My Own Dns Server

How to use ?

For calculation:-

dig @dns.deploylite.tech MX calculate.2+2
#feel free to change 2+2 to something else 
dig @dns.deploylite.tech MX calculate.2+2 +short

For generating random number:-

dig @dns.deploylite.tech MX generate-random.rand
#using +short
dig @dns.deploylite.tech MX generate-random.rand +short

For getting any timezone:-

dig @dns.deploylite.tech MX timezone.ASIA/KOLKATA
#using +short
dig @dns.deploylite.tech MX timezone.ASIA/KOLKATA +short
dig @dns.deploylite.tech MX timezone.US/Pacific +short
dig @dns.deploylite.tech MX timezone.Singapore +short
#you can use any time zone for the query?
#for supported timezone visist:-https://timeapi.io/api/timezone/availabletimezones

For ai response . Ask anything to ai:-

dig @dns.deploylite.tech MX ai.what.is.dns +short
#Modify this query . And if you have space on your prompt add .
dig @dns.deploylite.tech MX ai.what.is.js +short

For Piyush Sir's Playlist recommendation: Ask your query about the resources you need for a tutorial, and you'll get a full-fledged playlist curated by Piyush Sir:-

dig @dns.deploylite.tech MX tutorial.nextjs +short
dig @dns.deploylite.tech MX tutorial.advanced.js +short
#feel free to ask what do you want.
dig @dns.deploylite.tech MX tutorial.appwrite +short
#gives and not found message if it's not there

For Piyush Sir's Course recommendation: Ask your query:-

dig @dns.deploylite.tech MX course.docker +short
dig @dns.deploylite.tech MX course.nextjs +short
#feel free to ask of your choice
dig @dns.deploylite.tech MX course.web.dev.cohort +short

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Currently, these features are available, with more exciting features coming soon.

Here is a step by step guide how to deploy your own dns server .

How to Deploy ?

1. Start an ec2 instance and below run the commands to cotinue

allow 53 port in security group - > custom udp → 53 → allow access from anywhere

sudo apt update && upgrade -y

Install nodejs

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
source ~/.bashrc
nvm install v21.7.0

Clone Your repo

git clone repo_url
cd repo_folder
npm i

Basic Configuration for opening port 53. I see that systemd-resolved is using port 53. Let's disable it and free up the port:

1. First, stop and disable systemd-resolved:

sudo systemctl stop systemd-resolved
sudo systemctl disable systemd-resolved

You might need to update your DNS resolver settings. Edit /etc/resolv.conf:

sudo nano /etc/resolv.conf

Replace its contents with:

nameserver 8.8.8.8  # Google DNS
nameserver 8.8.4.4  # Google DNS backup

To prevent systemd-resolved from starting again on reboot:

sudo systemctl mask systemd-resolved

If you get permission errors, make sure you've set the capabilities correctly:

sudo setcap cap_net_bind_service=+ep $(which node)

Start the dns server on background. Install Pm2.

npm i -g pm2

pm2 start "node index.js" --name dns

pm2 save

Congratulations Your Server is up and running.

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