nixpkgs/nixos/modules/services/networking/kea.nix
pennae 2e751c0772 treewide: automatically md-convert option descriptions
the conversion procedure is simple:

 - find all things that look like options, ie calls to either `mkOption`
   or `lib.mkOption` that take an attrset. remember the attrset as the
   option
 - for all options, find a `description` attribute who's value is not a
   call to `mdDoc` or `lib.mdDoc`
 - textually convert the entire value of the attribute to MD with a few
   simple regexes (the set from mdize-module.sh)
 - if the change produced a change in the manual output, discard
 - if the change kept the manual unchanged, add some text to the
   description to make sure we've actually found an option. if the
   manual changes this time, keep the converted description

this procedure converts 80% of nixos options to markdown. around 2000
options remain to be inspected, but most of those fail the "does not
change the manual output check": currently the MD conversion process
does not faithfully convert docbook tags like <code> and <package>, so
any option using such tags will not be converted at all.
2022-07-30 15:16:34 +02:00

450 lines
13 KiB
Nix

{ config
, lib
, pkgs
, ...
}:
with lib;
let
cfg = config.services.kea;
xor = x: y: (!x && y) || (x && !y);
format = pkgs.formats.json {};
chooseNotNull = x: y: if x != null then x else y;
ctrlAgentConfig = chooseNotNull cfg.ctrl-agent.configFile (format.generate "kea-ctrl-agent.conf" {
Control-agent = cfg.ctrl-agent.settings;
});
dhcp4Config = chooseNotNull cfg.dhcp4.configFile (format.generate "kea-dhcp4.conf" {
Dhcp4 = cfg.dhcp4.settings;
});
dhcp6Config = chooseNotNull cfg.dhcp6.configFile (format.generate "kea-dhcp6.conf" {
Dhcp6 = cfg.dhcp6.settings;
});
dhcpDdnsConfig = chooseNotNull cfg.dhcp-ddns.configFile (format.generate "kea-dhcp-ddns.conf" {
DhcpDdns = cfg.dhcp-ddns.settings;
});
package = pkgs.kea;
in
{
options.services.kea = with types; {
ctrl-agent = mkOption {
description = lib.mdDoc ''
Kea Control Agent configuration
'';
default = {};
type = submodule {
options = {
enable = mkEnableOption "Kea Control Agent";
extraArgs = mkOption {
type = listOf str;
default = [];
description = lib.mdDoc ''
List of additonal arguments to pass to the daemon.
'';
};
configFile = mkOption {
type = nullOr path;
default = null;
description = ''
Kea Control Agent configuration as a path, see <link xlink:href="https://kea.readthedocs.io/en/kea-${package.version}/arm/agent.html"/>.
Takes preference over <link linkend="opt-services.kea.ctrl-agent.settings">settings</link>.
Most users should prefer using <link linkend="opt-services.kea.ctrl-agent.settings">settings</link> instead.
'';
};
settings = mkOption {
type = format.type;
default = null;
description = lib.mdDoc ''
Kea Control Agent configuration as an attribute set, see <https://kea.readthedocs.io/en/kea-${package.version}/arm/agent.html>.
'';
};
};
};
};
dhcp4 = mkOption {
description = lib.mdDoc ''
DHCP4 Server configuration
'';
default = {};
type = submodule {
options = {
enable = mkEnableOption "Kea DHCP4 server";
extraArgs = mkOption {
type = listOf str;
default = [];
description = lib.mdDoc ''
List of additonal arguments to pass to the daemon.
'';
};
configFile = mkOption {
type = nullOr path;
default = null;
description = ''
Kea DHCP4 configuration as a path, see <link xlink:href="https://kea.readthedocs.io/en/kea-${package.version}/arm/dhcp4-srv.html"/>.
Takes preference over <link linkend="opt-services.kea.dhcp4.settings">settings</link>.
Most users should prefer using <link linkend="opt-services.kea.dhcp4.settings">settings</link> instead.
'';
};
settings = mkOption {
type = format.type;
default = null;
example = {
valid-lifetime = 4000;
renew-timer = 1000;
rebind-timer = 2000;
interfaces-config = {
interfaces = [
"eth0"
];
};
lease-database = {
type = "memfile";
persist = true;
name = "/var/lib/kea/dhcp4.leases";
};
subnet4 = [ {
subnet = "192.0.2.0/24";
pools = [ {
pool = "192.0.2.100 - 192.0.2.240";
} ];
} ];
};
description = lib.mdDoc ''
Kea DHCP4 configuration as an attribute set, see <https://kea.readthedocs.io/en/kea-${package.version}/arm/dhcp4-srv.html>.
