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|
{
config,
lib,
pkgs,
...
}:
with lib;
let
cfg = config.services.traefik;
format = pkgs.formats.toml { };
dynamicConfigFile =
if cfg.dynamicConfigFile == null then
format.generate "config.toml" cfg.dynamicConfigOptions
else
cfg.dynamicConfigFile;
staticConfigFile =
if cfg.staticConfigFile == null then
format.generate "config.toml" (
recursiveUpdate cfg.staticConfigOptions {
providers.file.filename = "${dynamicConfigFile}";
}
)
else
cfg.staticConfigFile;
finalStaticConfigFile =
if cfg.environmentFiles == [ ] then staticConfigFile else "/run/traefik/config.toml";
in
{
options.services.traefik = {
enable = mkEnableOption "Traefik web server";
staticConfigFile = mkOption {
default = null;
example = literalExpression "/path/to/static_config.toml";
type = types.nullOr types.path;
description = ''
Path to traefik's static configuration to use.
(Using that option has precedence over `staticConfigOptions` and `dynamicConfigOptions`)
'';
};
staticConfigOptions = mkOption {
description = ''
Static configuration for Traefik.
'';
type = format.type;
default = {
entryPoints.http.address = ":80";
};
example = {
entryPoints.web.address = ":8080";
entryPoints.http.address = ":80";
api = { };
};
};
dynamicConfigFile = mkOption {
default = null;
example = literalExpression "/path/to/dynamic_config.toml";
type = types.nullOr types.path;
description = ''
Path to traefik's dynamic configuration to use.
(Using that option has precedence over `dynamicConfigOptions`)
'';
};
dynamicConfigOptions = mkOption {
description = ''
Dynamic configuration for Traefik.
'';
type = format.type;
default = { };
example = {
http.routers.router1 = {
rule = "Host(`localhost`)";
service = "service1";
};
http.services.service1.loadBalancer.servers = [ { url = "http://localhost:8080"; } ];
};
};
dataDir = mkOption {
default = "/var/lib/traefik";
type = types.path;
description = ''
Location for any persistent data traefik creates, ie. acme
'';
};
group = mkOption {
default = "traefik";
type = types.str;
example = "docker";
description = ''
Set the group that traefik runs under.
For the docker backend this needs to be set to `docker` instead.
'';
};
package = mkPackageOption pkgs "traefik" { };
environmentFiles = mkOption {
default = [ ];
type = types.listOf types.path;
example = [ "/run/secrets/traefik.env" ];
description = ''
Files to load as environment file. Environment variables from this file
will be substituted into the static configuration file using envsubst.
'';
};
};
config = mkIf cfg.enable {
systemd.tmpfiles.rules = [ "d '${cfg.dataDir}' 0700 traefik traefik - -" ];
systemd.services.traefik = {
description = "Traefik web server";
wants = [ "network-online.target" ];
after = [ "network-online.target" ];
wantedBy = [ "multi-user.target" ];
startLimitIntervalSec = 86400;
startLimitBurst = 5;
serviceConfig = {
EnvironmentFile = cfg.environmentFiles;
ExecStartPre = lib.optional (
cfg.environmentFiles != [ ]
) "${pkgs.envsubst}/bin/envsubst -i '${staticConfigFile}' -o '${finalStaticConfigFile}'";
ExecStart = "${cfg.package}/bin/traefik --configfile=${finalStaticConfigFile}";
Type = "simple";
User = "traefik";
Group = cfg.group;
Restart = "on-failure";
AmbientCapabilities = "cap_net_bind_service";
CapabilityBoundingSet = "cap_net_bind_service";
NoNewPrivileges = true;
LimitNPROC = 64;
LimitNOFILE = 1048576;
PrivateTmp = true;
PrivateDevices = true;
ProtectHome = true;
ProtectSystem = "full";
ReadWritePaths = [ cfg.dataDir ];
RuntimeDirectory = "traefik";
RuntimeDirectoryMode = "0700";
WorkingDirectory = cfg.dataDir;
};
};
users.users.traefik = {
group = "traefik";
home = cfg.dataDir;
createHome = true;
isSystemUser = true;
};
users.groups.traefik = { };
};
}
|
