259 lines
8.2 KiB
Nix
259 lines
8.2 KiB
Nix
{ self
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, utils
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, nixpkgs
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, nixpkgs-unstable
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, nixos-generators
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, sops-nix
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, microvm
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, ...
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} @inputs:
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# filter i686-liux from defaultSystem to run nix flake check successfully
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let filter_system = name: if name == utils.lib.system.i686-linux then false else true;
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in (utils.lib.eachSystem (builtins.filter filter_system utils.lib.defaultSystems) ( system:
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let
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pkgs-unstable = nixpkgs-unstable.legacyPackages."${system}";
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pkgs = nixpkgs.legacyPackages."${system}";
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vmMicroVMOverwrites = hostname: options: {
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microvm = {
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mem = pkgs.lib.mkForce 4096;
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hypervisor = pkgs.lib.mkForce "qemu";
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socket = pkgs.lib.mkForce null;
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shares = pkgs.lib.mkForce ([
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{
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tag = "ro-store";
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source = "/nix/store";
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mountPoint = "/nix/.ro-store";
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}
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] ++ pkgs.lib.optionals (options.varPath != "") [
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{
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source = "${options.varPath}";
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securityModel = "mapped";
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mountPoint = "/var";
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tag = "var";
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}
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]);
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interfaces = pkgs.lib.mkIf (!options.withNetworking) (pkgs.lib.mkForce [{
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type = "user";
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id = "eth0";
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mac = "02:23:de:ad:be:ef";
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}]);
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};
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fileSystems = {
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"/".fsType = pkgs.lib.mkForce "tmpfs";
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# prometheus uses a memory mapped file which doesnt seem supported by 9p shares
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# therefore we mount a tmpfs inside the datadir
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"/var/lib/prometheus2/data" = pkgs.lib.mkIf (hostname == "overwatch" && options.varPath != "") (pkgs.lib.mkForce {
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fsType = pkgs.lib.mkForce "tmpfs";
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});
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};
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boot.isContainer = pkgs.lib.mkForce false;
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services.timesyncd.enable = false;
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users.users.root.password = "";
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services.getty.helpLine = ''
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Log in as "root" with an empty password.
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Use "reboot" to shut qemu down.
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'';
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};
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vmDiskoOverwrites = {
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boot.initrd = {
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secrets = pkgs.lib.mkForce {};
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network.ssh.enable = pkgs.lib.mkForce false;
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};
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malobeo.disks.enable = pkgs.lib.mkForce false;
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networking.hostId = "a3c3101f";
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};
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vmSopsOverwrites = host: {
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sops.defaultSopsFile = pkgs.lib.mkForce ./machines/${host}/dummy.yaml;
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environment.etc = {
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devHostKey = {
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source = ./machines/secrets/devkey_ed25519;
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mode = "0600";
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};
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};
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services.openssh.hostKeys = [{
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path = "/etc/devHostKey";
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type = "ed25519";
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}];
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};
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buildVM = host: networking: sopsDummy: disableDisko: varPath: (self.nixosConfigurations.${host}.extendModules {
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modules = [
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(vmMicroVMOverwrites host { withNetworking = networking; varPath = "${varPath}"; })
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(if sopsDummy then (vmSopsOverwrites host) else {})
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(if disableDisko then vmDiskoOverwrites else {})
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] ++ pkgs.lib.optionals (! self.nixosConfigurations.${host}.config ? microvm) [
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microvm.nixosModules.microvm
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];
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}).config.microvm.declaredRunner;
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in
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{
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devShells.default =
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let
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sops = sops-nix.packages."${pkgs.system}";
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microvmpkg = microvm.packages."${pkgs.system}";
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installed = builtins.attrNames self.legacyPackages."${pkgs.system}".scripts;
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in
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pkgs.mkShell {
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sopsPGPKeyDirs = [
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"./machines/secrets/keys/hosts"
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"./machines/secrets/keys/users"
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];
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nativeBuildInputs = [
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sops.ssh-to-pgp
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sops.sops-import-keys-hook
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sops.sops-init-gpg-key
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pkgs.sops
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pkgs.age
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pkgs.python310Packages.grip
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pkgs.mdbook
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microvmpkg.microvm
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];
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packages = builtins.map (pkgName: self.legacyPackages."${pkgs.system}".scripts.${pkgName}) installed;
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shellHook = ''echo "Available scripts: ${builtins.concatStringsSep " " installed}"'';
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};
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legacyPackages = {
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scripts.remote-install = pkgs.writeShellScriptBin "remote-install" (builtins.readFile ./scripts/remote-install-encrypt.sh);
