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nixos: init moosefs module
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@ -684,6 +684,7 @@
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./services/network-filesystems/litestream/default.nix
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./services/network-filesystems/netatalk.nix
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./services/network-filesystems/nfsd.nix
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./services/network-filesystems/moosefs.nix
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./services/network-filesystems/openafs/client.nix
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./services/network-filesystems/openafs/server.nix
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./services/network-filesystems/orangefs/server.nix
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252
nixos/modules/services/network-filesystems/moosefs.nix
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252
nixos/modules/services/network-filesystems/moosefs.nix
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@ -0,0 +1,252 @@
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.moosefs;
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mfsUser = if cfg.runAsUser then "moosefs" else "root";
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settingsFormat = let
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listSep = " ";
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allowedTypes = with types; [ bool int float str ];
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valueToString = val:
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if isList val then concatStringsSep listSep (map (x: valueToString x) val)
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else if isBool val then (if val then "1" else "0")
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else toString val;
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in {
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type = with types; let
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valueType = oneOf ([
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(listOf valueType)
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] ++ allowedTypes) // {
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description = "Flat key-value file";
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};
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in attrsOf valueType;
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generate = name: value:
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pkgs.writeText name ( lib.concatStringsSep "\n" (
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lib.mapAttrsToList (key: val: "${key} = ${valueToString val}") value ));
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};
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initTool = pkgs.writeShellScriptBin "mfsmaster-init" ''
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if [ ! -e ${cfg.master.settings.DATA_PATH}/metadata.mfs ]; then
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cp ${pkgs.moosefs}/var/mfs/metadata.mfs.empty ${cfg.master.settings.DATA_PATH}
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chmod +w ${cfg.master.settings.DATA_PATH}/metadata.mfs.empty
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${pkgs.moosefs}/bin/mfsmaster -a -c ${masterCfg} start
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${pkgs.moosefs}/bin/mfsmaster -c ${masterCfg} stop
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rm ${cfg.master.settings.DATA_PATH}/metadata.mfs.empty
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fi
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'';
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# master config file
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masterCfg = settingsFormat.generate
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"mfsmaster.cfg" cfg.master.settings;
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# metalogger config file
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metaloggerCfg = settingsFormat.generate
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"mfsmetalogger.cfg" cfg.metalogger.settings;
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# chunkserver config file
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chunkserverCfg = settingsFormat.generate
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"mfschunkserver.cfg" cfg.chunkserver.settings;
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# generic template for all deamons
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systemdService = name: extraConfig: configFile: {
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wantedBy = [ "multi-user.target" ];
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wants = [ "network-online.target" ];
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after = [ "network.target" "network-online.target" ];
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serviceConfig = {
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Type = "forking";
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ExecStart = "${pkgs.moosefs}/bin/mfs${name} -c ${configFile} start";
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ExecStop = "${pkgs.moosefs}/bin/mfs${name} -c ${configFile} stop";
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ExecReload = "${pkgs.moosefs}/bin/mfs${name} -c ${configFile} reload";
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PIDFile = "${cfg."${name}".settings.DATA_PATH}/.mfs${name}.lock";
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} // extraConfig;
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};
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in {
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###### interface
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options = {
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services.moosefs = {
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masterHost = mkOption {
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type = types.str;
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default = null;
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description = "IP or DNS name of master host.";
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};
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runAsUser = mkOption {
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type = types.bool;
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default = true;
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example = true;
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description = "Run daemons as user moosefs instead of root.";
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};
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client.enable = mkEnableOption "Moosefs client.";
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master = {
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enable = mkOption {
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type = types.bool;
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description = ''
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Enable Moosefs master daemon.
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You need to run <literal>mfsmaster-init</literal> on a freshly installed master server to
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initialize the <literal>DATA_PATH</literal> direcory.
