nixConfig/nixos/roles/default.nix

74 lines
1.9 KiB
Nix

{
pkgs,
lib,
...
}: {
imports = [
./admins.nix
./nix.nix
./prometheusNodeExporter.nix
../modules/impermanence.nix
];
networking = {
firewall = {
# these shoud be default, but better make sure!
enable = true;
allowPing = true;
};
nftables.enable = true;
useDHCP = false; # We don't speak DHCP and even if we would, we should enable it per interface
# hosts = # TODO write something to autogenerate ip adresses!
};
users = {
mutableUsers = false;
users.root.hashedPassword = "!";
};
impermanence.enable = true;
sops.age.sshKeyPaths = ["/etc/ssh/ssh_host_ed25519_key"];
# additional trusted keys for substituters for every machine
# right now it is only nodens so nodens can build system configs
# and we can deploy them from nodens.
# For security reasons we might want to move this to the vm part, as
# someone who can get control of nodens and get hold of the build process
# can gain control of the other machines. While this is very handy
# and a step towards CI, we might not want this for backups.
# (This is a tradeof between security and convenience)
nix.settings.trusted-public-keys = ["nodens-deploy.key:VHJmEr17pdoEEnWlSfC03TIf4GBbClxGRiInHuWaUvU="];
environment = {
systemPackages = builtins.attrValues {
inherit
(pkgs)
htop
lsof
tmux
btop
;
};
};
services = {
journald.extraConfig = "SystemMaxUse=5G";
nginx = {
recommendedOptimisation = true;
recommendedGzipSettings = true;
recommendedTlsSettings = true;
};
openssh = {
enable = true;
settings = {
PermitRootLogin = "no";
PasswordAuthentication = false;
};
};
#Prevent clock drift due to interaction problem with xen hardware clock
timesyncd.enable = lib.mkForce true;
};
}