From 8a0f6938c745da7cb24baf99e91800d2e8baa3a6 Mon Sep 17 00:00:00 2001
From: 0xTux <0xtux@pm.me>
Date: Sat, 3 Aug 2024 05:45:49 +0530
Subject: [PATCH] add sops-nix and borgbackup

---
 .sops.yaml                    |  7 +++++
 flake.lock                    | 54 ++++++++++++++++++++++++++++++++++-
 flake.nix                     |  1 +
 hosts/controller/default.nix  | 38 +++++++++++++++++++++++-
 hosts/controller/secrets.yaml | 21 ++++++++++++++
 5 files changed, 119 insertions(+), 2 deletions(-)
 create mode 100644 .sops.yaml
 create mode 100644 hosts/controller/secrets.yaml

diff --git a/.sops.yaml b/.sops.yaml
new file mode 100644
index 0000000..7ee54d6
--- /dev/null
+++ b/.sops.yaml
@@ -0,0 +1,7 @@
+keys:
+  - &primary age14vktfes95f33vuefwnmuvryas7az04u76dsgyhfvsx73czkvmp2q7njkl4
+creation_rules:
+  - path_regex: hosts/controller/secrets.yaml$
+    key_groups:
+      - age:
+          - *primary
diff --git a/flake.lock b/flake.lock
index 116aad6..dee38f5 100755
--- a/flake.lock
+++ b/flake.lock
@@ -317,6 +317,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-stable_2": {
+      "locked": {
+        "lastModified": 1721524707,
+        "narHash": "sha256-5NctRsoE54N86nWd0psae70YSLfrOek3Kv1e8KoXe/0=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "556533a23879fc7e5f98dd2e0b31a6911a213171",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "release-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs_2": {
       "locked": {
         "lastModified": 1714253743,
@@ -349,6 +365,22 @@
         "type": "github"
       }
     },
+    "nixpkgs_4": {
+      "locked": {
+        "lastModified": 1721466660,
+        "narHash": "sha256-pFSxgSZqZ3h+5Du0KvEL1ccDZBwu4zvOil1zzrPNb3c=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "6e14bbce7bea6c4efd7adfa88a40dac750d80100",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nur": {
       "locked": {
         "lastModified": 1721571991,
@@ -390,7 +422,8 @@
         "nixos-wsl": "nixos-wsl",
         "nixpkgs": "nixpkgs",
         "nixpkgs-f2k": "nixpkgs-f2k",
-        "nur": "nur"
+        "nur": "nur",
+        "sops-nix": "sops-nix"
       }
     },
     "rust-analyzer-src": {
@@ -410,6 +443,25 @@
         "type": "github"
       }
     },
+    "sops-nix": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_4",
+        "nixpkgs-stable": "nixpkgs-stable_2"
+      },
+      "locked": {
+        "lastModified": 1722114803,
+        "narHash": "sha256-s6YhI8UHwQvO4cIFLwl1wZ1eS5Cuuw7ld2VzUchdFP0=",
+        "owner": "Mic92",
+        "repo": "sops-nix",
+        "rev": "eb34eb588132d653e4c4925d862f1e5a227cc2ab",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Mic92",
+        "repo": "sops-nix",
+        "type": "github"
+      }
+    },
     "systems": {
       "locked": {
         "lastModified": 1681028828,
diff --git a/flake.nix b/flake.nix
index cc48432..5ae44c6 100755
--- a/flake.nix
+++ b/flake.nix
@@ -18,6 +18,7 @@
     nixos-hardware.url = "github:nixos/nixos-hardware";
     nixpkgs-f2k.url = "github:moni-dz/nixpkgs-f2k";
     nur.url = "github:nix-community/nur";
+    sops-nix.url = "github:Mic92/sops-nix";
   };
 
   outputs = {
diff --git a/hosts/controller/default.nix b/hosts/controller/default.nix
index 63d561b..de148b1 100644
--- a/hosts/controller/default.nix
+++ b/hosts/controller/default.nix
@@ -1,5 +1,12 @@
-{pkgs, ...}: {
+{
+  pkgs,
+  inputs,
+  username,
+  config,
+  ...
+}: {
   imports = [
+    inputs.sops-nix.nixosModules.sops
     ./hardware-configuration.nix
     ../../modules/nixos/default.nix
     ../../modules/nixos/headscale.nix
@@ -11,6 +18,15 @@
     ../../modules/nixos/monitoring/promtail.nix
   ];
 