'';
};
};
};
};
dhcp6 = mkOption {
description = lib.mdDoc ''
DHCP6 Server configuration
'';
default = {};
type = submodule {
options = {
enable = mkEnableOption "Kea DHCP6 server";
extraArgs = mkOption {
type = listOf str;
default = [];
description = lib.mdDoc ''
List of additonal arguments to pass to the daemon.
'';
};
configFile = mkOption {
type = nullOr path;
default = null;
description = ''
Kea DHCP6 configuration as a path, see <link xlink:href="https://kea.readthedocs.io/en/kea-${package.version}/arm/dhcp6-srv.html"/>.
Takes preference over <link linkend="opt-services.kea.dhcp6.settings">settings</link>.
Most users should prefer using <link linkend="opt-services.kea.dhcp6.settings">settings</link> instead.
'';
};
settings = mkOption {
type = format.type;
default = null;
example = {
valid-lifetime = 4000;
renew-timer = 1000;
rebind-timer = 2000;
preferred-lifetime = 3000;
interfaces-config = {
interfaces = [
"eth0"
];
};
lease-database = {
type = "memfile";
persist = true;
name = "/var/lib/kea/dhcp6.leases";
};
subnet6 = [ {
subnet = "2001:db8:1::/64";
pools = [ {
pool = "2001:db8:1::1-2001:db8:1::ffff";
} ];
} ];
};
description = lib.mdDoc ''
Kea DHCP6 configuration as an attribute set, see <https://kea.readthedocs.io/en/kea-${package.version}/arm/dhcp6-srv.html>.
'';
};
};
};
};
dhcp-ddns = mkOption {
description = lib.mdDoc ''
Kea DHCP-DDNS configuration
'';
default = {};
type = submodule {
options = {
enable = mkEnableOption "Kea DDNS server";
extraArgs = mkOption {
type = listOf str;
default = [];
description = lib.mdDoc ''
List of additonal arguments to pass to the daemon.
'';
};
configFile = mkOption {
type = nullOr path;
default = null;
description = ''
Kea DHCP-DDNS configuration as a path, see <link xlink:href="https://kea.readthedocs.io/en/kea-${package.version}/arm/ddns.html"/>.
Takes preference over <link linkend="opt-services.kea.dhcp-ddns.settings">settings</link>.
Most users should prefer using <link linkend="opt-services.kea.dhcp-ddns.settings">settings</link> instead.
'';
};
settings = mkOption {
type = format.type;
default = null;
example = {
ip-address = "127.0.0.1";
port = 53001;
dns-server-timeout = 100;
ncr-protocol = "UDP";
ncr-format = "JSON";
tsig-keys = [ ];
forward-ddns = {
ddns-domains = [ ];
};
reverse-ddns = {
ddns-domains = [ ];
};
};
description = lib.mdDoc ''
Kea DHCP-DDNS configuration as an attribute set, see <https://kea.readthedocs.io/en/kea-${package.version}/arm/ddns.html>.
'';
};
};
};
};
};
config = let
commonServiceConfig = {
ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
DynamicUser = true;
User = "kea";
ConfigurationDirectory = "kea";
RuntimeDirectory = "kea";
StateDirectory = "kea";
UMask = "0077";
};
in mkIf (cfg.ctrl-agent.enable || cfg.dhcp4.enable || cfg.dhcp6.enable || cfg.dhcp-ddns.enable) (mkMerge [
{
environment.systemPackages = [ package ];
}
(mkIf cfg.ctrl-agent.enable {
assertions = [{
assertion = xor (cfg.ctrl-agent.settings == null) (cfg.ctrl-agent.configFile == null);
message = "Either services.kea.ctrl-agent.settings or services.kea.ctrl-agent.configFile must be set to a non-null value.";
}];
environment.etc."kea/ctrl-agent.conf".source = ctrlAgentConfig;
systemd.services.kea-ctrl-agent = {
description = "Kea Control Agent";
documentation = [
"man:kea-ctrl-agent(8)"
"https://kea.readthedocs.io/en/kea-${package.version}/arm/agent.html"
];
after = [
"network-online.target"
"time-sync.target"
];
wantedBy = [
"kea-dhcp4-server.service"
"kea-dhcp6-server.service"
