From 5c17645462604f9a548a7c6733afa91fcae8c1a9 Mon Sep 17 00:00:00 2001
From: zowoq <59103226+zowoq@users.noreply.github.com>
Date: Fri, 27 Sep 2024 17:51:27 +1000
Subject: [PATCH 1/2] add shared nix config

---
 darwin/common/nix.nix | 25 ++++---------------------
 nixos/common/nix.nix  | 25 ++++---------------------
 shared/common/nix.nix | 23 +++++++++++++++++++++++
 3 files changed, 31 insertions(+), 42 deletions(-)
 create mode 100644 shared/common/nix.nix

diff --git a/darwin/common/nix.nix b/darwin/common/nix.nix
index 0bb14a66..c2403fdf 100644
--- a/darwin/common/nix.nix
+++ b/darwin/common/nix.nix
@@ -1,20 +1,10 @@
 { lib, config, ... }:
 {
-  services.nix-daemon.enable = true;
-
-  # Fallback quickly if substituters are not available.
-  nix.settings.connect-timeout = 5;
-
-  # Enable flakes
-  nix.settings.experimental-features =
-    [
-      "nix-command"
-      "flakes"
-    ]
-    ++ lib.optional (lib.versionOlder (lib.versions.majorMinor config.nix.package.version) "2.22") "repl-flake";
+  imports = [
+    ../../shared/common/nix.nix
+  ];
 
-  # The default at 10 is rarely enough.
-  nix.settings.log-lines = lib.mkDefault 25;
+  services.nix-daemon.enable = true;
 
   # do not use nix.settings.auto-optimise-store, because of https://github.com/NixOS/nix/issues/7273
   nix.optimise.interval = lib.mkDefault [
@@ -24,12 +14,5 @@
     }
   ];
 
-  # Avoid disk full issues
-  nix.settings.max-free = lib.mkDefault (3000 * 1024 * 1024);
-  nix.settings.min-free = lib.mkDefault (512 * 1024 * 1024);
-
-  # Avoid copying unnecessary stuff over SSH
-  nix.settings.builders-use-substitutes = true;
-
   nix.daemonIOLowPriority = lib.mkDefault true;
 }
diff --git a/nixos/common/nix.nix b/nixos/common/nix.nix
index 64ff7e56..f003eb88 100644
--- a/nixos/common/nix.nix
+++ b/nixos/common/nix.nix
@@ -1,30 +1,16 @@
 { lib, config, ... }:
 {
+  imports = [
+    ../../shared/common/nix.nix
+  ];
+
   # Disable nix channels. Use flakes instead.
   nix.channel.enable = lib.mkDefault false;
 
-  # Fallback quickly if substituters are not available.
-  nix.settings.connect-timeout = lib.mkDefault 5;
-
-  # Enable flakes
-  nix.settings.experimental-features =
-    [
-      "nix-command"
-      "flakes"
-    ]
-    ++ lib.optional (lib.versionOlder (lib.versions.majorMinor config.nix.package.version) "2.22") "repl-flake";
-
-  # The default at 10 is rarely enough.
-  nix.settings.log-lines = lib.mkDefault 25;
-
   # De-duplicate store paths using hardlinks except in containers
   # where the store is host-managed.
   nix.optimise.automatic = lib.mkDefault (!config.boot.isContainer);
 
-  # Avoid disk full issues
-  nix.settings.max-free = lib.mkDefault (3000 * 1024 * 1024);
-  nix.settings.min-free = lib.mkDefault (512 * 1024 * 1024);
-
   # TODO: cargo culted.
   nix.daemonCPUSchedPolicy = lib.mkDefault "batch";
   nix.daemonIOSchedClass = lib.mkDefault "idle";
@@ -40,7 +26,4 @@
   # 100 is the default for user slices and 500 is systemd-coredumpd@
   # We rather want a build to be killed than our precious user sessions as builds can be easily restarted.
   systemd.services.nix-daemon.serviceConfig.OOMScoreAdjust = lib.mkDefault 250;
-
-  # Avoid copying unnecessary stuff over SSH
-  nix.settings.builders-use-substitutes = true;
 }
diff --git a/shared/common/nix.nix b/shared/common/nix.nix
new file mode 100644
index 00000000..f0096413
--- /dev/null
+++ b/shared/common/nix.nix
@@ -0,0 +1,23 @@
+{ lib, config, ... }:
+{
+  # Fallback quickly if substituters are not available.
+  nix.settings.connect-timeout = lib.mkDefault 5;
+
+  # Enable flakes
+  nix.settings.experimental-features =
+    [
+      "nix-command"
+      "flakes"
+    ]
+    ++ lib.optional (lib.versionOlder (lib.versions.majorMinor config.nix.package.version) "2.22") "repl-flake";
+
+  # The default at 10 is rarely enough.
+  nix.settings.log-lines = lib.mkDefault 25;
+
+  # Avoid disk full issues
+  nix.settings.max-free = lib.mkDefault (3000 * 1024 * 1024);
+  nix.settings.min-free = lib.mkDefault (512 * 1024 * 1024);
+
+  # Avoid copying unnecessary stuff over SSH
+  nix.settings.builders-use-substitutes = true;
+}

