{ config, lib, pkgs, ... }: with lib; let cfg = config.services.mongodb; mongodb = cfg.package; mongoCnf = cfg: pkgs.writeText "mongodb.conf" '' net.bindIp: ${cfg.bind_ip} ${optionalString cfg.quiet "systemLog.quiet: true"} systemLog.destination: syslog storage.dbPath: ${cfg.dbpath} ${optionalString cfg.enableAuth "security.authorization: enabled"} ${optionalString (cfg.replSetName != "") "replication.replSetName: ${cfg.replSetName}"} ${cfg.extraConfig} ''; in { ###### interface options = { services.mongodb = { enable = mkEnableOption (lib.mdDoc "the MongoDB server"); package = mkOption { default = pkgs.mongodb; defaultText = literalExpression "pkgs.mongodb"; type = types.package; description = lib.mdDoc '' Which MongoDB derivation to use. ''; }; user = mkOption { type = types.str; default = "mongodb"; description = lib.mdDoc "User account under which MongoDB runs"; }; bind_ip = mkOption { type = types.str; default = "127.0.0.1"; description = lib.mdDoc "IP to bind to"; }; quiet = mkOption { type = types.bool; default = false; description = lib.mdDoc "quieter output"; }; enableAuth = mkOption { type = types.bool; default = false; description = lib.mdDoc "Enable client authentication. Creates a default superuser with username root!"; }; initialRootPassword = mkOption { type = types.nullOr types.str; default = null; description = lib.mdDoc "Password for the root user if auth is enabled."; }; dbpath = mkOption { type = types.str; default = "/var/db/mongodb"; description = lib.mdDoc "Location where MongoDB stores its files"; }; pidFile = mkOption { type = types.str; default = "/run/mongodb.pid"; description = lib.mdDoc "Location of MongoDB pid file"; }; replSetName = mkOption { type = types.str; default = ""; description = lib.mdDoc '' If this instance is part of a replica set, set its name here. Otherwise, leave empty to run as single node. ''; }; extraConfig = mkOption { type = types.lines; default = ""; example = '' storage.journal.enabled: false ''; description = lib.mdDoc "MongoDB extra configuration in YAML format"; }; initialScript = mkOption { type = types.nullOr types.path; default = null; description = lib.mdDoc '' A file containing MongoDB statements to execute on first startup. ''; }; }; }; ###### implementation config = mkIf config.services.mongodb.enable { assertions = [ { assertion = !cfg.enableAuth || cfg.initialRootPassword != null; message = "`enableAuth` requires `initialRootPassword` to be set."; } ]; users.users.mongodb = mkIf (cfg.user == "mongodb") { name = "mongodb"; isSystemUser = true; group = "mongodb"; description = "MongoDB server user"; }; users.groups.mongodb = mkIf (cfg.user == "mongodb") {}; environment.systemPackages = [ mongodb ]; systemd.services.mongodb = { description = "MongoDB server"; wantedBy = [ "multi-user.target" ]; after = [ "network.target" ]; serviceConfig = { ExecStart = "${mongodb}/bin/mongod --config ${mongoCnf cfg} --fork --pidfilepath ${cfg.pidFile}"; User = cfg.user; PIDFile = cfg.pidFile; Type = "forking"; TimeoutStartSec=120; # initial creating of journal can take some time PermissionsStartOnly = true; }; preStart = let cfg_ = cfg // { enableAuth = false; bind_ip = "127.0.0.1"; }; in '' rm ${cfg.dbpath}/mongod.lock || true if ! test -e ${cfg.dbpath}; then install -d -m0700 -o ${cfg.user} ${cfg.dbpath} # See postStart! touch ${cfg.dbpath}/.first_startup fi if ! test -e ${cfg.pidFile}; then install -D -o ${cfg.user} /dev/null ${cfg.pidFile} fi '' + lib.optionalString cfg.enableAuth '' if ! test -e "${cfg.dbpath}/.auth_setup_complete"; then systemd-run --unit=mongodb-for-setup --uid=${cfg.user} ${mongodb}/bin/mongod --config ${mongoCnf cfg_} # wait for mongodb while ! ${mongodb}/bin/mongo --eval "db.version()" > /dev/null 2>&1; do sleep 0.1; done ${mongodb}/bin/mongo <