diff options
Diffstat (limited to 'nixos/modules/services/web-servers/traefik.nix')
-rw-r--r-- | nixos/modules/services/web-servers/traefik.nix | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/nixos/modules/services/web-servers/traefik.nix b/nixos/modules/services/web-servers/traefik.nix new file mode 100644 index 00000000000..eb7fd0995de --- /dev/null +++ b/nixos/modules/services/web-servers/traefik.nix @@ -0,0 +1,170 @@ +{ config, lib, pkgs, ... }: + +with lib; + +let + cfg = config.services.traefik; + jsonValue = with types; + let + valueType = nullOr (oneOf [ + bool + int + float + str + (lazyAttrsOf valueType) + (listOf valueType) + ]) // { + description = "JSON value"; + emptyValue.value = { }; + }; + in valueType; + dynamicConfigFile = if cfg.dynamicConfigFile == null then + pkgs.runCommand "config.toml" { + buildInputs = [ pkgs.remarshal ]; + preferLocalBuild = true; + } '' + remarshal -if json -of toml \ + < ${ + pkgs.writeText "dynamic_config.json" + (builtins.toJSON cfg.dynamicConfigOptions) + } \ + > $out + '' + else + cfg.dynamicConfigFile; + staticConfigFile = if cfg.staticConfigFile == null then + pkgs.runCommand "config.toml" { + buildInputs = [ pkgs.yj ]; + preferLocalBuild = true; + } '' + yj -jt -i \ + < ${ + pkgs.writeText "static_config.json" (builtins.toJSON + (recursiveUpdate cfg.staticConfigOptions { + providers.file.filename = "${dynamicConfigFile}"; + })) + } \ + > $out + '' + else + cfg.staticConfigFile; +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 <literal>staticConfigOptions</literal> and <literal>dynamicConfigOptions</literal>) + ''; + }; + + staticConfigOptions = mkOption { + description = '' + Static configuration for Traefik. + ''; + type = jsonValue; + 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 <literal>dynamicConfigOptions</literal>) + ''; + }; + + dynamicConfigOptions = mkOption { + description = '' + Dynamic configuration for Traefik. + ''; + type = jsonValue; + 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 <literal>docker</literal> instead. + ''; + }; + + package = mkOption { + default = pkgs.traefik; + defaultText = literalExpression "pkgs.traefik"; + type = types.package; + description = "Traefik package to use."; + }; + }; + + config = mkIf cfg.enable { + systemd.tmpfiles.rules = [ "d '${cfg.dataDir}' 0700 traefik traefik - -" ]; + + systemd.services.traefik = { + description = "Traefik web server"; + after = [ "network-online.target" ]; + wantedBy = [ "multi-user.target" ]; + startLimitIntervalSec = 86400; + startLimitBurst = 5; + serviceConfig = { + ExecStart = + "${cfg.package}/bin/traefik --configfile=${staticConfigFile}"; + 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"; + ReadWriteDirectories = cfg.dataDir; + }; + }; + + users.users.traefik = { + group = "traefik"; + home = cfg.dataDir; + createHome = true; + isSystemUser = true; + }; + + users.groups.traefik = { }; + }; +} |