Below is configMap file for the pod containing multiple container. Port number 80 is exposed to external world and it will then redirect to port 5000 of another container running in the pod.

apiVersion: v1
kind: ConfigMap
metadata:
  name: mc3-nginx-conf
data:
  nginx.conf: |-
    user  nginx;
    worker_processes  1;

    error_log  /var/log/nginx/error.log warn;
    pid        /var/run/nginx.pid;

    events {
        worker_connections  1024;
    }

    http {
        include       /etc/nginx/mime.types;
        default_type  application/octet-stream;

        sendfile        on;
        keepalive_timeout  65;

        upstream webapp {
            server 127.0.0.1:5000;
        }

        server {
            listen 80;

            location / {
                proxy_pass         http://webapp;
                proxy_redirect     off;
            }
        }
    }


$kubectl apply -f confimap.yaml

The pod configuration:

apiVersion: v1
kind: Pod
metadata:
  name: mc3
  labels:
    app: mc3
spec:
  containers:
  - name: webapp
    image: training/webapp
  - name: nginx
    image: nginx:alpine
    ports:
    - containerPort: 80
    volumeMounts:
    - name: nginx-proxy-config
      mountPath: /etc/nginx/nginx.conf
      subPath: nginx.conf
  volumes:
  - name: nginx-proxy-config
    configMap:
      name: mc3-nginx-conf

Step 3. Expose the Pod using the NodePort service:

$ kubectl expose pod mc3 --type=NodePort --port=80
service "mc3" exposed

Step 4. Identify port on the node that is forwarded to the Pod:

$ kubectl describe service mc3

Name:                     mc3
Namespace:                default
Labels:                   app=mc3
Annotations:              <none>
Selector:                 app=mc3
Type:                     NodePort
IP:                       100.68.152.108
Port:                     <unset>  80/TCP
TargetPort:               80/TCP
NodePort:                 <unset>  32636/TCP
Endpoints:                100.96.2.3:80
Session Affinity:         None
External Traffic Policy:  Cluster
Events:                   <none>

But i am unable to perform curl

$ curl 100.96.2.3:80

$ curl http://100.96.2.3:80

$ curl http://100.96.2.3:32636

So,i want to know why this redirection doesn't work.

Source: https://www.mirantis.co.jp/blog/multi-container-pods-and-container-communication-in-kubernetes/

Its written on the page that we can access using url

http://myhost:

Now,what is myhost here ? and ,i understood that port exposed is 32636

But ,i am not able to access from browser or curl /wget command.