cerulean/nix/nixos/remote-deploy/default.nix
2026-03-08 17:30:32 +10:00

82 lines
2.2 KiB
Nix

{
config,
node,
lib,
pkgs,
hostname,
...
}: let
user = node.deploy.ssh.user;
cfg = config.users.users.${user};
DEFAULT_USER = "cerubld";
isStandardDeployUser = user == DEFAULT_USER;
in {
assertions = [
{
assertion = builtins.length node.deploy.ssh.publicKeys != 0;
message = ''
The Cerulean deployment user `${user}` for node `${hostname}` must have at least
one publicKey authorized for ssh deployment! Try setting `nodes.nodes.<name>.deploy.ssh.publicKeys = [ ... ]` <3
'';
}
# {
# assertion = cfg.isSystemUser && !cfg.isNormalUser;
# message = ''
# The Cerulean deployment user `${user}` for node `${hostname}` has been configured incorrectly.
# Ensure `users.users.${user}.isSystemUser == true` and `users.users.${user}.isNormalUser == false`.
# '';
# }
];
warnings = lib.optional (node.deploy.warnNonstandardDeployUser && !isStandardDeployUser) ''
The Cerulean deplyment user `${user}` for node `${hostname}` has been overriden.
It is recommended to leave this user as `${DEFAULT_USER}` unless you TRULY understand what you are doing!
This message can be disabled by setting `<node>.deploy.warnNonstandardBuildUser = false`.
'';
# prefer sudo-rs over sudo
security.sudo-rs = {
enable = true;
wheelNeedsPassword = true;
# allow the build user to run nix commands
extraRules = [
{
users = [user];
runAs = "${node.deploy.user}:ALL";
commands = [
# "${pkgs.nix}/bin/nix"
"ALL" # XXX: WARNING: FIX: TODO: DO NOT FUCKING USE `ALL`
];
}
];
};
# XXX: WARNING: FIX: TODO: use `trusted-public-keys` instead
nix.settings.trusted-users = [user];
# ensure deployment user has SSH permissions
services.openssh.settings.AllowUsers = [user];
users = lib.mkIf isStandardDeployUser {
groups.${user} = {};
users.${user} = {
enable = true;
description = "Cerulean's user for building and remote deployment.";
isSystemUser = true;
group = user;
createHome = true;
home = "/var/lib/cerulean/cerubld";
useDefaultShell = false;
shell = pkgs.bash;
openssh.authorizedKeys.keys = node.deploy.ssh.publicKeys;
};
};
}