NixOS Configurations

Personal NixOS configs, you may find this useful as a reference. Currently uses flakes and agenix, might expand into using Home Manager and/or NixOps.

Systems

• HydraValley (Unused): 7840hs mini-pc, docker host
• HydraValley.bak (Unused): 7840hs mini-pc, developement environment which uses the Plasma DE
• JellyCoast (Unused): LXC container, single purpose Jellyfin node
• OrcaStrait: LXC container, docker host
• SalamanderGrotto (Unused): LXC container, single purpose Jellyseer node
• RaccoonRapids (Unused): LXC container, single purpose Syncthing node

Note: This repository contains no longer used configs, these may or may not still work, and were left in as reference material.

Usage

Currently, I run nixos-rebuild switch --flake github:baconfield/nixconfig#TargetHostname to build and switch to a specific config. Whenever I make changes to the repo, nix-store --gc is run to clear the outdated flake.

Updating flakes

First make sure your local nix config is setup to use the experimental feature. In either ~/.config/nix/nix.conf or /etc/nix/nix.conf:

experimental-features = nix-command flakes

or on NixOS:

{ pkgs, ... }: {
    nix.settings.experimental-features = [ "nix-command" "flakes" ];
}

After that, you can run nix flake update to update the flake.lock file.

Modifying secrets

From within secrets/, you can configure keys using secrets.nix, and modify the secrets with the following commands:

# Modifying a secret
nix run github:ryantm/agenix -- -e {secret}.age
# Rekeying the secrets
nix run github:ryantm/agenix -- -r

Proxmox template

Creating your own template might be the most friction-free route to getting NixOS containers on Proxmox. After creating a container with the template, I'd recommend configuring that with a bare minimum config and creating a new template from that. For more details, see here.

# Generate an LXC template to upload to a Proxmox server
nix run github:nix-community/nixos-generators -- --format proxmox-lxc

# Basic config
{ pkgs, modulesPath, ... }:

{
  imports = [
    (modulesPath + "/virtualisation/proxmox-lxc.nix")
  ];

  environment.systemPackages = with pkgs; [
    git
    vim
  ];

  nix.settings.experimental-features = "nix-command flakes";

  system.stateVersion = "23.11"
}

command-not-found unable to open database

As root:

nix-channel --add https://nixos.org/channels/nixos-unstable nixos
nix-channel --update