nixos/lxd: add preseed option (a90385c6) · Commits · nix / nixpkgs

nixos/modules/virtualisation/lxd.nix

+75 −0

Original line number	Diff line number	Diff line
		@@ -4,6 +4,7 @@

		let
		cfg = config.virtualisation.lxd;
		preseedFormat = pkgs.formats.yaml {};
		in {
		imports = [
		(lib.mkRemovedOptionModule [ "virtualisation" "lxd" "zfsPackage" ] "Override zfs in an overlay instead to override it globally")
		@@ -73,6 +74,65 @@ in {
		'';
		};

		preseed = lib.mkOption {
		type = lib.types.nullOr (lib.types.submodule {
		freeformType = preseedFormat.type;
		});

		default = null;

		description = lib.mdDoc ''
		Configuration for LXD preseed, see
		<https://documentation.ubuntu.com/lxd/en/latest/howto/initialize/#initialize-preseed>
		for supported values.

		Changes to this will be re-applied to LXD which will overwrite existing entities or create missing ones,
		but entities will not be removed by preseed.
		'';

		example = lib.literalExpression ''
		{
		networks = [
		{
		name = "lxdbr0";
		type = "bridge";
		config = {
		"ipv4.address" = "10.0.100.1/24";
		"ipv4.nat" = "true";
		};
		}
		];
		profiles = [
		{
		name = "default";
		devices = {
		eth0 = {
		name = "eth0";
		network = "lxdbr0";
		type = "nic";
		};
		root = {
		path = "/";
		pool = "default";
		size = "35GiB";
		type = "disk";
		};
		};
		}
		];
		storage_pools = [
		{
		name = "default";
		driver = "dir";
		config = {
		source = "/var/lib/lxd/storage-pools/default";
		};
		}
		];
		}
		'';
		};

		startTimeout = lib.mkOption {
		type = lib.types.int;
		default = 600;
		@@ -176,6 +236,21 @@ in {
		};
		};

		systemd.services.lxd-preseed = lib.mkIf (cfg.preseed != null) {
		description = "LXD initialization with preseed file";
		wantedBy = ["multi-user.target"];
		requires = ["lxd.service"];
		after = ["lxd.service"];

		script = ''
		${pkgs.coreutils}/bin/cat ${preseedFormat.generate "lxd-preseed.yaml" cfg.preseed} \| ${cfg.package}/bin/lxd init --preseed
		'';

		serviceConfig = {
		Type = "oneshot";
		};
		};

		users.groups.lxd = {};

		users.users.root = {

nixos/tests/lxd/container.nix

+3 −0

Original line number	Diff line number	Diff line
		@@ -49,6 +49,9 @@ in {
		# Wait for lxd to settle
		machine.succeed("lxd waitready")

		# no preseed should mean no service
		machine.fail("systemctl status lxd-preseed.service")

		machine.succeed("lxd init --minimal")

		machine.succeed(

nixos/tests/lxd/default.nix

+1 −0

Original line number	Diff line number	Diff line
		@@ -5,6 +5,7 @@
		}: {
		container = import ./container.nix {inherit system pkgs;};
		nftables = import ./nftables.nix {inherit system pkgs;};
		preseed = import ./preseed.nix {inherit system pkgs;};
		ui = import ./ui.nix {inherit system pkgs;};
		virtual-machine = import ./virtual-machine.nix { inherit system pkgs; };
		}

nixos/tests/lxd/preseed.nix

0 → 100644

+71 −0

Original line number	Diff line number	Diff line
		import ../make-test-python.nix ({ pkgs, lib, ... } :

		{
		name = "lxd-preseed";

		meta = {
		maintainers = with lib.maintainers; [ adamcstephens ];
		};

		nodes.machine = { lib, ... }: {
		virtualisation = {
		diskSize = 4096;

		lxc.lxcfs.enable = true;
		lxd.enable = true;

		lxd.preseed = {
		networks = [
		{
		name = "nixostestbr0";
		type = "bridge";
		config = {
		"ipv4.address" = "10.0.100.1/24";
		"ipv4.nat" = "true";
		};
		}
		];
		profiles = [
		{
		name = "nixostest_default";
		devices = {
		eth0 = {
		name = "eth0";
		network = "nixostestbr0";
		type = "nic";
		};
		root = {
		path = "/";
		pool = "default";
		size = "35GiB";
		type = "disk";
		};
		};
		}
		];
		storage_pools = [
		{
		name = "nixostest_pool";
		driver = "dir";
		}
		];
		};
		};
		};

		testScript = ''
		def wait_for_preseed(_) -> bool:
		_, output = machine.systemctl("is-active lxd-preseed.service")
		return ("inactive" in output)

		machine.wait_for_unit("sockets.target")
		machine.wait_for_unit("lxd.service")
		with machine.nested("Waiting for preseed to complete"):
		retry(wait_for_preseed)

		with subtest("Verify preseed resources created"):
		machine.succeed("lxc profile show nixostest_default")
		machine.succeed("lxc network info nixostestbr0")
		machine.succeed("lxc storage show nixostest_pool")
		'';
		})

Admin message