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'';
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default = false;
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};
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exports = mkOption {
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type = with types; listOf str;
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default = null;
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description = "Paths to export (see mfsexports.cfg).";
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example = [
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"* / rw,alldirs,admin,maproot=0:0"
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"* . rw"
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];
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};
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openFirewall = mkOption {
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type = types.bool;
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description = "Whether to automatically open the necessary ports in the firewall.";
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default = false;
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};
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settings = mkOption {
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type = types.submodule {
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freeformType = settingsFormat.type;
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options.DATA_PATH = mkOption {
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type = types.str;
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default = "/var/lib/mfs";
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description = "Data storage directory.";
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};
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};
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description = "Contents of config file (mfsmaster.cfg).";
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};
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};
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metalogger = {
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enable = mkEnableOption "Moosefs metalogger daemon.";
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settings = mkOption {
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type = types.submodule {
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freeformType = settingsFormat.type;
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options.DATA_PATH = mkOption {
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type = types.str;
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default = "/var/lib/mfs";
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description = "Data storage directory";
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};
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};
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description = "Contents of metalogger config file (mfsmetalogger.cfg).";
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};
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};
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chunkserver = {
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enable = mkEnableOption "Moosefs chunkserver daemon.";
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openFirewall = mkOption {
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type = types.bool;
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description = "Whether to automatically open the necessary ports in the firewall.";
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default = false;
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};
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hdds = mkOption {
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type = with types; listOf str;
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default = null;
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description = "Mount points to be used by chunkserver for storage (see mfshdd.cfg).";
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example = [ "/mnt/hdd1" ];
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};
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settings = mkOption {
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type = types.submodule {
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freeformType = settingsFormat.type;
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options.DATA_PATH = mkOption {
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type = types.str;
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default = "/var/lib/mfs";
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description = "Directory for lock file.";
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};
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};
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description = "Contents of chunkserver config file (mfschunkserver.cfg).";
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};
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};
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};
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};
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###### implementation
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config = mkIf ( cfg.client.enable || cfg.master.enable || cfg.metalogger.enable || cfg.chunkserver.enable ) {
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warnings = [ ( mkIf (!cfg.runAsUser) "Running moosefs services as root is not recommended.") ];
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# Service settings
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services.moosefs = {
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master.settings = mkIf cfg.master.enable {
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WORKING_USER = mfsUser;
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EXPORTS_FILENAME = toString ( pkgs.writeText "mfsexports.cfg"
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(concatStringsSep "\n" cfg.master.exports));
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};
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metalogger.settings = mkIf cfg.metalogger.enable {
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WORKING_USER = mfsUser;
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MASTER_HOST = cfg.masterHost;
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};
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chunkserver.settings = mkIf cfg.chunkserver.enable {
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WORKING_USER = mfsUser;
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MASTER_HOST = cfg.masterHost;
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HDD_CONF_FILENAME = toString ( pkgs.writeText "mfshdd.cfg"
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(concatStringsSep "\n" cfg.chunkserver.hdds));
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};
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};
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# Create system user account for daemons
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users = mkIf ( cfg.runAsUser && ( cfg.master.enable || cfg.metalogger.enable || cfg.chunkserver.enable ) ) {
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users.moosefs = {
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isSystemUser = true;
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description = "moosefs daemon user";
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group = "moosefs";
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};
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groups.moosefs = {};
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};
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environment.systemPackages =
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(lib.optional cfg.client.enable pkgs.moosefs) ++
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(lib.optional cfg.master.enable initTool);
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networking.firewall.allowedTCPPorts =
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(lib.optionals cfg.master.openFirewall [ 9419 9420 9421 ]) ++
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(lib.optional cfg.chunkserver.openFirewall 9422);
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# Ensure storage directories exist
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systemd.tmpfiles.rules =
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optional cfg.master.enable "d ${cfg.master.settings.DATA_PATH} 0700 ${mfsUser} ${mfsUser}"
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++ optional cfg.metalogger.enable "d ${cfg.metalogger.settings.DATA_PATH} 0700 ${mfsUser} ${mfsUser}"
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++ optional cfg.chunkserver.enable "d ${cfg.chunkserver.settings.DATA_PATH} 0700 ${mfsUser} ${mfsUser}";
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# Service definitions
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systemd.services.mfs-master = mkIf cfg.master.enable
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( systemdService "master" {
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TimeoutStartSec = 1800;
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TimeoutStopSec = 1800;
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Restart = "no";
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} masterCfg );
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systemd.services.mfs-metalogger = mkIf cfg.metalogger.enable
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( systemdService "metalogger" { Restart = "on-abnormal"; } metaloggerCfg );
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systemd.services.mfs-chunkserver = mkIf cfg.chunkserver.enable
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( systemdService "chunkserver" { Restart = "on-abnormal"; } chunkserverCfg );
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};
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}
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