host public node js website on amazon AWS LightSail without Bitnami - node.js

I have an amazon AWS LightSail instance and have installed Node js downloaded from nodejs.org. Now the setup is complete and I am able to launch my nodejs webpage inside LightSail instance using "http://localhost but when I try to do it using the lightsail public IP from any other laptop, it not getting accessible (getting web error as "This site can’t be reached").
I have set the node js to listen to port 80 which is open by default.
A lot of materials shows that bitnami as a way to do it but can't I use normal node js installation to make the website public. Appreciate any guidance on this

Bitnami Engineer here,
You can configure your Nodejs app to use the port 3000 and then configure Apache to ProxyPass the requests to that port. This way you will be able to access your app using http and https. Does that sound good? You will need to run these commands:
Create the folders
sudo mkdir -p /opt/bitnami/apps/myapp
sudo mkdir /opt/bitnami/apps/myapp/conf
sudo mkdir /opt/bitnami/apps/myapp/htdocs
Create a /opt/bitnami/apps/myapp/conf/httpd-prefix.conf file with this content
Include "/opt/bitnami/apps/myapp/conf/httpd-app.conf"
Add this content to the /opt/bitnami/apps/myapp/conf/httpd-app.conf file
ProxyPass / http://127.0.0.1:3000/
ProxyPassReverse / http://127.0.0.1:3000/
Add this line to the /opt/bitnami/apache2/conf/bitnami/bitnami-apps-prefix.conf file
Include "/opt/bitnami/apps/myapp/conf/httpd-prefix.conf"
Restart Apache
sudo /opt/bitnami/ctlscript.sh restart apache
You have more information in our documentation
https://docs.bitnami.com/aws/infrastructure/nodejs/administration/create-custom-application-nodejs/

Related

Guide: How to make node js application which is http work on a https front end

I could not find a single comprehensive guide on this issue so I thought I'd create a easy guide for those who find themselves with a similar situation.
what I used:
vps with cpanel for front end.
amazon ec2 linux for back end node js app
follow this guide to install node js on ec2 https://www.youtube.com/watch?v=oHAQ3TzUTro
problem: node js app does not output anything on a https front end.
solution: install nginx server and use that to convert your http backend to a https subdomain so it can be displayed by the https front end.
example:
Point your subdomain to the ip of your ec2 instance ex: api.mywebsite.com => 11.22.33.44
in this example a nodeJS app hosted on a ec2 instance on port 8080 with IP http://11.22.33.44:8080
currently the clock doesn't display anything on https://mywebsite.com. but it should work on http://mywebsite.com
get autossl certificates from cpanel for https://mywebsite.com. and https://api.mywebsite.com.
copy and paste the certificate block of text into a notepad
copy and paste the private key block of text into a notepad
Follow this guide to install nginx and redirect your node js app at http://11.22.33.44:8080 TO http://11.22.33.44
https://www.youtube.com/watch?v=_EBARqreeao
now connect to your ec2 instance with ssh.
sudo mkdir /etc/nginx/ssl
sudo chmod 700 /etc/nginx/ssl
this creates a folder to put your server.crt and server.key in.
sudo vim /etc/nginx/ssl/server.crt
copy your autossl certificate of api.mywebsite.com and save
sudo vim /etc/nginx/ssl/server.key
copy your autossl private key of api.mywebsite.com and save
sudo vim /etc/nginx/nginx.conf
now go back to your configuration file from the previous video and change the locations of your ssl certificate and ssl key
the bottom of your .conf file should look like this.
sudo nginx -s reload
now reload your server and https://api.mywebsite.com should load whatever is on http://11.22.33.44:8080 with a "connection is secure" tag. and your https front end https://mywebsite.com should display what is on https://api.mywebsite.com

Spring boot .jar to digital ocean droplet (Linux Ubuntu) :Web server failed to start. Port 80 was already in use

