how to setup nodejs
install nodejs for a single user
nodejs apps needs to be run under user not glabally or even root this will encounter errors
add the user in sudoers file
usermod -aG sudo username
passwd username
then
install nvm globally
then install node js using nvm
then add bash profile manually
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" # This loads nvm
add above to lines in bashrc
=> Profile not found. Tried ~/.bashrc, ~/.bash_profile, ~/.zprofile, ~/.zshrc, and ~/.profile.
=> Create one of them and run this script again
OR
=> Append the following lines to the correct file yourself:
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" # This loads nvm
strap5887@vmi728455:~/public_html/strapi-backend$ sudo mkdir -p /home/strap5887
if you make anychnges to bashrc just do relogin changes does not work without relogin or exit
Install nodejs globally
# Install node
sudo apt install -y curl
curl -sL https://deb.nodesource.com/setup_18.x | sudo -E bash -
sudo apt install -y nodejs
# Set node global packages folder as /usr/local/lib/node_modules
NPM_PACKAGES="/usr/local/lib/node_modules"
sudo mkdir -p $NPM_PACKAGES
sudo chmod 777 $NPM_PACKAGES
# Update the path and manpath to read from npm packages
echo "export PATH="\""\$PATH:$NPM_PACKAGES/bin"\""
export MANPATH="\""\${MANPATH-\$(manpath)}:$NPM_PACKAGES/share/man"\""
npm config set prefix $NPM_PACKAGES" | sudo tee '/etc/profile.d/node-path.sh'
source /etc/profile.d/node-path.sh
to check all node version
nvm ls-remote
nvm install v14.17.3How can the default node version be set using NVM?
nvm alias default 6.11.5 if you want it pegged to that specific version.
You can also do nvm alias default 16.
Either way, you'll want to upgrade to the latest version of nvm (v0.33.11 as of this writing)
$ nvm alias default 16.14.2
# nvm set default node.js version 16.14.2
$ node -v
# v16.14.2root@server:/home/cloudvariation.in/public_html/blogar# nvm alias default 16.18.0
default -> 16.18.0 (-> v16.18.0)
nvm use default
root@server:/home/cloudvariation.in/public_html/blogar# nvm alias default node
default -> node (-> v16.18.0)
root@server:/home/cloudvariation.in/public_html/blogar# nvm use default
Now using node v16.18.0 (npm v8.19.2)
root@server:/home/cloudvariation.in/public_html/blogar# node -v
v16.18.0This will set the default to be the most current version of node
nvm alias default node
and then you'll need to run
nvm use default
or exit and open a new tab
for a specific version
nvm use v18.12.1
there is file in src > server.js
server.js
const http = require("http");
const app = require("./app");
const port = process.env.PORT || 8088;
// const port = process.env.PORT || 8088;
// const port = process.env.PORT || 8061;
const server = http.createServer(app);
server.listen(port);
console.log("listening at port ", port);
see the port 8088 is defined
and running by netstat -plunt | grep 8088
tcp6 0 0 :::8088 :::* LISTEN 32256/node /home/ap
setting up Nginx as reverse proxy for nodejs
set this for that domain configuration
server {
listen 192.227.69.95:80;
server_name api.globaltrendz.info www.api.globaltrendz.info;
root /home/api.globaltrendz/web/api.globaltrendz.info/public_html;
index index.php index.html index.htm;
access_log /var/log/nginx/domains/api.globaltrendz.info.log combined;
access_log /var/log/nginx/domains/api.globaltrendz.info.bytes bytes;
error_log /var/log/nginx/domains/api.globaltrendz.info.error.log error;
location / {
location ~* ^.+\.(jpeg|jpg|png|gif|bmp|ico|svg|css|js)$ {
expires max;
}
location / {
proxy_pass http://127.0.0.1:8088/;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
# location ~ [^/]\.php(/|$) {
# fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
# if (!-f $document_root$fastcgi_script_name) {
# return 404;
# }
#
# fastcgi_pass 127.0.0.1:9002;
# fastcgi_index index.php;
# include /etc/nginx/fastcgi_params;
# }
}
error_page 403 /error/404.html;
error_page 404 /error/404.html;
error_page 500 502 503 504 /error/50x.html;
}
How to Setup Apache As Frontend Proxy for Node.js
no need to make any changes in config if you need reactjs in frontend
and add the following content.
