frumar: add torrent config

nixos/machines/frumar/default.nix

@@ -4,6 +4,7 @@
     ../../roles/server.nix
     ../../roles/homeserver.nix
     ./paperless.nix
+    ./torrent.nix
   ];
 
   system.stateVersion = "15.09";

nixos/machines/frumar/fractal.nix

@@ -54,7 +54,7 @@
     fsType = "zfs";
   };
 
-  fileSystems."/home/yorick/rtorrent" = {
+  fileSystems."/torrent" = {
     device = "ssdpool/torrent";
     fsType = "zfs";
   };

nixos/machines/frumar/rtorrent.rc

@@ -0,0 +1,91 @@
+#############################################################################
+# A minimal rTorrent configuration that provides the basic features
+# you want to have in addition to the built-in defaults.
+#
+# See https://github.com/rakshasa/rtorrent/wiki/CONFIG-Template
+# for an up-to-date version.
+#############################################################################
+
+# Instance layout (base paths)
+method.insert = cfg.basedir,  private|const|string, "/torrent/"
+method.insert = cfg.download, private|const|string, (cat,(cfg.basedir),"work/")
+method.insert = cfg.logs,     private|const|string, (cat,(cfg.basedir),"log/")
+method.insert = cfg.logfile,  private|const|string, (cat,(cfg.logs),"rtorrent-",(system.time),".log")
+method.insert = cfg.session,  private|const|string, (cat,(cfg.basedir),"session/")
+# method.insert = cfg.watch,    private|const|string, (cat,(cfg.basedir),"watch/")
+
+# Create instance directories
+execute.throw = sh, -c, (cat,\
+    "mkdir -p \"",(cfg.download),"\" ",\
+    "\"",(cfg.logs),"\" ",\
+    "\"",(cfg.session),"\" ") 
+
+# Listening port for incoming peer traffic (fixed; you can also randomize it)
+network.port_range.set = 58572-58572
+network.port_random.set = no
+
+# Tracker-less torrent and UDP tracker support
+# (conservative settings for 'private' trackers, change for 'public')
+dht.mode.set = auto
+protocol.pex.set = yes
+trackers.use_udp.set = yes
+
+# Peer settings
+throttle.max_uploads.set = 100
+throttle.max_uploads.global.set = 250
+
+throttle.min_peers.normal.set = 20
+throttle.max_peers.normal.set = 60
+throttle.min_peers.seed.set = 30
+throttle.max_peers.seed.set = 80
+trackers.numwant.set = 80
+
+protocol.encryption.set = allow_incoming,try_outgoing,enable_retry
+
+# Limits for file handle resources, this is optimized for
+# an `ulimit` of 1024 (a common default). You MUST leave
+# a ceiling of handles reserved for rTorrent's internal needs!
+network.http.max_open.set = 50
+network.max_open_files.set = 600
+network.max_open_sockets.set = 300
+
+# Memory resource usage (increase if you have a large number of items loaded,
+# and/or the available resources to spend)
+pieces.memory.max.set = 3600M
+network.xmlrpc.size_limit.set = 4M
+
+# Basic operational settings (no need to change these)
+session.path.set = (cat, (cfg.session))
+directory.default.set = (cat, (cfg.download))
+log.execute = (cat, (cfg.logs), "execute.log")
+##log.xmlrpc = (cat, (cfg.logs), "xmlrpc.log")
+execute.nothrow = sh, -c, (cat, "echo >",\
+    (session.path), "rtorrent.pid", " ", (system.pid))
+
+# Other operational settings (check & adapt)
+encoding.add = utf8
+system.umask.set = 0007
+system.cwd.set = (directory.default)
+network.http.dns_cache_timeout.set = 25
+schedule2 = monitor_diskspace, 15, 60, ((close_low_diskspace, 1000M))
+
+dht.port.set = 10523
+system.file.allocate.set = yes
+
+# Run the rTorrent process as a daemon in the background
+# (and control via XMLRPC sockets)
+#system.daemon.set = true
+network.scgi.open_local = (cat,(session.path),".rtorrent.sock")
+execute.nothrow = chmod,770,(cat,(session.path),".rtorrent.sock")
+
+# Logging:
+#   Levels = critical error warn notice info debug
+#   Groups = connection_* dht_* peer_* rpc_* storage_* thread_* tracker_* torrent_*
+print = (cat, "Logging to ", (cfg.logfile))
+log.open_file = "log", (cfg.logfile)
+log.add_output = "info", "log"
+
+method.insert = get_public_ip_address, simple|private, "execute.capture=curl,-f,ifconfig.me/ip"
+# The IP address reported to the tracker. (ip) This handles dynamic IP's as well.
+schedule2 = ip_tick, 0, 1800, "network.local_address.set=(get_public_ip_address)"
+

nixos/machines/frumar/torrent.nix

@@ -0,0 +1,13 @@
+{ config, pkgs, lib, ... }: {
+  users.users.torrent = {
+    isSystemUser = true;
+    createHome = false;
+    group = "torrent";
+    home = "/torrent";
+  };
+  users.groups.torrent = {};
+  systemd.tmpfiles.rules = [
+    "d /torrent 770 torrent torrent"
+  ];
+  users.users.yorick.extraGroups = [ "torrent" ];
+}