NixOS configuration for HPC cluster https://docs.hpc.informatik.hs-fulda.de/
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# TFTP boot with shared image
# Requests store path to install from master
# Runs disko and nixos-install
{ pkgs, lib, config, nodes, ... }@args:
with lib;
let
targets = {
"50:46:5d:da:0b:d6" = "node-00";
"50:46:5d:da:0c:56" = "node-01";
"10:bf:48:1f:a6:8f" = "node-02";
"10:bf:48:1b:57:47" = "node-03";
"10:bf:48:19:a2:4d" = "node-04";
"10:bf:48:1b:56:df" = "node-05";
"50:46:5d:da:0c:52" = "node-06";
};
installer = pkgs.nixos [
./installer.nix
{
_module.args = {
nodes = getAttrs [ "manager" ] nodes;
};
}
];
apiEntry = name:
let
node = nodes.${name}.config.system.build;
boot = installer.config.system.build;
install = pkgs.writeScript "install-${name}" ''
#!/usr/bin/env bash
set -xeuo pipefail
"${node.diskoScript}"
"${node.nixos-install}/bin/nixos-install" \
--root /mnt \
--system "${node.toplevel}" \
--no-channel-copy \
--no-root-password \
--verbose
reboot
'';
in
pkgs.writeText "pixieboot-api-${name}" (builtins.toJSON {
kernel = "file://${boot.kernel}/bzImage";
initrd = [ "file://${boot.netbootRamdisk}/initrd" ];
cmdline = concatStringsSep " " [
"init=${boot.toplevel}/init"
"loglevel=4"
"nixos.install=${install}"
];
message = "NixOS Automatic Installer for ${name}";
});
api = pkgs.linkFarm "pixiecore-api" (mapAttrs'
(mac: name: nameValuePair "pixiecore/v1/boot/${mac}" (apiEntry name))
targets);
in
{
services.pixiecore = {
enable = true;
mode = "api";
dhcpNoBind = true;
debug = true;
openFirewall = true;
port = 5080;
statusPort = 6080;
apiServer = "http://boot.${config.networking.domain}/pixiecore";
};
services.nginx = {
virtualHosts = {
"boot.${config.networking.domain}" = {
locations."/".proxyPass = "http://localhost:${toString config.services.pixiecore.port}";
locations."/status".proxyPass = "http://localhost:${toString config.services.pixiecore.statusPort}";
locations."/pixiecore".root = api;
};
};
};
services.dhcpd4 = {
enable = true;
interfaces = [ "enp11s0f0" ];
extraConfig = ''
option domain-name-servers 10.0.0.53, 10.1.1.10;
option domain-name "${config.networking.domain}";
subnet 10.32.47.0 netmask 255.255.255.0 {
interface enp11s0f0;
range 10.32.47.200 10.32.47.230;
option routers 10.32.47.1;
}
'';
};
hpc.hostFile.aliases = [
"boot.${config.networking.domain}"
];
}