CODEWITHSUNDEEP
kubernetes
A.Dumas
A.Dumas

Reputation: 3327

How to deploy custom nginx app on kubernetes?

I want to deploy a custom nginx app on my kubernetes cluster.

I have three raspberry in a cluster. My deplotment file looks as follows 

kubepodDeploy.yaml

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-nginx
spec:
  selector:
    matchLabels:
      run: my-nginx
  replicas: 2
  template:
    metadata:
      labels:
        run: my-nginx
    spec:
      containers:
      - name: my-nginx
        image:   privateRepo/my-nginx
        ports:
        - containerPort: 80

---
apiVersion: v1
kind: Service
metadata:
  name: my-nginx
  labels:
    run: my-nginx
spec:
  type: NodePort 
  ports:
  - port: 8080
    targetPort: 80
    protocol: TCP
    name: http
  - port: 443
    protocol: TCP
    name: https
  selector:
    run: my-nginx

How can I deploy it so that I can access my app by ipadress. Which service type do I need?

my service details are: 

kubectl describe service my-nginx                                                                                                                           ~/Project/htmlBasic
Name:                     my-nginx
Namespace:                default
Labels:                   run=my-nginx
Annotations:              Selector:  run=my-nginx
Type:                     NodePort
IP:                       10.99.107.194
Port:                     http  8080/TCP
TargetPort:               80/TCP
NodePort:                 http  30488/TCP
Endpoints:                10.32.0.4:80,10.32.0.5:80
Port:                     https  443/TCP
TargetPort:               443/TCP
NodePort:                 https  32430/TCP
Endpoints:                10.32.0.4:443,10.32.0.5:443
Session Affinity:         None
External Traffic Policy:  Cluster
Events:                   <none>

Upvotes: 0

Views: 86

Answers (1)

thinkingmonster
thinkingmonster

Reputation: 5433

You can not access the application on ipaddress:8080 without using a proxy server in front or changing IPtable rules(not good idea). NodePort service type will always expose service in port range 30000-32767

So at any point, your service will be running on ipaddress:some_higher_port

Running a proxy in front which, redirects the traffic to node port and since 8080 is your requirement so run proxy server also on 8080 port.

Just to add proxy server will not be part of Kubernetes cluster

If you are on cloud consider using LoadBalancer service and access you app on some DNS name.

Upvotes: 2

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