WIP: backup mysql

flake.lock

@@ -207,25 +207,6 @@
         "url": "https://git.pvv.ntnu.no/Projects/calendar-bot.git"
       }
     },
-    "pvv-doorbell-bot": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "dirtyRev": "cec320746bbf5b5bc6618a145c1a997ebd0b5196-dirty",
-        "dirtyShortRev": "cec3207-dirty",
-        "lastModified": 1724515328,
-        "narHash": "sha256-Vj3ZJkCaLq+6d1LJtl7Hg5f7XV4NDPeNC1xEyu9QkOI=",
-        "type": "git",
-        "url": "file:///home/felixalb/doorbell-matrix-bot"
-      },
-      "original": {
-        "type": "git",
-        "url": "file:///home/felixalb/doorbell-matrix-bot"
-      }
-    },
     "pvv-nettsiden": {
       "inputs": {
         "nixpkgs": [
@@ -256,7 +237,6 @@
         "nixpkgs": "nixpkgs",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "pvv-calendar-bot": "pvv-calendar-bot",
-        "pvv-doorbell-bot": "pvv-doorbell-bot",
         "pvv-nettsiden": "pvv-nettsiden",
         "sops-nix": "sops-nix"
       }

flake.nix

@@ -17,10 +17,6 @@
     pvv-calendar-bot.url = "git+https://git.pvv.ntnu.no/Projects/calendar-bot.git";
     pvv-calendar-bot.inputs.nixpkgs.follows = "nixpkgs";
 
-    pvv-doorbell-bot.url = "git+https://git.pvv.ntnu.no/Projects/doorbell-matrix-bot.git";
-    #pvv-doorbell-bot.url = "git+file:///home/felixalb/doorbell-matrix-bot";
-    pvv-doorbell-bot.inputs.nixpkgs.follows = "nixpkgs";
-
     matrix-next.url = "github:dali99/nixos-matrix-modules/v0.6.0";
     matrix-next.inputs.nixpkgs.follows = "nixpkgs";
 
@@ -85,11 +81,9 @@
         modules = [
           inputs.matrix-next.nixosModules.default
           inputs.pvv-calendar-bot.nixosModules.default
-          inputs.pvv-doorbell-bot.nixosModules.default
         ];
         overlays = [
           inputs.pvv-calendar-bot.overlays.x86_64-linux.default
-          inputs.pvv-doorbell-bot.overlays.x86_64-linux.default
         ];
       };
       bekkalokk = stableNixosConfig "bekkalokk" {

hosts/bicep/configuration.nix

@@ -9,11 +9,10 @@
 
     ./acmeCert.nix
 
-    ./services/calendar-bot.nix
-    ./services/doorbell-bot.nix
-    ./services/mysql.nix
     ./services/mysql.nix
     ./services/postgres.nix
+    ./services/mysql.nix
+    ./services/calendar-bot.nix
 
     ./services/matrix
   ];

hosts/bicep/services/doorbell-bot.nix

@@ -1,16 +0,0 @@
-{ config, lib, pkgs, ... }:
-let
-  cfg = config.services.pvv-doorbell-bot;
-in {
-  sops.secrets."doorbell-bot/config-json" = {
-    owner = cfg.user;
-    group = cfg.group;
-  };
-
-  services.pvv-doorbell-bot = {
-    enable = true;
-    settings = {
-      configFile = config.sops.secrets."doorbell-bot/config-json".path;
-    };
-  };
-}

hosts/bicep/services/mysql.nix

@@ -1,4 +1,7 @@
 { pkgs, lib, config, values, ... }:
+let
+  backupDir = "/var/lib/mysql/backups";
+in
 {
   sops.secrets."mysql/password" = {
     owner = "mysql";
@@ -36,11 +39,6 @@
     }];
   };
 
-  services.mysqlBackup = {
-    enable = true;
-    location = "/var/lib/mysql/backups";
-  };
-
   networking.firewall.allowedTCPPorts = [ 3306 ];
 
   systemd.services.mysql.serviceConfig = {
@@ -50,4 +48,51 @@
       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;
+      sshTarget1 = "root@isvegg.pvv.ntnu.no:/mnt/backup1/bicep/mysql";
+      sshTarget2 = "root@isvegg.pvv.ntnu.no:/mnt/backup2/bicep/mysql";
+    in ''
+      set -eo pipefail
+
+      mysqldump | 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 "${backupDir}" '${sshTarget1}'
+      rsync -avz --delete "${backupDir}" '${sshTarget2}'
+    '';
+
+    serviceConfig = {
+      Type = "oneshot";
+      User = "mysql";
+      Group = "mysql";
+      UMask = "0077";
+      ReadWritePaths = [ backupDir ];
+    };
+
+    startAt = "*-*-* 02:15:00";
+  };
+
+  systemd.tmpfiles.settings."10-mysql-backup".${backupDir}.d = {
+    user = "mysql";
+    group = "mysql";
+    mode = "700";
+  };
 }

hosts/bicep/services/postgres.nix

@@ -1,6 +1,7 @@
-{ config, pkgs, ... }:
+{ config, pkgs, lib, ... }:
 let
   sslCert = config.security.acme.certs."postgres.pvv.ntnu.no";
+  backupDir = "/var/lib/postgresql/backups";
 in
 {
   services.postgresql = {
@@ -89,9 +90,50 @@ in
   networking.firewall.allowedTCPPorts = [ 5432 ];
   networking.firewall.allowedUDPPorts = [ 5432 ];
 