From 5293526ad15c2df54926269fce357ddd657db1f8 Mon Sep 17 00:00:00 2001
From: zowoq <59103226+zowoq@users.noreply.github.com>
Date: Fri, 27 Sep 2024 17:51:48 +1000
Subject: [PATCH 2/2] add shared telegraf config

---
 darwin/mixins/telegraf.nix | 16 ++++------------
 nixos/mixins/telegraf.nix  | 33 +++------------------------------
 shared/mixins/telegraf.nix | 38 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 45 insertions(+), 42 deletions(-)
 create mode 100644 shared/mixins/telegraf.nix

diff --git a/darwin/mixins/telegraf.nix b/darwin/mixins/telegraf.nix
index bb075da7..ca3fbf45 100644
--- a/darwin/mixins/telegraf.nix
+++ b/darwin/mixins/telegraf.nix
@@ -5,22 +5,14 @@
   ...
 }:
 {
+  imports = [
+    ../../shared/mixins/telegraf.nix
+  ];
+
   services.telegraf = {
-    enable = true;
     extraConfig = {
-      agent.interval = "60s";
       inputs = {
         smart.path_smartctl = "${pkgs.smartmontools}/bin/smartctl";
-        system = { };
-        mem = { };
-        swap = { };
-        disk.tagdrop.fstype = [ "ramfs" ];
-        diskio = { };
-        internal = { };
-      };
-      outputs.prometheus_client = {
-        listen = ":9273";
-        metric_version = 2;
       };
     };
   };
diff --git a/nixos/mixins/telegraf.nix b/nixos/mixins/telegraf.nix
index 2eff3924..c4c32306 100644
--- a/nixos/mixins/telegraf.nix
+++ b/nixos/mixins/telegraf.nix
@@ -89,13 +89,14 @@ let
 
 in
 {
+  imports = [
+    ../../shared/mixins/telegraf.nix
+  ];
 
   systemd.services.telegraf.path = lib.optional (!isVM && hasNvme) pkgs.nvme-cli;
 
   services.telegraf = {
-    enable = true;
     extraConfig = {
-      agent.interval = "60s";
       inputs = {
         prometheus = lib.mkIf config.services.promtail.enable [
           {
@@ -106,8 +107,6 @@ in
         kernel_vmstat = { };
         nginx.urls = lib.mkIf config.services.nginx.statusPage [ "http://localhost/nginx_status" ];
         smart = lib.mkIf (!isVM) { path_smartctl = "/run/wrappers/bin/smartctl-telegraf"; };
-        system = { };
-        mem = { };
         file =
           [
             {
@@ -129,36 +128,10 @@ in
           }
         ];
         systemd_units = { };
-        swap = { };
-        disk.tagdrop = {
-          fstype = [
-            "tmpfs"
-            "ramfs"
-            "devtmpfs"
-            "devfs"
-            "iso9660"
-            "overlay"
-            "aufs"
-            "squashfs"
-            "efivarfs"
-          ];
-          device = [
-            "rpc_pipefs"
-            "lxcfs"
-            "nsfs"
-            "borgfs"
-          ];
-        };
-        diskio = { };
-        internal = { };
         zfs = {
           poolMetrics = true;
         };
       } // lib.optionalAttrs config.boot.swraid.enable { mdstat = { }; };
-      outputs.prometheus_client = {
-        listen = ":9273";
-        metric_version = 2;
-      };
     };
   };
   security.wrappers.smartctl-telegraf = lib.mkIf (!isVM) {
diff --git a/shared/mixins/telegraf.nix b/shared/mixins/telegraf.nix
new file mode 100644
index 00000000..7af0e20f
--- /dev/null
+++ b/shared/mixins/telegraf.nix
@@ -0,0 +1,38 @@
+{
+  services.telegraf = {
+    enable = true;
+    extraConfig = {
+      agent.interval = "60s";
+      inputs = {
+        system = { };
+        mem = { };
+        swap = { };
+        disk.tagdrop = {
+          fstype = [
+            "tmpfs"
+            "ramfs"
+            "devtmpfs"
+            "devfs"
+            "iso9660"
+            "overlay"
+            "aufs"
+            "squashfs"
+            "efivarfs"
+          ];
+          device = [
+            "rpc_pipefs"
+            "lxcfs"
+            "nsfs"
+            "borgfs"
+          ];
+        };
+        diskio = { };
+        internal = { };
+      };
+      outputs.prometheus_client = {
+        listen = ":9273";
+        metric_version = 2;
+      };
+    };
+  };
+}