base: enable rebuilding nixos-config without updating the channels used

README.MD

@@ -26,10 +26,14 @@ Det er sikkert lurt å lage en PR først om du ikke er vandt til nix enda.
 Innen 24h skal alle systemene hente ned den nye konfigurasjonen og deploye den.
 
 Du kan tvinge en maskin til å oppdatere seg før dette ved å kjøre:
-`nixos-rebuild switch --update-input nixpkgs --update-input nixpkgs-unstable --no-write-lock-file --refresh --flake git+https://git.pvv.ntnu.no/Drift/pvv-nixos-config.git --upgrade`
+`nixos-rebuild switch --update-input nixpkgs --update-input nixpkgs-unstable --no-write-lock-file --refresh --upgrade --flake git+https://git.pvv.ntnu.no/Drift/pvv-nixos-config.git`
 
 som root på maskinen.
 
+Hvis du ikke har lyst til å oppdatere alle pakkene (og kanskje måtte vente en stund!) kan du kjøre
+
+`nixos-rebuild switch --override-input nixpkgs nixpkgs --override-input nixpkgs-unstable nixpkgs-unstable --flake git+https://git.pvv.ntnu.no/Drift/pvv-nixos-config.git`
+
 ## Seksjonen for hemmeligheter
 
 For at hemmeligheter ikke skal deles med hele verden i git - eller å være world

base/nix.nix

@@ -23,8 +23,12 @@
     */
     registry = {
       "nixpkgs".flake = inputs.nixpkgs;
+      "nixpkgs-unstable".flake = inputs.nixpkgs-unstable;
       "pvv-nix".flake = inputs.self;
     };
-    nixPath = [ "nixpkgs=${inputs.nixpkgs}" ];
+    nixPath = [
+      "nixpkgs=${inputs.nixpkgs}"
+      "unstable=${inputs.nixpkgs-unstable}"
+    ];
   };
-}
+}

flake.lock

@@ -214,11 +214,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1722722932,
-        "narHash": "sha256-K81a2GQpY2kRX+C9ek9r91THlZB674CqRTSMMb5IO7E=",
+        "lastModified": 1725212759,
+        "narHash": "sha256-yZBsefIarFUEhFRj+rCGMp9Zvag3MCafqV/JfGVRVwc=",
         "ref": "refs/heads/master",
-        "rev": "6580cfe546c902cdf11e17b0b8aa30b3c412bb34",
-        "revCount": 465,
+        "rev": "e7b66b4bc6a89bab74bac45b87e9434f5165355f",
+        "revCount": 473,
         "type": "git",
         "url": "https://git.pvv.ntnu.no/Projects/nettsiden.git"
       },

hosts/bicep/services/mysql.nix

@@ -1,7 +1,4 @@
 { pkgs, lib, config, values, ... }:
-let
-  backupDir = "/var/lib/mysql/backups";
-in
 {
   sops.secrets."mysql/password" = {
     owner = "mysql";
@@ -39,6 +36,11 @@ in
     }];
   };
 
+  services.mysqlBackup = {
+    enable = true;
+    location = "/var/lib/mysql/backups";
+  };
+
   networking.firewall.allowedTCPPorts = [ 3306 ];
 
   systemd.services.mysql.serviceConfig = {
@@ -48,58 +50,4 @@ in
       values.ipv6-space
     ];
   };
-
-  # NOTE: instead of having the upstream nixpkgs postgres backup unit trigger
-  #       another unit, it was easier to just make one ourselves
-  systemd.services."backup-mysql" = {
-    description = "Backup MySQL data";
-    requires = [ "mysql.service" ];
-
-    path = [
-      pkgs.coreutils
-      pkgs.rsync
-      pkgs.gzip
-      config.services.mysql.package
-    ];
-
-    script = let
-      rotations = 10;
-      # rsyncTarget = "root@isvegg.pvv.ntnu.no:/mnt/backup1/bicep/mysql";
-      rsyncTarget = "/data/backup/mysql";
-    in ''
-      set -eo pipefail
-
-      mysqldump --all-databases | gzip -c -9 --rsyncable > "${backupDir}/$(date --iso-8601)-dump.sql.gz"
-
-      while [ $(ls -1 "${backupDir}" | wc -l) -gt ${toString rotations} ]; do
-        rm $(find "${backupDir}" -type f -printf '%T+ %p\n' | sort | head -n 1 | cut -d' ' -f2)
-      done
-
-      rsync -avz --delete "${backupDir}" '${rsyncTarget}'
-    '';
-
-    serviceConfig = {
-      Type = "oneshot";
-      User = "mysql";
-      Group = "mysql";
-      UMask = "0077";
-
-      Nice = 19;
-      IOSchedulingClass = "best-effort";
-      IOSchedulingPriority = 7;
-
-      ReadWritePaths = [
-        backupDir
-        "/data/backup/mysql" # NOTE: should not be part of this option once rsyncTarget is remote
-      ];
-    };
-
-    startAt = "*-*-* 02:15:00";
-  };
-
-  systemd.tmpfiles.settings."10-mysql-backup".${backupDir}.d = {
-    user = "mysql";
-    group = "mysql";
-    mode = "700";
-  };
 }

hosts/bicep/services/postgres.nix

@@ -1,7 +1,4 @@
-{ config, pkgs, lib, ... }:
-let
-  backupDir = "/var/lib/postgresql/backups";
-in
+{ config, pkgs, ... }:
 {
   services.postgresql = {
     enable = true;
@@ -93,57 +90,9 @@ in
   networking.firewall.allowedTCPPorts = [ 5432 ];
   networking.firewall.allowedUDPPorts = [ 5432 ];
 
-  # NOTE: instead of having the upstream nixpkgs postgres backup unit trigger
-  #       another unit, it was easier to just make one ourselves
-  systemd.services."backup-postgresql" = {
-    description = "Backup PostgreSQL data";
-    requires = [ "postgresql.service" ];
-
-    path = [
-      pkgs.coreutils
-      pkgs.rsync
-      pkgs.gzip
-      config.services.postgresql.package
-    ];
-
-    script = let
-      rotations = 10;
-      # rsyncTarget = "root@isvegg.pvv.ntnu.no:/mnt/backup1/bicep/postgresql";
-      rsyncTarget = "/data/backup/postgresql";
-    in ''
-      set -eo pipefail
-
-      pg_dumpall -U postgres | gzip -c -9 --rsyncable > "${backupDir}/$(date --iso-8601)-dump.sql.gz"
-
-      while [ $(ls -1 "${backupDir}" | wc -l) -gt ${toString rotations} ]; do
-        rm $(find "${backupDir}" -type f -printf '%T+ %p\n' | sort | head -n 1 | cut -d' ' -f2)
-      done
-
-      rsync -avz --delete "${backupDir}" '${rsyncTarget}'
-    '';
-
-    serviceConfig = {
-      Type = "oneshot";
-      User = "postgres";
-      Group = "postgres";
-      UMask = "0077";
-
-      Nice = 19;
-      IOSchedulingClass = "best-effort";
-      IOSchedulingPriority = 7;
-
-      ReadWritePaths = [
-        backupDir
-        "/data/backup/postgresql" # NOTE: should not be part of this option once rsyncTarget is remote
-      ];
-    };
-
-    startAt = "*-*-* 01:15:00";
-  };
-
-  systemd.tmpfiles.settings."10-postgresql-backup".${backupDir}.d = {
-    user = "postgres";
-    group = "postgres";
-    mode = "700";
+  services.postgresqlBackup = {
+    enable = true;
+    location = "/var/lib/postgres/backups";
+    backupAll = true;
   };
 }