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nixpkgs/nixos/modules/services/networking/headscale.nix
Motiejus Jakštys 28cf78b857 headscale.oidc: client_secret_path is a string
It can be include an environment-variable, like
`${CREDENTIALS_DIRECTORY}/some-path`, failing validation for
`types.path`.
2023-08-14 13:03:06 +03:00

532 lines
20 KiB
Nix

{
config,
lib,
pkgs,
...
}:
with lib; let
cfg = config.services.headscale;
dataDir = "/var/lib/headscale";
runDir = "/run/headscale";
settingsFormat = pkgs.formats.yaml {};
configFile = settingsFormat.generate "headscale.yaml" cfg.settings;
in {
options = {
services.headscale = {
enable = mkEnableOption (lib.mdDoc "headscale, Open Source coordination server for Tailscale");
package = mkOption {
type = types.package;
default = pkgs.headscale;
defaultText = literalExpression "pkgs.headscale";
description = lib.mdDoc ''
Which headscale package to use for the running server.
'';
};
user = mkOption {
default = "headscale";
type = types.str;
description = lib.mdDoc ''
User account under which headscale runs.
::: {.note}
If left as the default value this user will automatically be created
on system activation, otherwise you are responsible for
ensuring the user exists before the headscale service starts.
:::
'';
};
group = mkOption {
default = "headscale";
type = types.str;
description = lib.mdDoc ''
Group under which headscale runs.
::: {.note}
If left as the default value this group will automatically be created
on system activation, otherwise you are responsible for
ensuring the user exists before the headscale service starts.
:::
'';
};
address = mkOption {
type = types.str;
default = "127.0.0.1";
description = lib.mdDoc ''
Listening address of headscale.
'';
example = "0.0.0.0";
};
port = mkOption {
type = types.port;
default = 8080;
description = lib.mdDoc ''
Listening port of headscale.
'';
example = 443;
};
settings = mkOption {
description = lib.mdDoc ''
Overrides to {file}`config.yaml` as a Nix attribute set.
Check the [example config](https://github.com/juanfont/headscale/blob/main/config-example.yaml)
for possible options.
'';
type = types.submodule {
freeformType = settingsFormat.type;
options = {
server_url = mkOption {
type = types.str;
default = "http://127.0.0.1:8080";
description = lib.mdDoc ''
The url clients will connect to.
'';
example = "https://myheadscale.example.com:443";
};
private_key_path = mkOption {
type = types.path;
default = "${dataDir}/private.key";
description = lib.mdDoc ''
Path to private key file, generated automatically if it does not exist.
'';
};
noise.private_key_path = mkOption {
type = types.path;
default = "${dataDir}/noise_private.key";
description = lib.mdDoc ''
Path to noise private key file, generated automatically if it does not exist.
'';
};
derp = {
urls = mkOption {
type = types.listOf types.str;
default = ["https://controlplane.tailscale.com/derpmap/default"];
description = lib.mdDoc ''
List of urls containing DERP maps.
See [How Tailscale works](https://tailscale.com/blog/how-tailscale-works/) for more information on DERP maps.
'';
};
paths = mkOption {
type = types.listOf types.path;
default = [];
description = lib.mdDoc ''
List of file paths containing DERP maps.
See [How Tailscale works](https://tailscale.com/blog/how-tailscale-works/) for more information on DERP maps.
'';
};
auto_update_enable = mkOption {
type = types.bool;
default = true;
description = lib.mdDoc ''
Whether to automatically update DERP maps on a set frequency.
'';
example = false;
};
update_frequency = mkOption {
type = types.str;
default = "24h";
description = lib.mdDoc ''
Frequency to update DERP maps.
'';
example = "5m";
};
};
ephemeral_node_inactivity_timeout = mkOption {
type = types.str;
default = "30m";
description = lib.mdDoc ''
Time before an inactive ephemeral node is deleted.