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scripts.boot-unlock = pkgs.writeShellScriptBin "boot-unlock" (builtins.readFile ./scripts/unlock-boot.sh);
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scripts.run-vm = self.packages.${system}.run-vm;
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};
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vmBuilder = buildVM;
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packages = {
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docs = pkgs.stdenv.mkDerivation {
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name = "malobeo-docs";
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phases = [ "buildPhase" ];
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buildInputs = [ pkgs.mdbook ];
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inputs = pkgs.lib.sourceFilesBySuffices ./doc/. [ ".md" ".toml" ];
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buildPhase = ''
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dest=$out/share/doc
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mkdir -p $dest
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cp -r --no-preserve=all $inputs/* ./
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mdbook build
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ls
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cp -r ./book/* $dest
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'';
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};
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run-vm = pkgs.writeShellScriptBin "run-vm" ''
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usage() {
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echo "Usage: run-vm <hostname> [--networking] [--dummy-secrets] [--no-disko]"
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echo "ATTENTION: This script must be run from the flakes root directory"
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echo "--networking setup interfaces. requires root and hostbridge enabled on the host"
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echo "--dummy-secrets run vm with dummy sops secrets"
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echo "--no-disko disable disko and initrd secrets. needed for real hosts like fanny"
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echo "--var path to directory that should be shared as /var. may require root otherwise some systemd units fail within vm. if dir is empty vm will populate"
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exit 1
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}
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# check at least one arg was given
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if [ "$#" -lt 1 ]; then
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usage
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fi
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HOSTNAME=$1
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# Optionale Argumente
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NETWORK=false
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DUMMY_SECRETS=false
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NO_DISKO=false
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VAR_PATH=""
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# check argws
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shift
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while [[ "$#" -gt 0 ]]; do
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case $1 in
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--networking) NETWORK=true ;;
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--dummy-secrets) DUMMY_SECRETS=true ;;
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--no-disko) NO_DISKO=true ;;
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--var)
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if [[ -n "$2" && ! "$2" =~ ^- ]]; then
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VAR_PATH="$2"
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shift
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else
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echo "Error: --var requires a non-empty string argument."
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usage
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fi
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;;
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*) echo "Unknown argument: $1"; usage ;;
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esac
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shift
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done
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echo "starting host $HOSTNAME"
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echo "enable networking: $NETWORK"
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echo "deploy dummy secrets: $DUMMY_SECRETS"
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echo "disable disko and initrd secrets: $NO_DISKO"
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if [ -n "$VAR_PATH" ]; then
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echo "sharing var directory: $VAR_PATH"
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fi
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${pkgs.nix}/bin/nix run --show-trace --impure --expr "((builtins.getFlake \"$(pwd)\").vmBuilder.x86_64-linux \"$HOSTNAME\" $NETWORK $DUMMY_SECRETS $NO_DISKO \"$VAR_PATH\")"
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'';
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};
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apps = {
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docs = {
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type = "app";
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program = builtins.toString (pkgs.writeShellScript "docs" ''
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${pkgs.xdg-utils}/bin/xdg-open "${self.packages.${system}.docs}/share/doc/index.html"
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'');
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};
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docsDev = {
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type = "app";
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program = builtins.toString (pkgs.writeShellScript "docs" ''
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echo "needs to run from infrastuctre root folder"
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${pkgs.mdbook}/bin/mdbook serve --open ./doc
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'');
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};
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run-vm = {
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type = "app";
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program = "${self.packages.${system}.run-vm}/bin/run-vm";
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};
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};
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})) // {
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nixosConfigurations = import ./machines/configuration.nix (inputs // {
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inherit inputs;
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self = self;
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});
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nixosModules.malobeo = {
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host.imports = [ ./machines/durruti/host_config.nix ];
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microvm.imports = [ ./machines/modules/malobeo/microvm_host.nix ];
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vpn.imports = [ ./machines/modules/malobeo/wireguard.nix ];
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initssh.imports = [ ./machines/modules/malobeo/initssh.nix ];
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metrics.imports = [ ./machines/modules/malobeo/metrics.nix ];
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disko.imports = [ ./machines/modules/disko ];
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};
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hydraJobs = nixpkgs.lib.mapAttrs (_: nixpkgs.lib.hydraJob) (
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let
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getBuildEntry = name: nixosSystem:
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if (nixpkgs.lib.hasPrefix "sdImage" name) then
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nixosSystem.config.system.build.sdImage
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else
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nixosSystem.config.system.build.toplevel;
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in
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nixpkgs.lib.mapAttrs getBuildEntry self.nixosConfigurations
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);
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}
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