feat: migrate alpha and add impermanence

2025-08-23 06:51:02 +05:30 · 2025-07-10 03:12:55 +05:30
parent a913f9cce0
commit bf8183f87a
7 changed files with 237 additions and 158 deletions
--- a/hosts/alpha/default.nix
+++ b/hosts/alpha/default.nix
@@ -1,13 +1,18 @@
 {
-  pkgs,
-  username,
-  config,
-  email,
+  modulesPath,
  inputs,
+  username,
+  lib,
+  email,
+  config,
  ...
 }: {
  imports = [
-    ./hardware.nix
+    (modulesPath + "/installer/scan/not-detected.nix")
+    (modulesPath + "/profiles/qemu-guest.nix")
+    inputs.disko.nixosModules.default
+    (import ./disko.nix {device = "/dev/vda";})
+
    ../common
    ../../modules/nixos/selfhosted/uptime-kuma.nix
  ];
@@ -17,6 +22,11 @@

  tux.services.tfolio.enable = true;

+  tux.services.nginxStreamProxy = {
+    enable = true;
+    upstreamServers = inputs.nix-secrets.proxy-servers;
+  };
+
  sops.secrets = {
    borg_encryption_key = {
      sopsFile = ./secrets.yaml;
@@ -31,13 +41,53 @@
    };
  };

+  nixpkgs = {
+    hostPlatform = "x86_64-linux";
+  };
+
  boot = {
-    kernelPackages = pkgs.linuxPackages_zen;
-    initrd.systemd.enable = true;
+    initrd.systemd = {
+      enable = lib.mkForce true;
+
+      services.wipe-my-fs = {
+        wantedBy = ["initrd.target"];
+        after = ["initrd-root-device.target"];
+        before = ["sysroot.mount"];
+        unitConfig.DefaultDependencies = "no";
+        serviceConfig.Type = "oneshot";
+        script = ''
+          mkdir /btrfs_tmp
+          mount /dev/disk/by-partlabel/disk-primary-root /btrfs_tmp
+
+          if [[ -e /btrfs_tmp/root ]]; then
+              mkdir -p /btrfs_tmp/old_roots
+              timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/root)" "+%Y-%m-%-d_%H:%M:%S")
+              mv /btrfs_tmp/root "/btrfs_tmp/old_roots/$timestamp"
+          fi
+
+          delete_subvolume_recursively() {
+              IFS=$'\n'
+              for i in $(btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do
+                  delete_subvolume_recursively "/btrfs_tmp/$i"
+              done
+              btrfs subvolume delete "$1"
+          }
+
+          for i in $(find /btrfs_tmp/old_roots/ -maxdepth 1 -mtime +30); do
+              delete_subvolume_recursively "$i"
+          done
+
+          btrfs subvolume create /btrfs_tmp/root
+          umount /btrfs_tmp
+        '';
+      };
+    };

    loader = {
-      grub.device = "/dev/sda";
-      timeout = 1;
+      grub = {
+        efiSupport = true;
+        efiInstallAsRemovable = true;
+      };
    };
  };

@@ -46,7 +96,7 @@

    firewall = {
      enable = true;
-      allowedTCPPorts = [80 443 22];
+      allowedTCPPorts = [80 443 22 23];
    };
  };

@@ -56,6 +106,7 @@
      defaults.email = "${email}";
      certs = {
        "tux.rs" = {
+          group = "nginx";
          domain = "*.tux.rs";
          extraDomainNames = ["tux.rs"];
          dnsProvider = "cloudflare";
@@ -70,11 +121,6 @@

  users.users.nginx.extraGroups = ["acme"];

-  tux.services.nginxStreamProxy = {
-    enable = true;
-    upstreamServers = inputs.nix-secrets.proxy-servers;
-  };
-
  services = {
    nginx = {
      recommendedGzipSettings = true;
@@ -89,8 +135,22 @@
    dconf.enable = true;
  };

+  programs.fuse.userAllowOther = true;
+  fileSystems."/persist".neededForBoot = true;
  environment.persistence."/persist" = {
-    enable = false;
+    hideMounts = true;
+    directories = [
+      "/var/log"
+      "/var/lib/acme"
+      "/var/lib/nixos"
+      "/var/lib/private"
+    ];
+    files = [
+      "/etc/ssh/ssh_host_ed25519_key"
+      "/etc/ssh/ssh_host_ed25519_key.pub"
+      "/etc/ssh/ssh_host_rsa_key"
+      "/etc/ssh/ssh_host_rsa_key.pub"
+    ];
  };

  home-manager.users.${username} = {
@@ -99,5 +159,5 @@
    ];
  };

