Video 104 Completed

Author: CodeWithHarry

Video 104/Readme.md

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+## How to host Node.js apps on Ubuntu
+
+### Step 1 - Installing Node.js & build essentials
+```
+curl -fsSL https://deb.nodesource.com/setup_21.x | sudo -E bash - &&\
+sudo apt-get install -y nodejs
+```
+Now install build essentials
+```
+sudo apt-get install build-essential
+```
+
+### Step 2 - Create a sample Node.js app
+You can also use your own app if you want to host it. Otherwise if you are just trying out, you can use a sample app.
+
+
+### Step 3 - Install pm2 & launch your app
+Install pm2 package which is a process manager for Node.js applications
+```
+sudo npm install -g pm2
+```
+
+Now launch your app using this command
+```
+pm2 start index.js
+```
+
+### Step 4 - Install nginx
+Nginx is a web server which we will be using as a proxy
+```
+sudo apt install nginx
+```
+
+Now edit the file at /etc/nginx/sites-available/default using following command 
+```
+sudo nano /etc/nginx/sites-available/default
+```
+
+We want this file to look like this:
+```
+. . .
+    location / {
+        proxy_pass http://localhost:3000;
+        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;
+    }
+}
+...
+```
+
+### Step 5 - Test and restart nginx
+Test and restart nginx using following commands
+```
+sudo nginx -t
+```
+Now restart using:
+```
+sudo systemctl restart nginx
+```

Video 104/index.js

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+const express = require('express')
+const app = express()
+const port = 3000
+
+app.get('/', (req, res) => {
+  res.send('Hello World!')
+})
+
+app.listen(port, () => {
+  console.log(`Example app listening on port ${port}`)
+})