nixos-servers/nixos/modules/k3s/default.nix

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{ pkgs, lib, config, kubenix, ... }:
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let cfg = config.lab.k3s;
in {
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options.lab.k3s.enable = lib.mkOption {
default = false;
type = lib.types.bool;
description = ''
Whether to start k3s with custom configuration.
'';
};
config = lib.mkIf cfg.enable {
environment.systemPackages = [ pkgs.k3s ];
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networking.firewall.allowedTCPPorts = [ 6443 ];
services.k3s = {
enable = true;
role = "server";
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extraFlags = "--tls-san ${config.networking.fqdn} --data-dir ${config.lab.dataDisk.mountPoint}/k3s";
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};
system.activationScripts.k3s-bootstrap.text =
let
k3sBootstrapFile = (kubenix.evalModules.x86_64-linux {
module = import ./bootstrap.nix;
}).config.kubernetes.result;
in
''
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ln -sf ${k3sBootstrapFile} ${config.lab.dataDisk.mountPoint}/k3s/server/manifests/k3s-bootstrap.json
'';
};
}