Step-by-Step Guide to Deploying Multiple Applications on an Ubuntu Server

Diagram

Here's a simple diagram illustrating the deployment architecture:

Deployment Guide

Steps

1. Initial Setup

• Update the system:

Install necessary packages:

sudo apt install -y nginx git nodejs npm
        

2. Clone the Repositories

Navigate to the project directory:

cd /var/www
        

Clone the Next.js application repositories:

git clone [your_nextjs_repo] devapi.aayattours.com
git clone [your_nextjs_repo] devapi.muslimcouplesretreat.com
        

3. Install Dependencies and Build the Applications

Install dependencies:

cd /var/www/devapi.aayattours.com
npm install
npm run build
        

Repeat for the second application:

cd /var/www/devapi.muslimcouplesretreat.com
npm install
npm run build
        

4. Configure PM2 for Process Management

Install PM2 globally:

sudo npm install pm2@latest -g
        

Start the applications with PM2:

cd /var/www/devapi.aayattours.com
pm2 start npm --name "devapi.aayattours.com" -- start

cd /var/www/devapi.muslimcouplesretreat.com
pm2 start npm --name "devapi.muslimcouplesretreat.com" -- start
        

Save the PM2 process list and setup startup script:

pm2 save
pm2 startup
        

####b 5. Nginx Configuration

Create Nginx configuration files:

sudo nano /etc/nginx/sites-available/dev.aayattours.com
sudo nano /etc/nginx/sites-available/devapi.aayattours.com
sudo nano /etc/nginx/sites-available/devapi.muslimcouplesretreat.com
        

Add the following configurations respectively:

1.

# /etc/nginx/sites-available/dev.aayattours.com
server {
    listen 80;
    server_name dev.aayattours.com;

    location / {
        proxy_pass https://localhost:8080;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }
  }
        

2.

# /etc/nginx/sites-available/devapi.aayattours.com
server {
    listen 80;
    server_name devapi.aayattours.com;

    location / {
        proxy_pass https://localhost:8081;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }
  }
        

3.

# /etc/nginx/sites-available/devapi.muslimcouplesretreat.com
server {
    listen 80;
    server_name devapi.muslimcouplesretreat.com;

    location / {
        proxy_pass https://localhost:8082;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }
  }
        

Enable the configurations:

sudo ln -s /etc/nginx/sites-available/dev.aayattours.com /etc/nginx/sites-enabled/
sudo ln -s /etc/nginx/sites-available/devapi.aayattours.com /etc/nginx/sites-enabled/
sudo ln -s /etc/nginx/sites-available/devapi.muslimcouplesretreat.com /etc/nginx/sites-enabled/
        

Test and reload Nginx:

  sudo nginx -t
  sudo systemctl reload nginx
        

6. Firewall Configuration

Allow necessary ports:

  sudo ufw allow 80
  sudo ufw allow 8080
  sudo ufw allow 8081
  sudo ufw allow 8082
  sudo ufw allow 443
  sudo ufw enable
        

7. Setup SSL with Certbot

Install Certbot:

sudo apt install certbot python3-certbot-nginx
        

Obtain and install SSL certificates:

sudo certbot --nginx -d dev.aayattours.com
sudo certbot --nginx -d devapi.aayattours.com
sudo certbot --nginx -d devapi.muslimcouplesretreat.com
        

Verify Certbot renewal:

sudo certbot renew --dry-run
        

Conclusion

You have successfully deployed three applications on an Ubuntu server, configured them to run with PM2, and set up Nginx as a reverse proxy with SSL certificates from Certbot. These steps ensure that your applications will run continuously, even after server reboots, and are secured with HTTPS.