-  system.stateVersion = "23.11";
+  system.stateVersion = "24.11";
 }
--- a/hosts/alpha/disko.nix
+++ b/hosts/alpha/disko.nix
@@ -0,0 +1,53 @@
+{device ? throw "Set this to the disk device, e.g. /dev/nvme0n1", ...}: {
+  disko.devices.disk.primary = {
+    inherit device;
+    type = "disk";
+    content = {
+      type = "gpt"; # GPT partitioning scheme
+      partitions = {
+        boot = {
+          name = "boot";
+          size = "1M";
+          type = "EF02";
+        };
+        # EFI Partition
+        ESP = {
+          size = "512M";
+          type = "EF00";
+          content = {
+            type = "filesystem";
+            format = "vfat";
+            mountpoint = "/boot";
+            mountOptions = ["defaults" "umask=0077"];
+          };
+        };
+        # Btrfs Root Partition
+        root = {
+          size = "100%"; # Use remaining space
+          type = "8300"; # Linux filesystem type
+          content = {
+            type = "btrfs";
+            subvolumes = {
+              "/root" = {
+                mountOptions = ["compress=zstd"]; # Compression for better performance
+                mountpoint = "/"; # Root subvolume
+              };
+              "/persist" = {
+                mountOptions = ["compress=zstd"]; # Compression for persistent data
+                mountpoint = "/persist"; # Persistent subvolume
+              };
+              "/nix" = {
+                mountOptions = [
+                  "compress=zstd"
+                  "noatime"
+                  "noacl"
+                ]; # Optimize for Nix store
+                mountpoint = "/nix"; # Nix subvolume
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}
--- a/hosts/alpha/hardware.nix
+++ b/hosts/alpha/hardware.nix
@@ -1,33 +0,0 @@
-# Do not modify this file!  It was generated by ‘nixos-generate-config’
-# and may be overwritten by future invocations.  Please make changes
-# to /etc/nixos/configuration.nix instead.
-{
-  lib,
-  modulesPath,
-  ...
-}: {
-  imports = [
-    (modulesPath + "/profiles/qemu-guest.nix")
-  ];
-
-  boot.initrd.availableKernelModules = ["ahci" "xhci_pci" "virtio_pci" "virtio_scsi" "sd_mod" "sr_mod"];
-  boot.initrd.kernelModules = [];
-  boot.kernelModules = [];
-  boot.extraModulePackages = [];
-
-  fileSystems."/" = {
-    device = "/dev/disk/by-uuid/471d0988-e57c-4767-a2b4-c93797a8c16f";
-    fsType = "ext4";
-  };
-
-  swapDevices = [];
-
-  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
-  # (the default) this is the recommended approach. When using systemd-networkd it's
-  # still possible to use this option, but it's recommended to use it in conjunction
-  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
-  networking.useDHCP = lib.mkDefault true;
-  # networking.interfaces.eth0.useDHCP = lib.mkDefault true;
-
-  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
-}
--- a/hosts/alpha/home.nix
+++ b/hosts/alpha/home.nix
@@ -1,3 +1,12 @@
-{...}: {
-  home.stateVersion = "23.11";
+{username, ...}: {
+  home.persistence."/persist/home/${username}" = {
+    directories = [
+      "Projects"
+      ".ssh"
+      ".local/share/zsh"
+    ];
+    allowOther = true;
+  };
+
+  home.stateVersion = "24.11";
 }
--- a/hosts/alpha/secrets.yaml
+++ b/hosts/alpha/secrets.yaml
@@ -1,33 +1,28 @@
-borg_encryption_key: ENC[AES256_GCM,data:4rS4RVUbSErLEVJuUluYOrw0m2LlYP7zEeYTL4yTmc4=,iv:epNhm2nSDF4Lp+Iu/vZuDiTna+1q59lY7Ztmpcpmb5o=,tag:7o0MwZBdiDSPaL07qVOfWg==,type:str]
