133 lines
		
	
	
		
			3.0 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			133 lines
		
	
	
		
			3.0 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, lib, pkgs, ... }:
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with lib;
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let
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  cfg = config.services.mongodb;
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  mongodb = cfg.package;
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  mongoCnf = pkgs.writeText "mongodb.conf"
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  ''
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    net.bindIp: ${cfg.bind_ip}
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    ${optionalString cfg.quiet "systemLog.quiet: true"}
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    systemLog.destination: syslog
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    storage.dbPath: ${cfg.dbpath}
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    ${optionalString (cfg.replSetName != "") "replication.replSetName: ${cfg.replSetName}"}
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    ${cfg.extraConfig}
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  '';
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in
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{
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  ###### interface
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  options = {
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    services.mongodb = {
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      enable = mkOption {
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        default = false;
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        description = "
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          Whether to enable the MongoDB server.
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        ";
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      };
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      package = mkOption {
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        default = pkgs.mongodb;
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        defaultText = "pkgs.mongodb";
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        type = types.package;
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        description = "
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          Which MongoDB derivation to use.
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        ";
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      };
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      user = mkOption {
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        default = "mongodb";
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        description = "User account under which MongoDB runs";
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      };
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      bind_ip = mkOption {
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        default = "127.0.0.1";
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        description = "IP to bind to";
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      };
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      quiet = mkOption {
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        default = false;
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        description = "quieter output";
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      };
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      dbpath = mkOption {
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        default = "/var/db/mongodb";
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        description = "Location where MongoDB stores its files";
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      };
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      pidFile = mkOption {
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        default = "/var/run/mongodb.pid";
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        description = "Location of MongoDB pid file";
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      };
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      replSetName = mkOption {
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        default = "";
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        description = ''
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          If this instance is part of a replica set, set its name here.
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          Otherwise, leave empty to run as single node.
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        '';
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      };
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      extraConfig = mkOption {
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        default = "";
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        example = ''
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          storage.journal.enabled: false
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        '';
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        description = "MongoDB extra configuration in YAML format";
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      };
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    };
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  };
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  ###### implementation
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  config = mkIf config.services.mongodb.enable {
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    users.extraUsers.mongodb = mkIf (cfg.user == "mongodb")
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      { name = "mongodb";
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        uid = config.ids.uids.mongodb;
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        description = "MongoDB server user";
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      };
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    environment.systemPackages = [ mongodb ];
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    systemd.services.mongodb =
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      { description = "MongoDB server";
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        wantedBy = [ "multi-user.target" ];
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        after = [ "network.target" ];
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        serviceConfig = {
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          ExecStart = "${mongodb}/bin/mongod --config ${mongoCnf} --fork --pidfilepath ${cfg.pidFile}";
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          User = cfg.user;
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          PIDFile = cfg.pidFile;
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          Type = "forking";
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          TimeoutStartSec=120; # intial creating of journal can take some time
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          PermissionsStartOnly = true;
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        };
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        preStart = ''
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          rm ${cfg.dbpath}/mongod.lock || true
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          if ! test -e ${cfg.dbpath}; then
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              install -d -m0700 -o ${cfg.user} ${cfg.dbpath}
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          fi
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          if ! test -e ${cfg.pidFile}; then
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              install -D -o ${cfg.user} /dev/null ${cfg.pidFile}
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          fi
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        '';
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      };
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  };
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}
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