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