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nginx-nodejs.md

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Setup nodejs project on ubuntu

Install Node using NVM

https://tecadmin.net/how-to-install-nvm-on-ubuntu-20-04/

Install nvm

sudo apt install curl 
curl https://raw.githubusercontent.com/creationix/nvm/master/install.sh | bash 
source ~/.bashrc // Reload the bash to apply the change

Install lts version of node. In order to install the latest one, use nvm install node

nvm install --lts

To switch back to LTS version: nvm use --lts To remove a Node version: nvm uninstall [NODE_VERSION]

With nvm, you can ignore sudo when using npm

(Optional) Install Node without NVM

This step is optional, just in case you want to use sudo npm because sudo npm isn't recognized when you nvm https://www.hostinger.com/tutorials/how-to-install-node-ubuntu

To install the current release, execute the following command. Remember to replace the 18.x value with your preferred Node.js version:

curl -fsSL https://deb.nodesource.com/setup_lts.x | sudo -E bash - &&\
sudo apt-get install -y nodejs

Install and setup nginx

Install nginx

sudo apt update
sudo apt install nginx

Setup new project:

Create a file with name as your domain in /etc/nginx/site-available

server {
  listen 80;
  listen [::]:80;

  server_name demo-node-api.vietnguyenwp.com;

  root /var/www/demo-node-api.vietnguyenwp.com;
  index index.html;

  location / {
    proxy_pass http://localhost:3001; #whatever port your app runs on
        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;
  }
}

Then you need to enable that site:

sudo ln -s /etc/nginx/sites-available/demo-node.vietnguyenwp.com /etc/nginx/sites-enabled/demo-node.vietnguyenwp.com

Save it and exit.

Test nginx config and make sure there's no error

sudo nginx -t

then restart the service

sudo systemctl reload nginx

test nginx:

curl localhost

server block for react

server {
  listen 80;
  listen [::]:80;

  server_name demo-node.vietnguyenwp.com;

  root /var/www/demo-node.vietnguyenwp.com;
  index index.html;

  location / {
    try_files $uri $uri/ /index.html;
  }
  error_page 404 =200 /index.html;
}

Setup Firewall

NOTES: If you are using oracle, don't use ufw https://stackoverflow.com/questions/62326988/cant-access-oracle-cloud-always-free-compute-http-port

Use this instead

sudo iptables -I INPUT 6 -m state --state NEW -p tcp --dport 80 -j ACCEPT
sudo iptables -I INPUT 6 -m state --state NEW -p tcp --dport 443 -j ACCEPT
sudo netfilter-persistent save
sudo ufw enable
sudo ufw status
sudo ufw allow ssh (Port 22)
sudo ufw allow http (Port 80)
sudo ufw allow https (Port 443)

Modify .env file

Install PM2 process manager to keep the app running

PM 2 helps to create, terminate, and even monitor a Node.js application

npm i -g pm2

Create pm2 instance:

pm2 start --name api index.js
pm2 startup ubuntu

Install yarn

sudo apt remove cmdtest
sudo apt remove yarn # Only need if you already install yarn
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
sudo apt-get update
sudo apt-get install yarn -y
yarn install

Setup SSL using certbot

Go to https://certbot.eff.org/ and do as the instructions. When install Certbot, chose sudo certbot --nginx, it will automatically set up the SSL