From 3cd8b9ea5781c1faf50d2c81fd0cac6bf7084991 Mon Sep 17 00:00:00 2001
From: Sridhar Ratnakumar <srid@srid.ca>
Date: Fri, 17 Sep 2021 14:42:50 -0400
Subject: [PATCH] add new ryzen9

---
 hosts/ryzen9.nix | 129 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 hosts/ryzen9.nix

diff --git a/hosts/ryzen9.nix b/hosts/ryzen9.nix
new file mode 100644
index 0000000..c276de0
--- /dev/null
+++ b/hosts/ryzen9.nix
@@ -0,0 +1,129 @@
+{ config, pkgs, lib, modulesPath, ... }:
+
+{
+  imports =
+    [
+      (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "nvme" "ahci" ];
+  boot.initrd.kernelModules = [ "dm-snapshot" ];
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    {
+      device = "/dev/disk/by-uuid/5563081e-40b4-4295-99a0-b1c099d03b8f";
+      fsType = "ext4";
+    };
+
+  swapDevices = [ ];
+
+  nix.maxJobs = lib.mkDefault 32;
+  powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
+
+  # Use GRUB2 as the boot loader.
+  # We don't use systemd-boot because Hetzner uses BIOS legacy boot.
+  boot.loader.systemd-boot.enable = false;
+  boot.loader.grub = {
+    enable = true;
+    efiSupport = false;
+    devices = [ "/dev/nvme0n1" "/dev/nvme1n1" ];
+  };
+
+  # The madm RAID was created with a certain hostname, which madm will consider
+  # the "home hostname". Changing the system hostname will result in the array
+  # being considered "foregin" as opposed to "local", and showing it as
+  # '/dev/md/<hostname>:root0' instead of '/dev/md/root0'.
+
+  # This is mdadm's protection against accidentally putting a RAID disk
+  # into the wrong machine and corrupting data by accidental sync, see
+  # https://bugzilla.redhat.com/show_bug.cgi?id=606481#c14 and onward.
+  # We set the HOMEHOST manually go get the short '/dev/md' names,
+  # and so that things look and are configured the same on all such
+  # machines irrespective of host names.
+  # We do not worry about plugging disks into the wrong machine because
+  # we will never exchange disks between machines.
+  environment.etc."mdadm.conf".text = ''
+    HOMEHOST ryzen9
+  '';
+
+  # The RAIDs are assembled in stage1, so we need to make the config
+  # available there.
+  boot.initrd.mdadmConf = config.environment.etc."mdadm.conf".text;
+
+  # Network (Hetzner uses static IP assignments, and we don't use DHCP here)
+  networking.useDHCP = false;
+
+  networking.interfaces."enp35s0" = {
+    ipv4 = {
+      addresses = [{
+        # Server main IPv4 address
+        address = "162.55.89.216";
+        prefixLength = 24;
+      }];
+
+      routes = [
+        # Default IPv4 gateway route
+        {
+          address = "0.0.0.0";
+          prefixLength = 0;
+          via = "162.55.89.193";
+        }
+      ];
+    };
+
+    ipv6 = {
+      addresses = [{
+        address = "2a01:4f8:271:1967::1";
+        prefixLength = 64;
+      }];
+
+      # Default IPv6 route
+      routes = [{
+        address = "::";
+        prefixLength = 0;
+        via = "fe80::1";
+      }];
+    };
+  };
+
+  networking = {
+    nameservers = [ "8.8.8.8" "8.8.4.4" ];
+    hostName = "ryzen9";
+  };
+
+  nixpkgs.config.allowUnfree = true;
+  nix = {
+    package = pkgs.nixUnstable;
+    extraOptions = ''
+      experimental-features = nix-command flakes
+    '';
+    trustedUsers = [ "root" "srid" ];
+  };
+
+  services.netdata.enable = true;
+
+  programs = {
+    mosh.enable = true;
+  };
+
+  environment.systemPackages = with pkgs; [
+    cryptsetup
+  ];
+
+  # Define a user account. Don't forget to set a password with ‘passwd’.
+  users.users.srid = {
+    isNormalUser = true;
+    extraGroups = [ "wheel" ];
+  };
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "20.03"; # Did you read the comment?
+
+}