+  sops = {
+    age.keyFile = "/home/${username}/.config/sops/age/keys.txt";
+    secrets = {
+      borg_encryption_key = {
+        sopsFile = ./secrets.yaml;
+      };
+    };
+  };
+
   boot = {
     kernelPackages = pkgs.linuxPackages_zen;
     initrd.systemd.enable = true;
@@ -29,6 +45,26 @@
     sudo.wheelNeedsPassword = false;
   };
 
+  services = {
+    borgbackup.jobs.controller-backup = {
+      paths = [
+        "/var/lib/bitwarden_rs"
+        "/var/lib/gitea"
+        "/var/lib/headscale"
+        "/var/lib/grafana"
+        "/var/lib/loki"
+      ];
+      encryption = {
+        mode = "repokey-blake2";
+        passCommand = "cat ${config.sops.secrets.borg_encryption_key.path}";
+      };
+      environment.BORG_RSH = "ssh -i /home/${username}/.ssh/storagebox";
+      repo = "ssh://u416910@u416910.your-storagebox.de:23/./controller-backups";
+      compression = "auto,zstd";
+      startAt = "daily";
+    };
+  };
+
   programs = {
     zsh.enable = true;
     nix-ld = {
diff --git a/hosts/controller/secrets.yaml b/hosts/controller/secrets.yaml
new file mode 100644
index 0000000..f99432b
--- /dev/null
+++ b/hosts/controller/secrets.yaml
@@ -0,0 +1,21 @@
+borg_encryption_key: ENC[AES256_GCM,data:42q7OYR5HLqLzbCx0WZwurND8DGUnCw3fA+4ccEmNp4=,iv:GRj9jXnlfqDoxr55hS97gjqLzIP7rjqoYtRHlU5/9Lo=,tag:ybr8V9RumsU94ja0bLnfNA==,type:str]
+sops:
+    kms: []
+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    age:
+        - recipient: age14vktfes95f33vuefwnmuvryas7az04u76dsgyhfvsx73czkvmp2q7njkl4
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSAwSzNTUzdTYzNpT21DL3gy
+            bjhHcXFWQjI5c0lSRUEwZXR2UmxOeG5jMEI4Ckg1OWx3NzVOWjIzRWtCblp5K2RK
+            b21xL2tBWDFqRXI2ZTloR0xwZkhtclUKLS0tIHFaYzM1dWdyUC95UWlsQU1xWjNV
+            akhaWXdrbXI0TDNNMlppcGovbjNia1EKNomA6zlZmQKE1DtX6JlurBxEkG9aiwjn
+            RZd5a9XPH8F1XhQF1tcZS+m3hGY00V7Zwiqe68PiiYWpxzZ/sSeR5A==
+            -----END AGE ENCRYPTED FILE-----
+    lastmodified: "2024-08-02T22:42:23Z"
+    mac: ENC[AES256_GCM,data:C4ueRlhrqollpi6ZE+126idf2SiAd2GooO7CTWR49ACW/y4q50B8girPtuY7Pgig0y/U0rWIFHFwmOwXyJJ8A6YtzD0VzWhZN7Aeb7HGvu/0o4V5OPjH1ZdQ6bb8YyeMQ5RljnG7/Pa/QasFS6h0pv3jnkKYrCCkbxNmKk/DcLY=,iv:UXi8rBLkdgp/bCxIE+6PvgdPv6xJmKtQX/WUVmoKeKc=,tag:Fpo44OFp0CYVAwDFx5WbWQ==,type:str]
+    pgp: []
+    unencrypted_suffix: _unencrypted
+    version: 3.9.0