How to Install Nomad on NixOS Latest

In this tutorial, we will guide you on how to install Nomad on NixOS latest. Nomad is an open-source, modern, and flexible automated workload orchestrator that enables users to deploy and manage any application or service at any scale.

Prerequisites

Before we start, make sure you have the following prerequisites:

• A running instance of NixOS latest version.
• Basic knowledge of the command line.

Step 1 - Install Nomad on NixOS

First, let's ensure that the NixOS system is up to date, by running the following command:

$ sudo nix-channel --update
$ sudo nix-env -iA nixpkgs.nomad

The above commands update the NixOS system, then install Nomad package.

Step 2 - Verify Nomad Installation

To verify that Nomad is installed and working properly, run the following command:

$ nomad version

This command will display the version of Nomad that is installed on your system.

Step 3 - Configure Nomad

Next, we will configure Nomad by creating a config file. Here's how to do it:

$ mkdir -p /etc/nomad.d
$ vim /etc/nomad.d/nomad.hcl

This command creates the nomad.d directory (if it doesn't already exist), and then creates and opens the nomad.hcl config file using the VIM text editor. You can use any text editor of your choice.

Paste the following content in the nomad.hcl file:

data_dir      = "/var/lib/nomad"
log_level     = "WARN"
server        = true
bootstrap_expect = 1
advertise {
  http = "<SERVER_IP>:4646"
  rpc  = "<SERVER_IP>:4647"
  serf = "<SERVER_IP>:4648"
}

Replace <SERVER_IP> with the IP address of your server. This configuration tells Nomad to store data in /var/lib/nomad. The log level is set to WARN and the server is set to true. The bootstrap_expect is set to 1 - this tells Nomad to expect a single server in the cluster. Finally, the advertise block is used to set the IP address and ports that Nomad will use for HTTP, RPC, and Serf gossip communication.

Step 4 - Start Nomad

Now, start Nomad with the following command:

$ sudo systemctl start nomad

Nomad should now be running!

Step 5 - Verify Nomad Status

To verify the status of Nomad, run the following command:

$ nomad node-status

This will show you the status of all the nodes currently registered with Nomad. If everything is working correctly, this will show a list of all the nodes, their status, and their Allocs.

Conclusion

We have successfully installed Nomad on NixOS latest using this tutorial. You can now use Nomad to deploy and manage any application or workload at any scale. Happy orchestrating!