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|
{ config, pkgs, lib, ... }:
{
imports =
[
./base.nix
./users/chris.nix
];
documentation.nixos.enable = false;
documentation.enable = false;
documentation.info.enable = false;
documentation.man.enable = false;
environment.variables.BROWSER = "echo";
nix.settings.trusted-users = [ "root" "@wheel" ];
time.timeZone = lib.mkDefault "UTC";
systemd = {
# Given that our systems are headless, emergency mode is useless.
# We prefer the system to attempt to continue booting so
# that we can hopefully still access it remotely.
enableEmergencyMode = false;
# For more detail, see:
# https://0pointer.de/blog/projects/watchdog.html
watchdog = {
# systemd will send a signal to the hardware watchdog at half
# the interval defined here, so every 10s.
# If the hardware watchdog does not get a signal for 20s,
# it will forcefully reboot the system.
runtimeTime = "20s";
# Forcefully reboot if the final stage of the reboot
# hangs without progress for more than 30s.
# For more info, see:
# https://utcc.utoronto.ca/~cks/space/blog/linux/SystemdShutdownWatchdog
rebootTime = "30s";
};
sleep.extraConfig = ''
AllowSuspend=no
AllowHibernation=no
'';
};
systemd.services.NetworkManager-wait-online.enable = false;
systemd.network.wait-online.enable = false;
systemd.services.systemd-networkd.stopIfChanged = false;
systemd.services.systemd-resolved.stopIfChanged = false;
nix.settings.max-free = lib.mkDefault (1000 * 1000 * 1000);
nix.settings.min-free = lib.mkDefault (128 * 1000 * 1000);
# TODO: cargo culted.
nix.daemonCPUSchedPolicy = lib.mkDefault "batch";
nix.daemonIOSchedClass = lib.mkDefault "idle";
nix.daemonIOSchedPriority = lib.mkDefault 7;
# My servers always use /dev/sda as boot disk...
boot = {
kernelPackages = pkgs.linuxPackages_latest;
loader = {
grub = {
enable = true;
version = 2;
devices = [ "/dev/sda" ]; # nodev for EFI only
# EFI
efiSupport = false;
efiInstallAsRemovable = false;
};
timeout = 1;
};
};
networking = {
hostName = lib.mkDefault "Rory-nix-base-server";
networkmanager.enable = false;
useNetworkd = true;
wireless.enable = false;
enableIPv6 = false;
firewall = {
enable = false;
# allowedTCPPorts = [ ... ];
# allowedUDPPorts = [ ... ];
};
useDHCP = false;
# nameservers = [ "1.1.1.1" "1.0.0.1" "8.8.8.8" "8.4.4.8" ];
nameservers = [ "10.10.0.4" "10.10.0.5" ];
defaultGateway = "192.168.1.1";
};
sound.enable = false;
hardware.pulseaudio.enable = false;
i18n.defaultLocale = "en_US.UTF-8";
services = {
prometheus = {
exporters = {
node = {
enable = true;
port = 9100;
enabledCollectors = [
"logind"
"systemd"
];
disabledCollectors = [
"textfile"
"xfs"
"zfs"
"selinux"
"cpufreq"
"btrfs"
"powersupplyclass"
"mdadm"
];
};
};
};
promtail = {
enable = true;
configuration = {
server = {
http_listen_port = 3031;
grpc_listen_port = 0;
};
positions = {
filename = "/tmp/positions.yaml";
};
clients = [{
url = "https://loki.regional.seian.cloud/loki/api/v1/push";
}];
scrape_configs = [{
job_name = "journal";
journal = {
max_age = "12h";
labels = {
job = "systemd-journal";
host = "${toString config.networking.hostName}";
};
};
relabel_configs = [{
source_labels = [ "__journal__systemd_unit" ];
target_label = "unit";
}];
}];
};
};
};
}
|