I have an Digitalocean Droplet (virtual private server) that has Ubuntu 18.04 running on it. I installed Apache Web Server and have my website running on it . It's open to traffic on HTTP port 80. My virtual host is setup at /var/www/MyDomainNameHere/public_html/ and I do have a custom domain name pointing to the IP.
I am trying to deploy/run a executable .jar that contains a Spring boot API. It has some basic GET/POST/DELETE HTTP requests. When I run the jar by
java -jar rest-service.jar
I get this error message
***************************
APPLICATION FAILED TO START
***************************
Description:
Web server failed to start. Port 80 was already in use.
Does this mean the Apache Web Server that is open to Traffic on port 80 on this Digital ocean droplet won't let me run the API jar on the same server (The JAR loads up an Apache Tomcat embedded server, I set it to port 80 based on research)? Do I need to buy another droplet? Or can I maybe change the port number for the spring boot jar to something other than port 80? It's an API, so I need to be able to hit the end points
Yes, Apache Web Server using the port and you change your spring application 80 to any other port and use the reverse proxy in Apache Web server. here is the link to configure the reverse proxy
Apache as a Reverse Proxy with mod_proxy
So I will answer my own question. I googled and searched stackoverflow but most people were using the reverse proxy to direct traffic to their standalone embedded Tomcat server (most of time a Spring Boot app) which wasn't applicable to my situation.
However, I already had a static html website at alpizano.me hosted on Digital Ocean that I wanted to use as my Front-end, and only forward certain HTTP requests to my Spring Boot app, which was a REST API essentially.
So after installing Java and PostgreSQL on my DigitalOcean droplet, I SCP'd my JAR file (running ./mvnw clean package -Dmaven.test.skip=true to create it) to my server to a directory like, /var/myapp.
Then after researching for a few days and trying multiple things, I was able to figure out the combination that would allow me to view my website when navigating to alpizano.me, but still allow me to hit my API endpoints that were running on my server as-well, after I ran my jar via java -jar myapp.jar
So I basically had to set up my .conf file in the /etc/apache2/sites-available dir (I only used 1 virtual host for this project) as:
<VirtualHost *:80>
ServerName yourservername.com
DocumentRoot /var/www/yourservername.com/public_html
ProxyPreserveHost On
ProxyPass /api http://127.0.0.1:8080/
ProxyPassReverse /api http://127.0.0.1:8080/
</VirtualHost>
Notice the /api route for the routing that goes to the embedded Tomcat at port 8080 (you can't use port 80 or it will conflict with Apache Server already listening on port 80), else if it's just / , then it will not allow traffic to base website anymore (alpizano.me), which isn't what I wanted.
This wouldn't be needed if you just had a standalone app that you wanted to route traffic, then you could just use / as your route obviously. I saw other posts talking about forwarding the headers but that didn't seem to make a difference for me and I believe ProxyPreserveHost On takes care of that anyway
Good luck.
References:
https://www.digitalocean.com/community/tutorials/how-to-use-apache-as-a-reverse-proxy-with-mod_proxy-on-ubuntu-16-04

How can I deploy Node Js back-end and React Js front-end on server?