-  services.postgresqlBackup = {
-    enable = true;
-    location = "/var/lib/postgres/backups";
-    backupAll = true;
+  # 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;
+      sshTarget1 = "root@isvegg.pvv.ntnu.no:/mnt/backup1/bicep/postgresql";
+      sshTarget2 = "root@isvegg.pvv.ntnu.no:/mnt/backup2/bicep/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 "${backupDir}" '${sshTarget1}'
+      rsync -avz --delete "${backupDir}" '${sshTarget2}'
+    '';
+
+    serviceConfig = {
+      Type = "oneshot";
+      User = "postgres";
+      Group = "postgres";
+      UMask = "0077";
+      ReadWritePaths = [ backupDir ];
+    };
+
+    startAt = "*-*-* 01:15:00";
+  };
+
+  systemd.tmpfiles.settings."10-postgresql-backup".${backupDir}.d = {
+    user = "postgres";
+    group = "postgres";
+    mode = "700";
   };
 }

secrets/bicep/bicep.yaml

@@ -1,8 +1,6 @@
 calendar-bot:
     matrix_token: ENC[AES256_GCM,data:zJv9sw6pEzb9hxKT682wsD87HC9iejbps2wl2Z5QW1XZUSBHdcqyg1pxd+jFKTeKGQ==,iv:zDbvF1H98NsECjCtGXS+Y9HIhXowzz9HF9mltqnArog=,tag:/ftcOSQ13ElkVJBxYIMUGQ==,type:str]
     mysql_password: ENC[AES256_GCM,data:Gqag8yOgPH3ntoT5TmaqJWv1j+si2qIyz5Ryfw5E2A==,iv:kQDcxnPfwJQcFovI4f87UDt18F8ah3z5xeY86KmdCyY=,tag:A1sCSNXJziAmtUWohqwJgg==,type:str]
-doorbell-bot:
-    config-json: ENC[AES256_GCM,data:QNFHiUqaBWfW9ZRAkZo9M18AMbn/oSxvEMq1N1NsDcBjxJMo/OE36fz1Uf4TagGccCDkWy56wSVSFZm8KZnXVaQ/X0EgJkUK1JZyR7i5yiEW8ByLaVzThMWBwxQoj2cz48z53krzfddyl250rLFQRa7Fco74yTFfBWruf/1clN5O/iHFspeW7uJtQh/oyFIVb87YisjKU2+jpU3IeDNsO6VFWOoOJd+ACmfwsAY0wOz5lzBEIrdU2k/PMgSVzECMV4S5ipwIUmVUpGzbvgAWZQGtsUeVevAbvZ1QgyH6bhDIUheeUrOKN0cbgEMc/xIi7yZ+VWHOMBqb8LkyBvunG2TjK31B1HAGL/krBS+gvvQnW0ZN,iv:K0djdxNOGaHBkE4vyh/22fruAHVsZYVT68cdVoMmogw=,tag:3fjjzD3bghvGy3aZ7/Ienw==,type:str]
 mysql:
     password: ENC[AES256_GCM,data:KqEe0TVdeMIzPKsmFg9x0X9xWijnOk306ycyXTm2Tpqo/O0F,iv:Y+hlQ8n1ZIP9ncXBzd2kCSs/DWVTWhiEluFVwZFKRCA=,tag:xlaUk0Wftk62LpYE5pKNQw==,type:str]
 sops:
@@ -65,8 +63,8 @@ sops:
             cTh5bnJ3WW90aXRCSUp6NHFYeU1tZ0kK4afdtJwGNu6wLRI0fuu+mBVeqVeB0rgX
             0q5hwyzjiRnHnyjF38CmcGgydSfDRmF6P+WIMbCwXC6LwfRhAmBGPg==
             -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2024-08-24T16:49:06Z"
-    mac: ENC[AES256_GCM,data:A5pYM3yNt5GdlvpdDbRXxQwUccC/dr5JZwPBMjjx4ZRaJMbewpmGL/ySITnsCEuxOG1cagc1S28ti8k3z0bR4rfFlt/fZ93K8uwI9rT6KW5pSEAa1vPEz8Jq+7asfJIBMCpxFxN704JDSeOnBMaSHwQdICdmG4jfN/F+YbXTPIA=,iv:Y6gloFlYtnJZ3kzcUtZZZmJQ8KowQ29pwZaqo/ePrm8=,tag:r8XFLU5PGMr3U3K0N0cmlQ==,type:str]
+    lastmodified: "2024-08-15T21:18:33Z"
+    mac: ENC[AES256_GCM,data:uR5HgeDAYqoqB9kk1V6p0T30+v6WpQJi4+qIeCDRnoUPnQKUVR10hvBhICck+E+Uh8p+tGhM6Uf3YrAJAV0ZCUiNJjtwDJQQLUDT53vdOAXN4xADCQqNuhgVwVMaruoTheEiwOswRuhFeEwy0gBj3Ze2pu47lueHYclmEzumLeQ=,iv:t0UyXN2YaR2m7M/pV2wTLJG5wVfqTIUs7wSQMmyeTVw=,tag:O7dIffzrDAXz3kGx5uazhw==,type:str]
     pgp:
         - created_at: "2024-08-04T00:03:40Z"
           enc: |-