'';
example = "5m";
};
db_type = mkOption {
type = types.enum ["sqlite3" "postgres"];
example = "postgres";
default = "sqlite3";
description = lib.mdDoc "Database engine to use.";
};
db_host = mkOption {
type = types.nullOr types.str;
default = null;
example = "127.0.0.1";
description = lib.mdDoc "Database host address.";
};
db_port = mkOption {
type = types.nullOr types.port;
default = null;
example = 3306;
description = lib.mdDoc "Database host port.";
};
db_name = mkOption {
type = types.nullOr types.str;
default = null;
example = "headscale";
description = lib.mdDoc "Database name.";
};
db_user = mkOption {
type = types.nullOr types.str;
default = null;
example = "headscale";
description = lib.mdDoc "Database user.";
};
db_password_file = mkOption {
type = types.nullOr types.path;
default = null;
example = "/run/keys/headscale-dbpassword";
description = lib.mdDoc ''
A file containing the password corresponding to
{option}`database.user`.
'';
};
db_path = mkOption {
type = types.nullOr types.str;
default = "${dataDir}/db.sqlite";
description = lib.mdDoc "Path to the sqlite3 database file.";
};
log.level = mkOption {
type = types.str;
default = "info";
description = lib.mdDoc ''
headscale log level.
'';
example = "debug";
};
log.format = mkOption {
type = types.str;
default = "text";
description = lib.mdDoc ''
headscale log format.
'';
example = "json";
};
dns_config = {
nameservers = mkOption {
type = types.listOf types.str;
default = ["1.1.1.1"];
description = lib.mdDoc ''
List of nameservers to pass to Tailscale clients.
'';
};
override_local_dns = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc ''
Whether to use [Override local DNS](https://tailscale.com/kb/1054/dns/).
'';
example = true;
};
domains = mkOption {
type = types.listOf types.str;
default = [];
description = lib.mdDoc ''
Search domains to inject to Tailscale clients.
'';
example = ["mydomain.internal"];
};
magic_dns = mkOption {
type = types.bool;
default = true;
description = lib.mdDoc ''
Whether to use [MagicDNS](https://tailscale.com/kb/1081/magicdns/).
Only works if there is at least a nameserver defined.
'';
example = false;
};
base_domain = mkOption {
type = types.str;
default = "";
description = lib.mdDoc ''
Defines the base domain to create the hostnames for MagicDNS.
{option}`baseDomain` must be a FQDNs, without the trailing dot.
The FQDN of the hosts will be
`hostname.namespace.base_domain` (e.g.
`myhost.mynamespace.example.com`).
'';
};
};
oidc = {
issuer = mkOption {
type = types.str;
default = "";
description = lib.mdDoc ''
URL to OpenID issuer.
'';
example = "https://openid.example.com";
};
client_id = mkOption {
type = types.str;
default = "";
description = lib.mdDoc ''
OpenID Connect client ID.
'';
};
client_secret_path = mkOption {
type = types.nullOr types.str;
default = null;
description = lib.mdDoc ''
Path to OpenID Connect client secret file. Expands environment variables in format ''${VAR}.
'';
};
scope = mkOption {
type = types.listOf types.str;
default = ["openid" "profile" "email"];
description = lib.mdDoc ''
Scopes used in the OIDC flow.
'';
};
extra_params = mkOption {
type = types.attrsOf types.str;
default = { };
description = lib.mdDoc ''
Custom query parameters to send with the Authorize Endpoint request.
'';
example = {
domain_hint = "example.com";
};
};
allowed_domains = mkOption {
type = types.listOf types.str;
default = [ ];
description = lib.mdDoc ''
Allowed principal domains. if an authenticated user's domain
is not in this list authentication request will be rejected.
'';
example = [ "example.com" ];
};
allowed_users = mkOption {
type = types.listOf types.str;
default = [ ];
description = lib.mdDoc ''
Users allowed to authenticate even if not in allowedDomains.
'';
example = [ "alice@example.com" ];
};
strip_email_domain = mkOption {
type = types.bool;
default = true;
description = lib.mdDoc ''
Whether the domain part of the email address should be removed when generating namespaces.
'';
};
};
tls_letsencrypt_hostname = mkOption {
type = types.nullOr types.str;
default = "";
description = lib.mdDoc ''
Domain name to request a TLS certificate for.
