modules/private/system/eldiron.nix

   1 { privateFiles }:
   2 { config, pkgs, ... }:
   3 {
   4   boot.supportedFilesystems = [ "zfs" ];
   5   boot.kernelPackages = pkgs.linuxPackages_latest;
   6   myEnv = import "${privateFiles}/environment.nix" // { inherit privateFiles; };
   7
   8   networking = {
   9     hostId = "8262ca33"; # generated with head -c4 /dev/urandom | od -A none -t x4
  10     firewall.enable = true;
  11     # 176.9.151.89 declared in nixops -> infra / tools
  12     interfaces."eth0".ipv4.addresses = pkgs.lib.attrsets.mapAttrsToList
  13       (n: ips: { address = ips.ip4; prefixLength = 32; })
  14       (pkgs.lib.attrsets.filterAttrs (n: v: n != "main") config.hostEnv.ips);
  15     interfaces."eth0".ipv6.addresses = pkgs.lib.flatten (pkgs.lib.attrsets.mapAttrsToList
  16       (n: ips: map (ip: { address = ip; prefixLength = (if n == "main" && ip == pkgs.lib.head ips.ip6 then 64 else 128); }) (ips.ip6 or []))
  17       config.hostEnv.ips);
  18   };
  19
  20   imports = builtins.attrValues (import ../..);
  21
  22   boot.kernel.sysctl = {
  23     # https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md
  24     "net.ipv4.tcp_sack" = 0;
  25   };
  26   myServices.buildbot.enable = true;
  27   myServices.databases.enable = true;
  28   myServices.gitolite.enable = true;
  29   myServices.monitoring.enable = true;
  30   myServices.irc.enable = true;
  31   myServices.pub.enable = true;
  32   myServices.tasks.enable = true;
  33   myServices.mpd.enable = true;
  34   myServices.dns.enable = true;
  35   myServices.certificates.enable = true;
  36   myServices.websites.enable = true;
  37   myServices.mail.enable = true;
  38   myServices.ejabberd.enable = true;
  39   myServices.vpn.enable = true;
  40   services.pure-ftpd.enable = true;
  41   services.duplyBackup.enable = true;
  42   services.duplyBackup.profiles.oldies.rootDir = "/var/lib/oldies";
  43
  44   secrets.keys = [
  45     {
  46       dest = "rsync_backup/identity";
  47       user = "root";
  48       group = "root";
  49       permissions = "0400";
  50       text = config.myEnv.rsync_backup.ssh_key.private;
  51     }
  52   ];
  53   programs.ssh.knownHosts.dilion = {
  54     hostNames = ["dilion.immae.eu"];
  55     publicKey = let
  56       profile = config.myEnv.rsync_backup.profiles.dilion;
  57     in
  58       "${profile.host_key_type} ${profile.host_key}";
  59   };
  60
  61   deployment = {
  62     targetEnv = "hetzner";
  63     hetzner = {
  64       robotUser = config.myEnv.hetzner.user;
  65       robotPass = config.myEnv.hetzner.pass;
  66       mainIPv4 = config.hostEnv.ips.main.ip4;
  67       partitions = ''
  68         clearpart --all --initlabel --drives=sda,sdb
  69
  70         part swap1 --recommended --label=swap1 --fstype=swap --ondisk=sda
  71         part swap2 --recommended --label=swap2 --fstype=swap --ondisk=sdb
  72
  73         part raid.1 --grow --ondisk=sda
  74         part raid.2 --grow --ondisk=sdb
  75
  76         raid / --level=1 --device=md0 --fstype=ext4 --label=root raid.1 raid.2
  77       '';
  78     };
  79   };
  80
  81   services.cron = {
  82     enable = true;
  83     mailto = "cron@immae.eu";
  84     systemCronJobs = [
  85       ''
  86         # The star after /var/lib/* avoids deleting all folders in case of problem
  87         0 3,9,15,21 * * * root rsync -e "ssh -i /var/secrets/rsync_backup/identity" --new-compress -aAXv --delete --numeric-ids --super --rsync-path="sudo rsync" /var/lib/* backup@dilion.immae.eu: > /dev/null
  88         0 0 * * * root journalctl -q --since="25 hours ago" -u postfix -t postfix/smtpd -g "immae.eu.*Recipient address rejected"
  89         # Need a way to blacklist properly
  90         # 0 0 * * * root journalctl -q --since="25 hours ago" -u postfix -t postfix/smtpd -g "NOQUEUE:"
  91         0 0 * * * root journalctl -q --since="25 hours ago" -u postfix -t postfix/smtp -g "status=bounced"
  92       ''
  93     ];
  94   };
  95
  96   # This value determines the NixOS release with which your system is
  97   # to be compatible, in order to avoid breaking some software such as
  98   # database servers. You should change this only after NixOS release
  99   # notes say you should.
 100   # https://nixos.org/nixos/manual/release-notes.html
 101   system.stateVersion = "20.03"; # Did you read the comment?
 102 }