+borg_encryption_key: ENC[AES256_GCM,data:EK1f7J4ea80K7LO16pPmkh246xmXoJEiCKzPbiRCmjQ=,iv:3vae+IAAgDx+0NPgml07kbT9kc4RpzDd1oj2Qb6ZqdM=,tag:aXj3IwzfeQ8+tGjSpq76bw==,type:str]
 cloudflare_credentials:
-    email: ENC[AES256_GCM,data:Re656wFjQWWNO/k=,iv:NsRdtzMbkOPS9kN/y/IYzRrBr+xmDXp87DTiNwHKesc=,tag:4hGnmto08H2MKxk/7QkI5w==,type:str]
-    dns_api_token: ENC[AES256_GCM,data:703Nk1PaePWYuKNVJkSVTplAvsSTLrYrWdhZlTqlMNRa6m2j5neahg==,iv:RHpz1O1TgFsooYGIJiI8Owwmk5hzd+x+DFADvt+k9C0=,tag:zlDnKbLbSBVXMaHOnk0AuQ==,type:str]
+    email: ENC[AES256_GCM,data:w9ghChGxgV7OVeM=,iv:Qtl/pMmXGjhZ9dMRkxeyEDncGfY/YPy51eJrZ6mOgGg=,tag:oi7OoTf4TnUknblZ3lPDzQ==,type:str]
+    dns_api_token: ENC[AES256_GCM,data:lMoqQs9MZ646ESJUxN2dtIopNS8P55JARk6wyfaJ8ad9ABvk268oWQ==,iv:Ez4y/kKPsRuIH9mEcpS3IU4j3kK8F6iBBFOnIf9Ck60=,tag:7I0eE8PoohH9KtiHziagrg==,type:str]
 sops:
-    kms: []
-    gcp_kms: []
-    azure_kv: []
-    hc_vault: []
    age:
        - recipient: age14vktfes95f33vuefwnmuvryas7az04u76dsgyhfvsx73czkvmp2q7njkl4
          enc: |
            -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBkTnRhZVg3MmNiOFpoeTE3
-            SXdtRXN1VS82S3AveDFMRjFYQVJpMDdyQWowCjJrQlIwN2VHQUlUazNaMERnRDJR
-            dFQ2VUpDMlJENVU5cWtIY3pZZU9wSmcKLS0tIEF1NzRkSHJ5cTQrM3RWdUtrYzkw
-            VXI3QzE5UlBhS2g1RUl0TEtaS0NPTW8KAQ+9Hk3HNMhwm33T3mzgkavs6mx4zKqZ
-            xjfB5d5W5UI+7uYC+RQNNA/cVxAgkMiW4OL4HAt2hXD6lrsjNzxzpQ==
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB3NjIrVVlPVW9qTU9vMlMw
+            K3BtRHZaS0h0WmlmMjF3YjhHSFZtNmFzdjNZCjRKQ0UwWTc2L3NOY1AyZnR2K2hF
+            QkQ4blQvd0paRHd6c3dWaU5XbmV4S28KLS0tIExtWnR0djB5WU9lajVJeU5udlBQ
+            eDlMemQ1c1FkazlRaDhPUzNBcVh2bWsK544MNSGooJPKL7hxQ+yvPRROw3RER7p8
+            jbUVxMp4ZD/0ut/qFrKdyvfSPDcDkUR5eBoeaeUBkMAAPL+YeIxKhQ==
            -----END AGE ENCRYPTED FILE-----
-        - recipient: age145uq9emlxqzm3wqauy9zqj78wqx9e6h09xag6wust7jjgn4upfzsaemcvx
+        - recipient: age1zujp5gxy7suv8ysnygv43cmzuvv36nxfg0ch7r3xg2emc6fz3vmqqujheq
          enc: |
            -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB4OHkvTk5JaWxLbmZ5VEtV
-            S2VkMVl0WGZOYk5WRTJISWMxU0tja0x6alFrCnJISFNTbDhNRXJjUDJDS1JmWmRK
-            aGhyaFBjNTlhanE3UGdQb0JFUWFCTWcKLS0tIDhVZ1JxcGJUcWsvWVFSWFZWYjdx
-            K2syUkFRb3F3aFFFeis3OFR4ZENielEKGrUQCi7xaPzJKypvy4tyoSG1a2/l5Le0
-            dVcheJcRJvoo89WWrciMhZ/MCs5kffI464RVW7q9BxbJRDO2Obm2dw==
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBvWlN0bWNMZTlMM3Mvdmdn
+            M2M1RzBaNUl3Qkc4Sm5QbmE3cFpuODBNakZzCk9SbjBvM25pK2pGdmRqMXd4eTJu
+            ZU8vTmtSN1RYK2RmQ01QempKUG43eHMKLS0tIHVINVgvNTluS1grSm1YSHkzalMx
+            SGM4ditJZFducVNEaDlJSkhuUnpxQzAKvvHbDuTQUpW+O/qtgjAFZlYc4iRRj4G1
+            BP/QyzuTnpP6PuAG9pJYHx164+uS2Ftog/QnCFD0YAJdJtxaoUHzOw==
            -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2024-09-13T09:10:11Z"
-    mac: ENC[AES256_GCM,data:GTzDXeEzRFmrX0PU0GKPF5JwscZUrzUmB90ThHPZ7oqflOPpZBrotOo4MZCcU37HEPAXVeFUzVnsjN5bOp5RFqs70r9upj2jXiIsbx/yskcPOML3GAFmVc9HbjOK9TLyie2bJWaFhT+b7CgiJvyIu0QEh43dqSI4d3H1T8Hqn1o=,iv:kcV3Xz276+PKrztSIDB2SiJjDV2iqCn2A90AjEO326M=,tag:3xu3sQeRB15Os06i484GFw==,type:str]
-    pgp: []
+    lastmodified: "2025-07-09T19:44:56Z"
+    mac: ENC[AES256_GCM,data:1sXY3aEfbsit5hGBdE7x0pbdSLnW67NRNNDTEjS1fI85TaPpMmcgrxxvEDsg1A6psRMdBwFMUIVHH/rf4rkZ9tXSmHZBFTZrTQGn09bPF9yNC0MnJXKkcNcQiQJveg986LMWFwT/WE8PWbeDh7o+ASJF+IgT+5ikq8DMBgoyK/E=,iv:Ssy66et65Oq2WwbF12ubLGk87bSv/KSruf49T7v04NY=,tag:Y89PxwRFlJUBZniS2clybw==,type:str]
    unencrypted_suffix: _unencrypted
-    version: 3.9.0
+    version: 3.10.2