'';
};
tls_letsencrypt_challenge_type = mkOption {
type = types.enum ["TLS-ALPN-01" "HTTP-01"];
default = "HTTP-01";
description = lib.mdDoc ''
Type of ACME challenge to use, currently supported types:
`HTTP-01` or `TLS-ALPN-01`.
'';
};
tls_letsencrypt_listen = mkOption {
type = types.nullOr types.str;
default = ":http";
description = lib.mdDoc ''
When HTTP-01 challenge is chosen, letsencrypt must set up a
verification endpoint, and it will be listening on:
`:http = port 80`.
'';
};
tls_cert_path = mkOption {
type = types.nullOr types.path;
default = null;
description = lib.mdDoc ''
Path to already created certificate.
'';
};
tls_key_path = mkOption {
type = types.nullOr types.path;
default = null;
description = lib.mdDoc ''
Path to key for already created certificate.
'';
};
acl_policy_path = mkOption {
type = types.nullOr types.path;
default = null;
description = lib.mdDoc ''
Path to a file containing ACL policies.
'';
};
};
};
};
};
};
imports = [
# TODO address + port = listen_addr
(mkRenamedOptionModule ["services" "headscale" "serverUrl"] ["services" "headscale" "settings" "server_url"])
(mkRenamedOptionModule ["services" "headscale" "privateKeyFile"] ["services" "headscale" "settings" "private_key_path"])
(mkRenamedOptionModule ["services" "headscale" "derp" "urls"] ["services" "headscale" "settings" "derp" "urls"])
(mkRenamedOptionModule ["services" "headscale" "derp" "paths"] ["services" "headscale" "settings" "derp" "paths"])
(mkRenamedOptionModule ["services" "headscale" "derp" "autoUpdate"] ["services" "headscale" "settings" "derp" "auto_update_enable"])
(mkRenamedOptionModule ["services" "headscale" "derp" "updateFrequency"] ["services" "headscale" "settings" "derp" "update_frequency"])
(mkRenamedOptionModule ["services" "headscale" "ephemeralNodeInactivityTimeout"] ["services" "headscale" "settings" "ephemeral_node_inactivity_timeout"])
(mkRenamedOptionModule ["services" "headscale" "database" "type"] ["services" "headscale" "settings" "db_type"])
(mkRenamedOptionModule ["services" "headscale" "database" "path"] ["services" "headscale" "settings" "db_path"])
(mkRenamedOptionModule ["services" "headscale" "database" "host"] ["services" "headscale" "settings" "db_host"])
(mkRenamedOptionModule ["services" "headscale" "database" "port"] ["services" "headscale" "settings" "db_port"])
(mkRenamedOptionModule ["services" "headscale" "database" "name"] ["services" "headscale" "settings" "db_name"])
(mkRenamedOptionModule ["services" "headscale" "database" "user"] ["services" "headscale" "settings" "db_user"])
(mkRenamedOptionModule ["services" "headscale" "database" "passwordFile"] ["services" "headscale" "settings" "db_password_file"])
(mkRenamedOptionModule ["services" "headscale" "logLevel"] ["services" "headscale" "settings" "log" "level"])
(mkRenamedOptionModule ["services" "headscale" "dns" "nameservers"] ["services" "headscale" "settings" "dns_config" "nameservers"])
(mkRenamedOptionModule ["services" "headscale" "dns" "domains"] ["services" "headscale" "settings" "dns_config" "domains"])
(mkRenamedOptionModule ["services" "headscale" "dns" "magicDns"] ["services" "headscale" "settings" "dns_config" "magic_dns"])
(mkRenamedOptionModule ["services" "headscale" "dns" "baseDomain"] ["services" "headscale" "settings" "dns_config" "base_domain"])
(mkRenamedOptionModule ["services" "headscale" "openIdConnect" "issuer"] ["services" "headscale" "settings" "oidc" "issuer"])
(mkRenamedOptionModule ["services" "headscale" "openIdConnect" "clientId"] ["services" "headscale" "settings" "oidc" "client_id"])
