernetes   10.27.240.1     <none>        443/TCP          1h

My google container endpoint is : 35.xxx.xx.xxx and when running kubectl describe svc hello-svc the NodePort is 30488

Thus I try to access the app at 35.xxx.xx.xxx:30488 but the site can't be reached.

Answer 1

If you want to access your service via the NodePort port, you need to open your firewall for that port (and that instance).

A better way is to create a service of type LoadBalancer ( --type=LoadBalancer ) and access it on the IP Google will give you.

Do not forget to delete the load balancer when you are done.