clan-infra/modules/hetzner-ex101.nix

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{ pkgs, ... }: {
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# Enable raid support specifically, this will disable srvos's
# systemd-initrd as well, which currently is not compatible with mdraid.
boot.initrd.services.swraid.enable = true;
systemd.services.mdmonitor.enable = false;
boot.loader.systemd-boot.enable = true;
boot.loader.efi.canTouchEfiVariables = true;
# We are not limited by zfs, so we can use the latest kernel
boot.kernelPackages = pkgs.linuxPackages_latest;
# looks like the Intel i9-13900 draws too much power and crashes the system
systemd.services.limit-cpu-freq = {
description = "Limit CPU frequency to 4.2GHz";
wantedBy = [ "multi-user.target" ];
after = [ "systemd-modules-load.service" ];
# Some cores do have a scaling max freq less than 5GHz, so we need to
# check for that or else all cores will run at 800MHz
script = ''
#!/bin/sh
for f in /sys/devices/system/cpu/cpu*/cpufreq/scaling_max_freq; do
old_val="$(<"$f")"
if [[ "$old_val" -gt 4200000 ]]; then
echo 4200000 > "$f"
fi
done
'';
serviceConfig = {
Type = "oneshot";
};
};
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}