bifrost: nixos on digitalocean 👌

.sops.yaml

@@ -6,6 +6,7 @@ keys:
   - &host_rico2 age19uy6xerll6st3s3ftfpy7075m9eetm2288l2w07k7ek6z2l3ef6qfw34cf
   - &host_wynne age1jyaf9rn5d5pqjh60shs2q5hs98fwugak8z6cs6qs7yuc3wntugmsumxmv0
   - &host_layne age1k2wpm88wms6hx3ldvu0n2je7pag9fexs9eq0e8hlkfcs2dx9eg9qlkf95d
+  - &host_bifrost age1jt8uleg4auf0h8ftl4ykq73epvgqml29q8ty0lz6kasta5h6td3shgxvrr
 creation_rules:
   - path_regex: secrets.yaml
     key_groups:
@@ -17,3 +18,4 @@ creation_rules:
       - *host_rico2
       - *host_wynne
       - *host_layne
+      - *host_bifrost

flake.nix

@@ -201,6 +201,28 @@
               ./hosts/layne
             ];
           };
+        Bifrost =
+          let
+            hostname = "Bifrost";
+            system = "x86_64-linux";
+            username = "adtya";
+          in
+          nixpkgs.lib.nixosSystem {
+            inherit system;
+            pkgs = packages system;
+            specialArgs = { inherit inputs username; };
+            modules = [
+              {
+                system.configurationRevision = lib.mkIf (self ? rev) self.rev;
+                networking.hostName = lib.mkForce hostname;
+                nixpkgs.hostPlatform = lib.mkDefault system;
+              }
+              sops-nix.nixosModules.sops
+              self.nixosModules.default
+              ./common
+              ./hosts/bifrost
+            ];
+          };
       };
 
       deploy.nodes = {
@@ -244,6 +266,14 @@
             path = deploy-rs.lib.x86_64-linux.activate.nixos self.nixosConfigurations.Layne;
           };
         };
+        Bifrost = {
+          hostname = "Biforst";
+          sshUser = "adtya";
+          profiles.system = {
+            user = "root";
+            path = deploy-rs.lib.x86_64-linux.activate.nixos self.nixosConfigurations.Bifrost;
+          };
+        };
       };
     }
     // flake-utils.lib.eachDefaultSystem (system:
@@ -264,6 +294,7 @@
         ];
       };
       packages.getpaper = pkgs.callPackage ./extra-packages/scripts/getpaper { };
+      packages.digitalOceanImage = (pkgs.nixos { imports = [ "${nixpkgs}/nixos/modules/virtualisation/digital-ocean-image.nix" ]; system.stateVersion = "24.11"; }).digitalOceanImage;
     }
     );
 }

hosts/bifrost/default.nix

@@ -0,0 +1,40 @@
+{ modulesPath, ... }: {
+  imports = [
+    (modulesPath + "/virtualisation/digital-ocean-config.nix")
+    ./network.nix
+    ./programs
+    ./services
+    ./security.nix
+  ];
+
+  nodeconfig = {
+    minimize = true;
+    nix.auto-gc = true;
+  };
+
+  i18n = {
+    defaultLocale = "en_US.UTF-8";
+    extraLocaleSettings = {
+      LC_ADDRESS = "en_US.UTF-8";
+      LC_IDENTIFICATION = "en_US.UTF-8";
+      LC_MEASUREMENT = "en_US.UTF-8";
+      LC_MONETARY = "en_US.UTF-8";
+      LC_NAME = "en_US.UTF-8";
+      LC_NUMERIC = "en_US.UTF-8";
+      LC_PAPER = "en_US.UTF-8";
+      LC_TELEPHONE = "en_US.UTF-8";
+      LC_TIME = "en_US.UTF-8";
+      LC_ALL = "en_US.UTF-8";
+    };
+    supportedLocales = [ "en_US.UTF-8/UTF-8" ];
+  };
+
+  time.timeZone = "Asia/Kolkata";
+  system = {
+    switch = {
+      enable = false;
+      enableNg = true;
+    };
+    stateVersion = "24.11";
+  };
+}

hosts/bifrost/network.nix

@@ -0,0 +1,12 @@
+{ lib, ... }: {
+  imports = [
+    ../shared/network.nix
+    ../shared/networkd.nix
+  ];
+  networking = {
+    nameservers = lib.mkForce [
+      "1.1.1.1"
+      "1.0.0.1"
+    ];
+  };
+}

hosts/bifrost/programs/default.nix

@@ -0,0 +1,16 @@
+{ pkgs, ... }: {
+  imports = [
+    ./neovim.nix
+    ./starship.nix
+    ./zsh.nix
+  ];
+
+  programs = {
+    git.enable = true;
+  };
+
+  environment.systemPackages = with pkgs; [
+    sops
+    age
+  ];
+}

