How to Install djbdns from http://cr.yp.to/djbdns.html on Ubuntu Server Latest

Step 1: Install Dependencies

Before installing djbdns, you need to install the required dependencies. Run the following command:

sudo apt-get install daemontools daemontools-run ucspi-tcp ucspi-proxy

Step 2: Download and Install djbdns

1. Create a directory for djbdns installation and switch to it:

sudo mkdir /usr/local/src/djbdns
cd /usr/local/src/djbdns

2. Download the djbdns package from the official website:

sudo wget -O djbdns.tar.gz http://cr.yp.to/djbdns/djbdns-1.05.tar.gz

3. Extract the package:

sudo tar -zxvf djbdns.tar.gz

4. Change to the extracted directory:

cd djbdns-1.05

5. Compile and install the package:

sudo make setup check

Step 3: Configure djbdns

1. Create a file named root in the /var/lib/dnscache directory:

sudo mkdir /var/lib/dnscache
sudo touch /var/lib/dnscache/root

2. Create the /etc/dnscache directory and its subdirectories:

sudo mkdir -p /etc/dnscache/log/main
sudo mkdir -p /etc/dnscache/env
sudo mkdir -p /etc/dnscache/root/servers

3. Create a file named servers in the /etc/dnscache/root directory and add the following line to it:

127.0.0.1

4. Create the /etc/dnscache/env/IP file and add the IP address of the primary DNS server you want to use:

echo "1.2.3.4" | sudo tee /etc/dnscache/env/IP

5. Create the /etc/dnscache/env/FORWARDONLY file and add the following line to it:

1

6. Create the /etc/dnscache/env/CACHESIZE file and add the maximum amount of memory, in bytes, that you want dnscache to use for caching queries. For example:

echo "100000" | sudo tee /etc/dnscache/env/CACHESIZE

Step 4: Start and Enable djbdns

1. Start the dnscache and tinydns services:

sudo svscan /service

2. Enable the services to start at boot time:

sudo update-service add /service/dnscache
sudo update-service add /service/tinydns

Conclusion

You have successfully installed and configured djbdns on your Ubuntu server. You can now use it as your primary DNS server.

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