I have created a back-end using Node Express which is running on port 5000. And my front-end using React Js which is running on port 3000. And both of them are in different folders in root directory.
I want to upload both of these and deploy on digital ocean Server. I am new to this department process. How can I deploy both of these on server and run by one command, please
Here is one way of doing it (using node server to serve as an API for React website served by Apache server).
You can leave nodejs running on port 5000 (on the remote server) but make sure that you are not using localhost but 0.0.0.0.
ie. app.listen(5000, "0.0.0.0");
Now, you should be able to communicate with the node server via public IP/DNS name on that port ie. myPublicIpOrDNSname:5000. (assuming that you have installed nodejs as well as npm => be careful about version, apt-get install nodejs, by default, will fetch an older version)
If you need newer version of nodejs then you can fetch it by following these steps (you can replace that setup_8.x part with your preferred version).
cd ~
curl -sL https://deb.nodesource.com/setup_8.x -o nodesource_setup.sh
sudo bash nodesource_setup.sh
sudo apt-get install nodejs
Use Apache2 server to serve your static (React, css, ...) files (you don't need to run create-react-app server).
sudo apt-get update
sudo apt-get install apache2
Build your React project using npm run build and then place the files that were created inside of /build folder (in the React folder) to /var/www/html (on the remote server). Note that you need to place there files and folders from /build folder, not the /build folder itself.
Now you should be able to see your react website running when you type the myPublicIpOrDNSname address (assuming that Apache is running sudo systemctl start apache2).
For Apache to work correctly (if you are using front-end routing - ie. react-router-dom), you need to go to /etc/apache2/sites-enabled/000-default.conf and place this configuration
<Directory "/var/www/html">
RewriteEngine on
# Don't rewrite files or directories
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
# Rewrite everything else to index.html to allow html5 state links
RewriteRule ^ index.html [L]
</Directory>
under <VirtualHost ...> section in that file. (Apache does't know about your React routes. This will make it push every request that it doesn't know how to handle to the root and leave React handle the routing)
Then you need to make sure that RewriteEngine is running (otherwise you will get an error when restarting Apache server).
sudo a2enmod rewrite
Finally, restart Apache server
sudo /etc/init.d/apache2 restart
Now, it should work.
Note that you need to modify your ajax calls in your React with the new public IP/DNS.
If your front-end is create react app, you can do npm run build, and serve static assets in nodejs via nodejs in the same server. It will serve the minified chunks.
app.use(express.static(path.join(__dirname, '../client/build')));
You can server side render your react app from your Node.js/Express, I think currently your are using webpack to render your react app on port 3000. If you can upload your code to take a look it will be easier to help