(mkRenamedOptionModule ["services" "headscale" "openIdConnect" "clientSecretFile"] ["services" "headscale" "settings" "oidc" "client_secret_path"])
(mkRenamedOptionModule ["services" "headscale" "tls" "letsencrypt" "hostname"] ["services" "headscale" "settings" "tls_letsencrypt_hostname"])
(mkRenamedOptionModule ["services" "headscale" "tls" "letsencrypt" "challengeType"] ["services" "headscale" "settings" "tls_letsencrypt_challenge_type"])
(mkRenamedOptionModule ["services" "headscale" "tls" "letsencrypt" "httpListen"] ["services" "headscale" "settings" "tls_letsencrypt_listen"])
(mkRenamedOptionModule ["services" "headscale" "tls" "certFile"] ["services" "headscale" "settings" "tls_cert_path"])
(mkRenamedOptionModule ["services" "headscale" "tls" "keyFile"] ["services" "headscale" "settings" "tls_key_path"])
(mkRenamedOptionModule ["services" "headscale" "aclPolicyFile"] ["services" "headscale" "settings" "acl_policy_path"])
(mkRemovedOptionModule ["services" "headscale" "openIdConnect" "domainMap"] ''
Headscale no longer uses domain_map. If you're using an old version of headscale you can still set this option via services.headscale.settings.oidc.domain_map.
'')
];
config = mkIf cfg.enable {
services.headscale.settings = {
listen_addr = mkDefault "${cfg.address}:${toString cfg.port}";
# Turn off update checks since the origin of our package
# is nixpkgs and not Github.
disable_check_updates = true;
unix_socket = "${runDir}/headscale.sock";
tls_letsencrypt_cache_dir = "${dataDir}/.cache";
};
# Setup the headscale configuration in a known path in /etc to
# allow both the Server and the Client use it to find the socket
# for communication.
environment.etc."headscale/config.yaml".source = configFile;
users.groups.headscale = mkIf (cfg.group == "headscale") {};
users.users.headscale = mkIf (cfg.user == "headscale") {
description = "headscale user";
home = dataDir;
group = cfg.group;
isSystemUser = true;
};
systemd.services.headscale = {
description = "headscale coordination server for Tailscale";
after = ["network-online.target"];
wantedBy = ["multi-user.target"];
restartTriggers = [configFile];
environment.GIN_MODE = "release";
script = ''
${optionalString (cfg.settings.db_password_file != null) ''
export HEADSCALE_DB_PASS="$(head -n1 ${escapeShellArg cfg.settings.db_password_file})"
''}
exec ${cfg.package}/bin/headscale serve
'';
serviceConfig = let
capabilityBoundingSet = ["CAP_CHOWN"] ++ optional (cfg.port < 1024) "CAP_NET_BIND_SERVICE";
in {
Restart = "always";
Type = "simple";
User = cfg.user;
Group = cfg.group;
# Hardening options
RuntimeDirectory = "headscale";
# Allow headscale group access so users can be added and use the CLI.
RuntimeDirectoryMode = "0750";
StateDirectory = "headscale";
StateDirectoryMode = "0750";
ProtectSystem = "strict";
ProtectHome = true;
PrivateTmp = true;
PrivateDevices = true;
ProtectKernelTunables = true;
ProtectControlGroups = true;
RestrictSUIDSGID = true;
PrivateMounts = true;
ProtectKernelModules = true;
ProtectKernelLogs = true;
ProtectHostname = true;
ProtectClock = true;
ProtectProc = "invisible";
ProcSubset = "pid";
RestrictNamespaces = true;
RemoveIPC = true;
UMask = "0077";
CapabilityBoundingSet = capabilityBoundingSet;
AmbientCapabilities = capabilityBoundingSet;
NoNewPrivileges = true;
LockPersonality = true;
RestrictRealtime = true;
SystemCallFilter = ["@system-service" "~@privileged" "@chown"];
SystemCallArchitectures = "native";
RestrictAddressFamilies = "AF_INET AF_INET6 AF_UNIX";
};
};
};
meta.maintainers = with maintainers; [kradalby misterio77];
}