In this tutorial, we will be discussing the steps to install CoreDNS on nixOS. CoreDNS is a DNS server that is used as a middleware for service discovery, load balancing, and other purposes. We will be using nixOS as the operating system, which is a Linux-based distribution.
Before proceeding with the installation process, you need to make sure that your system meets the following prerequisites:
To install CoreDNS on nixOS, follow the steps below:
Open a terminal window on your system.
Run the following command to update the package list:
sudo nix-channel --update
Run the following command to install the CoreDNS package:
sudo nix-env -iA nixos.coredns
This command will download and install the latest version of CoreDNS on your system.
Once you have installed the CoreDNS package, the next step is to configure it. You can use the default configuration file provided by CoreDNS or create a custom configuration file.
To use the default configuration file, run the following command:
sudo cp /nix/store/<coredns-version>/share/examples/coredns/Corefile /etc/coredns/Corefile
Replace <coredns-version> with the version of CoreDNS that has been installed on your system.
To create a custom configuration file, you can use any text editor of your choice to create a file with the following contents:
. {
forward . <your-upstream-dns-server>
}
Replace <your-upstream-dns-server> with the IP address of the upstream DNS server you want to use.
Save the file as /etc/coredns/Corefile.
Once you have configured CoreDNS, the final step is to start the service. To start CoreDNS, use the following command:
sudo systemctl start coredns
You can also enable CoreDNS to start automatically at boot time by running the following command:
sudo systemctl enable coredns
CoreDNS is now installed and configured on your nixOS system. You can start using it as your DNS server. If you face any issues or need further help, refer to the official documentation on https://coredns.io/.
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