Run node.js on cpanel hosting server

It is a simple node.js code.
var http = require('http');
http.createServer(function(req, res) {
res.writeHead(200, { 'Content-Type' : 'text/plain'});
res.end('Hello World!');
}).listen(8080);
I uploaded it on cpanel hosting server and installed node.js and run it.
If a server is normal server I can check script result by accessing 'http://{serverip}:8080'. But on cpanel is hosting domain and sub domain and every domain is matched by every sites. Even http://{serverip} is not valid url.
How can I access my node.js result?
Kindly teach me.
Thanks.
bingbing.
Install/Setup NodeJS with CPanel
1. Log in to your account using SSH (if it is not enabled for your account, contact the support team).
2. Download Node.js
wget https://nodejs.org/dist/latest/node-v10.0.0-linux-arm64.tar.xz
3. Extract the Node.js files
tar xvf node-v10.0.0-linux-arm64.tar.xz
4.Now rename the folder to "nodejs". To do this, type the following command
mv node-v10.0.0-linux nodejs
5. Now to install the node and npm binaries, type the following commands:
mkdir ~/bin <br> cp nodejs/bin/node ~/bin
cd ~/bin
ln -s
../nodejs/lib/node_modules/npm/bin/npm-cli.js npm
6. Node.js and npm are installed on your account. To verify this, type the following commands
node --version
npm --version
The ~/bin directory is in your path by default, which means you can run node and npm from any directory in your account.
7. Start Node.js Application
nohup node my_app.js &
8. Stop the Application
pkill node
9. Integrating a Node.js application with the web server(optional)
Depending on the type of Node.js application you are running, you may want to be able to access it using a web browser. To do this, you need to select an unused port for the Node.js application to listen on, and then define server rewrite rules that redirect visitors to the application.
In a text editor, add the following lines to the .htaccess file in the/home/username/public_html directory, where username represents your account username:
RewriteEngine On
RewriteRule ^$ http://127.0.0.1:XXXXX/ [P,L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ http://127.0.0.1:XXXXX/$1 [P,L]
In both RewriteRule lines, replace XXXXX with the port on which your Node.js application listens.
To run a Node.js application on a managed server, you must select an unused port, and the port number must be between 49152 and 65535(inclusive).
Save the changes to the .htaccess file, and then exit the text editor. Visitors to your website are redirected to the Node.js application listening on the specified port.
If your application fails to start, the port you chose may already be in use. Check the application log for error codes like EADDRINUSE that indicate the port is in use. If it is, select a different port number, update your application’s configuration and the .htaccess file, and then try again.
cPanel typically runs Apache or another web server that is shared among all the cPanel/unix accounts. The web server listens on port 80. Depending on the domain name in the requested URL, the web server uses "Virtual Hosting" to figure out which cPanel/unix account should process the request, i.e. in which home directory to find the files to serve and scripts to run. If the URL only contains an IP address, cPanel has to default to one of cPanel accounts.
Ordinarily, without root access, a job run by a cPanel account cannot listen on port 80. Indeed, the available ports might be quite restrictive. If 8080 doesn't work, you might try 60000. To access a running node.js server, you'll need to have the port number it's listening on. Since that is the only job listening on that port on that server, you should be able to point your browser to the domain name of any of the cPanel accounts or even the IP address of the server, adding the port number to the URL. But, it's typical to use the domain name for the cPanel account running the node.js job, e.g. http://cPanelDomainName.com:60000/ .
Of course port 80 is the default for web services, and relatively few users are familiar with optional port numbers in URLs. To make things easier for users, you can use Apache to "reverse proxy" requests on port 80 to the port that the node.js process is listening on. This can be done using Apache's RewriteRule directive in a configuration or .htaccess file. This reverse proxying of requests arguably has other benefits as well, e.g. Apache may be a more secure, reliable and manageable front-end for facing the public Internet.
Unfortunately, this setup for node.js is not endorsed by all web hosting companies. One hosting company that supports it, even on its inexpensive shared hosting offerings, is A2Hosting.com. They also have a clearly written description of the setup process in their Knowledge Base.
Finally, it's worth noting that the developers of cPanel are working on built-in node.js support. "If all of the stars align we might see this land as soon as version 68," i.e. perhaps early 2018.
References
Apache Virtual Hosting -
http://httpd.apache.org/docs/2.4/vhosts/
Apache RewriteRule Directive - http://httpd.apache.org/docs/2.4/mod/mod_rewrite.html
A2Hosting.com Knowledge Base Article on Configuring Node.js - https://www.a2hosting.com/kb/installable-applications/manual-installations/installing-node-js-on-managed-hosting-accounts
cPanel Feature Request Thread for node.js Support - https://features.cpanel.net/topic/nodejs-hosting
Related StackOverflow Questions
How to host a Node.Js application in shared hosting
Why node.js can't run on shared hosting?
Yes it's possible, but it has few dependencies which may or may not be supported by either your cpanel hosting provider or the plan you opt in for.
Below steps that I'm mentioning is just for a demo purpose. If you are a student or just want to play with it you can try it out. I'm not a security expert so from security point of view how good it is I really don't know.
So with that being said let's see how I configured it. I have hostinger cpanel hosting subscription and following are the steps:
Enable SSH ACCESS
Connect to shared machine via ssh
Check your linux distro and download & setup node js
In my case following are the commands for that:
Downloading node & extracting it using curl
curl https://nodejs.org/dist/v12.18.3/node-v12.18.3-linux-x64.tar.gz |tar xz
This will download & extract node & create a directory. You can confirm that using ls command as shown in the image below.
At this point you can check the versions as shown below
as you can see for the node command it's okay but for the npm command we have modify it as follows
./node-v12.18.3-linux-x64/bin/node ./node-v12.18.3-linux-x64/lib/node_modules/npm/bin/npm-cli.js --version
Further we can create alias to make life little easier
check the below images for that:
I tried using bashrc/bash_profile but somehow it didn't work .
And that's all node server running on a shared cpanel machine.
Now I wanted to have an express js based rest api support in this case. The problem with that is it will be locally hosted on the port I'll give. Check the below example:
var express=require('express')
var app=express()
app.get('/', function (req, res) {
res.send('hosting node js base express api using php & shared hosting a great way to start yjtools')
})
console.log("listening yjtools node server on port 49876...")
app.listen(49876)
The problem here is even though it will execute I'll not be able to access it over the network. This is because we only get fixed predefined ports (like 80,21,3306 etc.) which are allowed/open on the shared cpanel machine. Due to this the express app I hosted will only available locally on 49876 port.
Let's see what do we have:
An express js based app hosted locally on cpanel machine.
Php based hosted Apache server available over http/https.
So we can make use of php with redirect rule set and curl to bridge the gap.
Following are the changes I did to make it work:
In .htaccess file add a redirect rule, say domain/api is what I want my rest api path to be.
RewriteRule api/(.*)$ api/api.php?request=$1 [QSA,NC,L]
In the api/api.php file (this is the path I choose you can choose any path)
<?php
echo "Hello ".$_REQUEST['username'];
echo '<hr>';
$curl = curl_init('http://127.0.0.1:49976/');
curl_setopt($curl, CURLOPT_HEADER, 1);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
//Get the full response
$resp = curl_exec($curl);
if($resp === false) {
//If couldn't connect, try increasing usleep
echo 'Error: ' . curl_error($curl);
} else {
//Split response headers and body
list($head, $body) = explode("\r\n\r\n", $resp, 2);
$headarr = explode("\n", $head);
//Print headers
foreach($headarr as $headval) {
header($headval);
}
//Print body
echo $body;
}
//Close connection
curl_close($curl);
?>
And on the ssh prompt just run the app.js file
node api/app.js
Below are the images for this working in action:
Here is the similar thing which I referred for my program, so we can also make this node call via php itself.
Now I have express based rest api support , angular app hosted and mysql for database everything on cpanel.
You can use any domain pointed to that cPanel server and instead of accessing http://server-ip:8080 try accessing http://domain.tld:8080. By default cPanel does not bind on port 8080. Be sure to check if there is any firewall on the server. If it is, then allow incoming connections on tcp port 8080. Depending on your WHM server configuration, it should also work with http://server-ip:8080
cPanel Version 80 has nodejs 10.x support: https://documentation.cpanel.net/display/80Docs/80+Release+Notes#id-80ReleaseNotes-InstallanduseNode.jsapplications
Install and use Node.js applications
You can now install and use Node.js applications on your server. To
use Node.js, install the ea-nodejs10 module in the Additional Packages
section of WHM's EasyApache 4 interface (WHM >> Home >> Software >>
EasyApache 4).
You can register Node.js applications in cPanel's Application Manager
interface (cPanel >> Home >> Software >> Application Manager). For
more information, read our Guide to Node.js Installations
documentation.
For Application Manager to be enabled: https://documentation.cpanel.net/display/80Docs/Application+Manager
Your hosting provider must enable the Application Manager feature in
WHM's Feature Manager interface (WHM >> Home >> Packages >> Feature
Manager).
Your hosting provider must install the following Apache modules:
The ea-ruby24-mod_passengermodule. Note: This module disables Apache's
mod_userdir module.
The ea-apache24-mod_env module. Note: This module allows you to add
environment variables when you register your application. For more
information about environment variables, read the Environment
Variables section below.
The ea-nodejs10 module if you want to register a Node.js™ application.
You can see how application manager looks like in this Youtube video:
https://www.youtube.com/watch?v=ATxMYzLbRco
anyone who wants to know how to deploy node js app to Cpanel this is a good source for him, this explains thoroughly how to deploy node js app to Cpanel please check this