1 2 3 4 5 6 7 | <VirtualHost *:80> ServerName example.com ProxyPreserveHost On ProxyPass / http://localhost:3000/ ProxyPassReverse / http://localhost:3000/ </VirtualHost> |
For API we created another subdomain and install ssl and then proxy pass using above code
https://api.krishit.com/admin/getOverAllEmployeeRecords
through postman he checked
To ru node js app type node server.js from src location
Running nodejs forever
pm2 start process.json
or
pm2 start processes.json
cat processes.json
{
"apps" : [{
"name" : "Cloud-dhobi-API",
"script" : "./src/server.js",
"watch" : "../",
"log_date_format" : "YYYY-MM-DD HH:mm Z"
}]
}
To list all pm2 process
Install pm2
npm install pm2 -g
With debian, use the install script:
apt update && apt install sudo curl && curl -sL https://raw.githubusercontent.com/Unitech/pm2/master/packager/setup.deb.sh | sudo -E bash -
node app.js
root@server2:/home/hrms.krishit/web/hrms.krishit.com/public_html# node app.js
node:internal/modules/cjs/loader:936
throw err;
^
Error: Cannot find module 'express'
Require stack:
root@server2:/home/hrms.krishit/web/hrms.krishit.com/public_html# npm install express --save
npm ERR! code 126
npm ERR! path /home/hrms.krishit/web/hrms.krishit.com/public_html/node_modules/bcrypt
npm ERR! command failed
npm ERR! command sh -c node-pre-gyp install --fallback-to-build
npm ERR! /usr/bin/env: ‘node’: Permission denied
npm ERR! A complete log of this run can be found in:
npm ERR! /root/.npm/_logs/2022-07-22T15_46_02_128Z-debug.log
root@server2:/home/hrms.krishit/web/hrms.krishit.com/public_html# vi /root/.npm/_logs/2022-07-22T15_46_02_128Z-debug.log
error /usr/bin/env: ‘node’: Permission denied
npm install express
pm2 list
sudo apt-get install node-expressnpm install express
npm install jade
npm install socket.io
Error: Cannot find module 'Cors'
cors c was in capital that why gettting error
Error: getaddrinfo ENOTFOUND api.krishit.com
make local entry in /etc/hosts
192.227.112.108 api.krishit.com vms.krishit.com
root@server:~/.nvm/versions/node# ls
v14.0.0 v14.17.3 v16.17.1 v16.18.0
root@server:~/.nvm/versions/node# pwd
/root/.nvm/versions/node
PM2 using wrong node.js version
autostart nodejs on boot
root@vmi1093744:~# cat /lib/systemd/system/app.service
[Unit]
Description=app
After=multi-user.target
[Service]
Type=idle
ExecStart=/root/.nvm/versions/node/v16.13.2/bin/node /home/alphawa/public_html/api.alpha-media.marketing/app.js
#WorkingDirectory=
User=root
[Install]
WantedBy=multi-user.target
sudo chmod 644 /lib/systemd/system/app.service
sudo systemctl daemon-reload
sudo systemctl enable app.service
sudo systemctl start app.service
sudo systemctl status app.service
to check all node version
nvm ls-remote
nvm install v14.17.3
to check node js installed verions
nvm list
remove nvm
nvm uninstall 18.10.0
For later fellow googlers:
pm2 update
This helped me greatly. Just in case future readers, you can check which node version pm2 is using with this command: pm2 show <appId/ appName>
pm2 monit is another way to check the node version
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