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How to setup a nginx web server on your Linux cluster nodes and access through nginx reverse proxy and domain name
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I have deployed kubernetes cluster on AWS cloud ec2 instances T2.Medium with 20 GB each storage and 4 GB RAM + 2 Core CPU with Ubuntu OS. I use this link to deploy cluster on ubuntu OS : https://www.linuxtechi.com/install-kubernetes-on-ubuntu-22-04/
So my kubernetes cluster is ready to work. Lets start
$ kubectl get nodes -o wide
$ mkdir assignment1
$ mkdir -p /home/ubuntu/assignment1/static-data
$ cd /home/ubuntu/assignment1/static-data
$ wget https://www.free-css.com/assets/files/free-css-templates/download/page296/oxer.zip
$ unzip oxer.zip
$ ls oxer-html/
about.html blog.html class.html css images index.html js
$ vi web-app.yml
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
labels:
app: nginx
spec:
replicas: 2
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx
ports:
- containerPort: 80
volumeMounts:
- name: hostpath-volume
mountPath: /usr/share/nginx/html
volumes:
- name: hostpath-volume
hostPath:
path: /home/ubuntu/assignment/static-data # static image kept here
$ kubectl create -f webapp.yml
deployment.apps/nginx-deployment created
$ kubectl get pods
NAME READY STATUS RESTARTS AGE
nginx-deployment-6d64cb557d-n8rm4 1/1 Running 0 23s
nginx-deployment-6d64cb557d-xp8xd 1/1 Running 0 23s
$ kubectl expose deployment nginx-deployment --name=nginx-deployment-svc --port=80 --target-port=80 --type=NodePort
service/nginx-deployment-svc exposed
$ kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 6h37m
nginx-deployment-svc NodePort 10.108.123.135 <none> 80:31046/TCP 4s
Now we will go to AWS deployed kubernetes clusters node and copy public address and paste it to public browser like google chrome
So open google chrome broswer:
Master_Node_Public_Ip:nginx-deployment-svc-port-number
Till now we deployed our web application on cluster deployment servers. Now we have to require setup reverse-proxy, so we can access our web-app without specifying portnumber like 31046. so lets setup nginx reverse proxy for this.
Create a new AWS instance as an nginx-reverse-proxy server for specifying reverse proxy setup
$ sudo apt-get update
$ sudo apt-get install nginx
$ sudo systemctl restart nginx
$ sudo systemctl enable nginx
$ sudo cd /etc/nginx/conf.d
$ sudo vi nginx.conf
server {
listen 80; # will listen app ipv4 and ipv6 address on port number 80
listen [::]:80;
server_name 3.90.48.34; # Public IP of nginx-server
location / {
proxy_pass http://3.220.236.18:31046/; # public ip of clusters master node ip and nodeport
$ sudo nginx -t # check .conf file vaildation
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
$ sudo nginx -s reload # reload file
$ sudo systemctl restart nginx # reload nginx server
Now we setup nginx server completly. So take nginx-server public ip from aws console and paste it on chrome broser:
http://3.90.48.34
For this we have to require to purchase a domain name, like godaddy, hostinger, google domain, namecheap, bigrock etc. there are lots of option out there but here i am choosing namecheap domain registrar service.
As you see i have purchased a domain name "rakamodify.online" from namecheap domain registrar. Now you have to setup DNS nameserver and access public ip to domain name. I go to "advance DNS option" > Host Record > Add new record.
Note: we have to update our nginx-proxy configuration file with some changes
$ sudo vi nginx.conf server { listen 80; # will listen app ipv4 and ipv6 address on port number 80 listen [::]:80; server_name www.rakamodify.online ; # Insted of 3.90.48.34 Public IP of nginx-server, we use domain name location / { proxy_pass http://3.220.236.18:31046/; # public ip of clusters master node ip and nodeport $ sudo systemctl restart nginx
How to setup Kubernetes Cluster on Ubuntu OS: https://www.linuxtechi.com/install-kubernetes-on-ubuntu-22-04/
static website content: https://www.free-css.com/free-css-templates/page296/oxer
How to set reverse proxy: https://www.youtube.com/watch?v=B62QSbPhh1s
How to add an A host record for a domain name in Namecheap account https://www.youtube.com/watch?v=qjnQvuHqjxM
namecheap conect domain to server : https://www.namecheap.com/support/knowledgebase/article.aspx/9837/46/how-to-connect-a-domain-to-a-server-or-hosting/
To check & resolve DNS : https://www.dnswatch.info/