node js installation on Apache HTTP server (centOS)

I'm working at a project in school that includes Apache server.
All i need to do right now to start working with the server is create An index file (html, ph) at my folder on the server (inside the public_html) and the server will return that page.
but the thing is that I want to write the server with nodejs.
I have already manage to install node on the server but I know how to ignore the Apache server and start working with node.
I read about that and I saw that i need to start node on a different port? or use proxy?
but I really don't know that much about servers.
You can use apache as proxy for nodejs https://httpd.apache.org/docs/2.2/mod/mod_proxy.html.
ProxyPass / http://localhost:3000/
ProxyPassReverse / http://localhost:3000/
Or, if you want to run the nodejs not from root directory of server
ProxyPass /mynodejsproject http://localhost:3000/
ProxyPassReverse /mynodejsproject http://localhost:3000/
For example, nodejs application listens on 3000 port, apache on 80 port, and it proxies requests to nodejs application.
But i recommend you to use nginx as proxy for nodejs application, this is the config i used in my projects https://github.com/vodolaz095/hunt/blob/master/examples/serverConfigsExamples/nginx.conf
service apache2 stop Stops your apache server (It works on 80 port default)
Also there is a good tool for nodejs ,you will able to manage your nodeJS server(you can give 80 port now) like services with forever on nodeJS.(I assumed you know how to creating your nodejs http server)

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