hosts/bifrost/programs/neovim.nix

@@ -0,0 +1,8 @@
+_: {
+  programs.neovim = {
+    enable = true;
+    defaultEditor = true;
+    viAlias = true;
+    vimAlias = true;
+  };
+}

hosts/bifrost/programs/starship.nix

@@ -0,0 +1,8 @@
+_: {
+  programs.starship = {
+    enable = true;
+    settings = {
+      add_newline = false;
+    };
+  };
+}

hosts/bifrost/programs/zsh.nix

@@ -0,0 +1,10 @@
+_: {
+  programs = {
+    zsh = {
+      enable = true;
+      autosuggestions.enable = true;
+      syntaxHighlighting.enable = true;
+    };
+  };
+  environment.pathsToLink = [ "/share/zsh" ];
+}

hosts/bifrost/security.nix

@@ -0,0 +1,9 @@
+_: {
+  security = {
+    sudo = {
+      wheelNeedsPassword = false;
+    };
+    polkit.enable = true;
+  };
+}
+

hosts/bifrost/services/default.nix

@@ -0,0 +1,5 @@
+_: {
+  imports = [
+    ./ssh.nix
+  ];
+}

hosts/bifrost/services/ssh.nix

@@ -0,0 +1,21 @@
+_: {
+  services.openssh = {
+    enable = true;
+    settings = {
+      KbdInteractiveAuthentication = false;
+      PasswordAuthentication = false;
+      PermitRootLogin = "no";
+    };
+    hostKeys = [
+      {
+        path = "/persist/secrets/ssh/keys/ssh_host_ed25519_key";
+        type = "ed25519";
+      }
+      {
+        path = "/persist/secrets/ssh/keys/ssh_host_rsa_key";
+        type = "rsa";
+        bits = "4096";
+      }
+    ];
+  };
+}

hosts/shared/networkd.nix

@@ -1,4 +1,4 @@
-_: {
+{ lib, config, ... }: {
   networking = {
     useNetworkd = true;
   };
@@ -26,7 +26,7 @@ _: {
           linkConfig = {
             RequiredForOnline = "yes";
           };
-          routes = [
+          routes = lib.mkIf ((lib.strings.toLower config.networking.hostName) != "bifrost") [
             {
               Destination = "165.232.180.97";
               Gateway = "_dhcp4";

secrets.yaml

@@ -37,65 +37,74 @@ sops:
         - recipient: age1w5rvr4nl8xvjjxpct4e2a2eajvm79v4r9nyxrcn40fm8d7h9l9cqkk0jtt
           enc: |
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+            uxNQZoSYENIPESR7ydO7642r8xjLdQdfMEjKz/rnooCgB1Zy7X7kGw==
             -----END AGE ENCRYPTED FILE-----
         - recipient: age1mhks8qmhjrtc2u5ufvp3pv2hn7tkadvmscnp7wd0ywmnse0szctqsnpy0a
           enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSA4WEl5MDNuY2VvRTh5eU5N
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             -----END AGE ENCRYPTED FILE-----
         - recipient: age106k9u5ns9h7smh3gqc40k9fft5emknvq669qdv8a29ak3ah4j38s5ng2gt
           enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSA1QnlsNk03OFpEUzgzNVRD
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             -----END AGE ENCRYPTED FILE-----
         - recipient: age1829x4l8vdhcn97af0zq898tupll0smrqywxka4pswkt6mtn8qp7qqnnnl4
           enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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             -----END AGE ENCRYPTED FILE-----
         - recipient: age19uy6xerll6st3s3ftfpy7075m9eetm2288l2w07k7ek6z2l3ef6qfw34cf
           enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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             -----END AGE ENCRYPTED FILE-----
         - recipient: age1jyaf9rn5d5pqjh60shs2q5hs98fwugak8z6cs6qs7yuc3wntugmsumxmv0
           enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
-            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBYV2NNOFAvOWlESGJRN29w
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             -----END AGE ENCRYPTED FILE-----
         - recipient: age1k2wpm88wms6hx3ldvu0n2je7pag9fexs9eq0e8hlkfcs2dx9eg9qlkf95d
           enc: |
             -----BEGIN AGE ENCRYPTED FILE-----
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+            -----END AGE ENCRYPTED FILE-----
+        - recipient: age1jt8uleg4auf0h8ftl4ykq73epvgqml29q8ty0lz6kasta5h6td3shgxvrr
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
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             -----END AGE ENCRYPTED FILE-----
     lastmodified: "2024-10-31T05:28:50Z"
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