modules/private/system/backup-2.nix

   1 { config, pkgs, resources, name, lib, ... }:
   2 {
   3   deployment = {
   4     targetUser = "root";
   5     targetHost = lib.head config.hostEnv.ips.main.ip4;
   6     substituteOnDestination = true;
   7   };
   8   # ssh-keyscan backup-2 | nix-shell -p ssh-to-age --run ssh-to-age
   9   secrets.ageKeys = [ "age1kk3nr27qu42j28mcfdag5lhq0zu2pky7gfanvne8l4z2ctevjpgskmw0sr" ];
  10   secrets.keys = {
  11     "rsync_backup/identity" = {
  12       user = "backup";
  13       group = "backup";
  14       permissions = "0400";
  15       text = config.myEnv.rsync_backup.ssh_key.private;
  16     };
  17     "rsync_backup/identity.pub" = {
  18       user = "backup";
  19       group = "backup";
  20       permissions = "0444";
  21       text = config.myEnv.rsync_backup.ssh_key.public;
  22     };
  23   };
  24   boot.kernelPackages = pkgs.linuxPackages_latest;
  25   myEnv = import ../../../nixops/secrets/environment.nix;
  26
  27   imports = [ <nixpkgs/nixos/modules/profiles/qemu-guest.nix> ] ++ builtins.attrValues (import ../..);
  28
  29   fileSystems = {
  30     "/backup2" = {
  31       fsType = "ext4";
  32       device = "UUID=b9425333-f567-435d-94d8-b26c22d93426";
  33     };
  34     "/" = { device = "/dev/sda1"; fsType = "ext4"; };
  35   };
  36
  37   networking = {
  38     firewall.enable = true;
  39     interfaces."ens3".ipv4.addresses = pkgs.lib.flatten (pkgs.lib.attrsets.mapAttrsToList
  40       (n: ips: map (ip: { address = ip; prefixLength = 32; }) (ips.ip4 or []))
  41       (pkgs.lib.attrsets.filterAttrs (n: v: n != "main") config.hostEnv.ips));
  42     interfaces."ens3".ipv6.addresses = pkgs.lib.flatten (pkgs.lib.attrsets.mapAttrsToList
  43       (n: ips: map (ip: { address = ip; prefixLength = (if n == "main" && ip == pkgs.lib.head ips.ip6 then 64 else 128); }) (ips.ip6 or []))
  44       config.hostEnv.ips);
  45     defaultGateway6 = { address = "fe80::1"; interface = "ens3"; };
  46   };
  47
  48   boot.loader.grub.device = "nodev";
  49
  50   myServices.certificates.enable = true;
  51   security.acme.certs."${name}" = {
  52     group = config.services.nginx.group;
  53   };
  54   services.nginx = {
  55     enable = true;
  56     recommendedOptimisation = true;
  57     recommendedGzipSettings = true;
  58     recommendedProxySettings = true;
  59   };
  60   networking.firewall.allowedTCPPorts = [ 80 443 ];
  61
  62   services.cron = {
  63     mailto = "cron@immae.eu";
  64     enable = true;
  65   };
  66
  67   myServices.chatonsProperties.hostings.rsync-backup = {
  68     file.datetime = "2022-08-27T16:00:00";
  69     hosting = {
  70       name = "Rsync backups";
  71       description = "Remote initiated rsync backups";
  72       website = "backup-2.v.immae.eu";
  73       status.level = "OK";
  74       status.description = "OK";
  75       registration.load = "OPEN";
  76       install.type = "PACKAGE";
  77     };
  78     software = {
  79       name = "rsync";
  80       website = "https://rsync.samba.org/";
  81       license.url = "https://rsync.samba.org/GPL.html";
  82       license.name = "GNU General Public License version 3";
  83       version = pkgs.rsync.version;
  84       source.url = "https://github.com/WayneD/rsync";
  85     };
  86   };
  87
  88   services.rsyncBackup = {
  89     mountpoint = "/backup2";
  90     profiles = config.myEnv.rsync_backup.profiles;
  91     ssh_key_public = config.secrets.fullPaths."rsync_backup/identity.pub";
  92     ssh_key_private = config.secrets.fullPaths."rsync_backup/identity";
  93   };
  94
  95   myServices.mailRelay.enable = true;
  96   myServices.mailBackup.enable = true;
  97   myServices.monitoring.enable = true;
  98   myServices.databasesReplication = {
  99     postgresql = {
 100       enable = true;
 101       base = "/backup2";
 102       mainPackage = pkgs.postgresql;
 103       hosts = {
 104         eldiron = {
 105           slot = "backup_2";
 106           connection = "postgresql://backup-2:${config.hostEnv.ldap.password}@eldiron.immae.eu";
 107           package = pkgs.postgresql;
 108         };
 109       };
 110     };
 111     mariadb = {
 112       enable = true;
 113       base = "/backup2";
 114       hosts = {
 115         eldiron = {
 116           serverId = 2;
 117           # mysql resolves "backup-2" host and checks the ip, but uses /etc/hosts which only contains ip4
 118           host = lib.head config.myEnv.servers.eldiron.ips.main.ip4;
 119           port = "3306";
 120           user = "backup-2";
 121           password = config.hostEnv.ldap.password;
 122           dumpUser = "root";
 123           dumpPassword = config.myEnv.databases.mysql.systemUsers.root;
 124         };
 125       };
 126     };
 127     redis = {
 128       enable = true;
 129       base = "/backup2";
 130       hosts = {
 131         eldiron = {
 132           host = "127.0.0.1";
 133           port = "16379";
 134         };
 135       };
 136     };
 137     openldap = {
 138       enable = true;
 139       base = "/backup2";
 140       hosts = {
 141         eldiron = {
 142           url = "ldaps://${config.myEnv.ldap.host}:636";
 143           dn = config.myEnv.ldap.replication_dn;
 144           password = config.myEnv.ldap.replication_pw;
 145           base = config.myEnv.ldap.base;
 146         };
 147       };
 148     };
 149   };
 150
 151   # This value determines the NixOS release with which your system is
 152   # to be compatible, in order to avoid breaking some software such as
 153   # database servers. You should change this only after NixOS release
 154   # notes say you should.
 155   # https://nixos.org/nixos/manual/release-notes.html
 156   system.stateVersion = "20.03"; # Did you read the comment?
 157 }