"kea-dhcp-ddns-server.service"
];
environment = {
KEA_PIDFILE_DIR = "/run/kea";
KEA_LOCKFILE_DIR = "/run/kea";
};
restartTriggers = [
ctrlAgentConfig
];
serviceConfig = {
ExecStart = "${package}/bin/kea-ctrl-agent -c /etc/kea/ctrl-agent.conf ${lib.escapeShellArgs cfg.dhcp4.extraArgs}";
KillMode = "process";
Restart = "on-failure";
} // commonServiceConfig;
};
})
(mkIf cfg.dhcp4.enable {
assertions = [{
assertion = xor (cfg.dhcp4.settings == null) (cfg.dhcp4.configFile == null);
message = "Either services.kea.dhcp4.settings or services.kea.dhcp4.configFile must be set to a non-null value.";
}];
environment.etc."kea/dhcp4-server.conf".source = dhcp4Config;
systemd.services.kea-dhcp4-server = {
description = "Kea DHCP4 Server";
documentation = [
"man:kea-dhcp4(8)"
"https://kea.readthedocs.io/en/kea-${package.version}/arm/dhcp4-srv.html"
];
after = [
"network-online.target"
"time-sync.target"
];
wantedBy = [
"multi-user.target"
];
environment = {
KEA_PIDFILE_DIR = "/run/kea";
KEA_LOCKFILE_DIR = "/run/kea";
};
restartTriggers = [
dhcp4Config
];
serviceConfig = {
ExecStart = "${package}/bin/kea-dhcp4 -c /etc/kea/dhcp4-server.conf ${lib.escapeShellArgs cfg.dhcp4.extraArgs}";
# Kea does not request capabilities by itself
AmbientCapabilities = [
"CAP_NET_BIND_SERVICE"
"CAP_NET_RAW"
];
CapabilityBoundingSet = [
"CAP_NET_BIND_SERVICE"
"CAP_NET_RAW"
];
} // commonServiceConfig;
};
})
(mkIf cfg.dhcp6.enable {
assertions = [{
assertion = xor (cfg.dhcp6.settings == null) (cfg.dhcp6.configFile == null);
message = "Either services.kea.dhcp6.settings or services.kea.dhcp6.configFile must be set to a non-null value.";
}];
environment.etc."kea/dhcp6-server.conf".source = dhcp6Config;
systemd.services.kea-dhcp6-server = {
description = "Kea DHCP6 Server";
documentation = [
"man:kea-dhcp6(8)"
"https://kea.readthedocs.io/en/kea-${package.version}/arm/dhcp6-srv.html"
];
after = [
"network-online.target"
"time-sync.target"
];
wantedBy = [
"multi-user.target"
];
environment = {
KEA_PIDFILE_DIR = "/run/kea";
KEA_LOCKFILE_DIR = "/run/kea";
};
restartTriggers = [
dhcp6Config
];
serviceConfig = {
ExecStart = "${package}/bin/kea-dhcp6 -c /etc/kea/dhcp6-server.conf ${lib.escapeShellArgs cfg.dhcp6.extraArgs}";
# Kea does not request capabilities by itself
AmbientCapabilities = [
"CAP_NET_BIND_SERVICE"
];
CapabilityBoundingSet = [
"CAP_NET_BIND_SERVICE"
];
} // commonServiceConfig;
};
})
(mkIf cfg.dhcp-ddns.enable {
assertions = [{
assertion = xor (cfg.dhcp-ddns.settings == null) (cfg.dhcp-ddns.configFile == null);
message = "Either services.kea.dhcp-ddns.settings or services.kea.dhcp-ddns.configFile must be set to a non-null value.";
}];
environment.etc."kea/dhcp-ddns.conf".source = dhcpDdnsConfig;
systemd.services.kea-dhcp-ddns-server = {
description = "Kea DHCP-DDNS Server";
documentation = [
"man:kea-dhcp-ddns(8)"
"https://kea.readthedocs.io/en/kea-${package.version}/arm/ddns.html"
];
after = [
"network-online.target"
"time-sync.target"
];
wantedBy = [
"multi-user.target"
];
environment = {
KEA_PIDFILE_DIR = "/run/kea";
KEA_LOCKFILE_DIR = "/run/kea";
};
restartTriggers = [
dhcpDdnsConfig
];
serviceConfig = {
ExecStart = "${package}/bin/kea-dhcp-ddns -c /etc/kea/dhcp-ddns.conf ${lib.escapeShellArgs cfg.dhcp-ddns.extraArgs}";
AmbientCapabilities = [
"CAP_NET_BIND_SERVICE"
];
CapabilityBoundingSet = [
"CAP_NET_BIND_SERVICE"
];
} // commonServiceConfig;
};
})
]);
meta.maintainers = with maintainers; [ hexa ];
# uses attributes of the linked package
meta.buildDocsInSandbox = false;
}