From 77b8a36fac5bdc8226e183d0d712cb9af3bd932f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Wed, 19 Jul 2023 15:45:37 +0200
Subject: [PATCH 1/4] limit to 4Ghz

---
 modules/hetzner-ex101.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/modules/hetzner-ex101.nix b/modules/hetzner-ex101.nix
index 1021dee..9d19c5e 100644
--- a/modules/hetzner-ex101.nix
+++ b/modules/hetzner-ex101.nix
@@ -11,7 +11,7 @@
 
   # looks like the Intel i9-13900 draws too much power and crashes the system
   systemd.services.limit-cpu-freq = {
-    description = "Limit CPU frequency to 4.2GHz";
+    description = "Limit CPU frequency to 4GHz";
     wantedBy = [ "multi-user.target" ];
     after = [ "systemd-modules-load.service" ];
     # Some cores do have a scaling max freq less than 5GHz, so we need to
@@ -20,8 +20,8 @@
       #!/bin/sh
       for f in /sys/devices/system/cpu/cpu*/cpufreq/scaling_max_freq; do
         old_val="$(<"$f")"
-        if [[ "$old_val" -gt 4200000 ]]; then
-          echo 4200000 > "$f"
+        if [[ "$old_val" -gt 4000000 ]]; then
+          echo 4000000 > "$f"
         fi
       done
     '';

From 40899b46304603b4389ae927206af0c4bf2c834b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Wed, 19 Jul 2023 15:45:49 +0200
Subject: [PATCH 2/4] add telegraf to all hosts

---
 modules/flake-module.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/modules/flake-module.nix b/modules/flake-module.nix
index 542cc94..c16d15d 100644
--- a/modules/flake-module.nix
+++ b/modules/flake-module.nix
@@ -2,6 +2,7 @@
   flake.nixosModules = {
     server.imports = [
       inputs.srvos.nixosModules.server
+      inputs.srvos.nixosModules.mixins-telegraf
       inputs.sops-nix.nixosModules.default
     ];
 

From 4a0b6cf7850ec9e54bcb6fe2f6750fc054a898c2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Wed, 19 Jul 2023 16:37:41 +0200
Subject: [PATCH 3/4] found a better workaround to avoid crashes on web01

---
 modules/hetzner-ex101.nix | 21 +--------------------
 1 file changed, 1 insertion(+), 20 deletions(-)

diff --git a/modules/hetzner-ex101.nix b/modules/hetzner-ex101.nix
index 9d19c5e..436a824 100644
--- a/modules/hetzner-ex101.nix
+++ b/modules/hetzner-ex101.nix
@@ -9,24 +9,5 @@
   # We are not limited by zfs, so we can use the latest kernel
   boot.kernelPackages = pkgs.linuxPackages_latest;
 
-  # looks like the Intel i9-13900 draws too much power and crashes the system
-  systemd.services.limit-cpu-freq = {
-    description = "Limit CPU frequency to 4GHz";
-    wantedBy = [ "multi-user.target" ];
-    after = [ "systemd-modules-load.service" ];
-    # Some cores do have a scaling max freq less than 5GHz, so we need to
-    # check for that or else all cores will run at 800MHz
-    script = ''
-      #!/bin/sh
-      for f in /sys/devices/system/cpu/cpu*/cpufreq/scaling_max_freq; do
-        old_val="$(<"$f")"
-        if [[ "$old_val" -gt 4000000 ]]; then
-          echo 4000000 > "$f"
-        fi
-      done
-    '';
-    serviceConfig = {
-      Type = "oneshot";
-    };
-  };
+  powerManagement.cpuFreqGovernor = "powersave";
 }

From dfdd854564b60f84d14d5a9f2620b3904cb21b36 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Thu, 20 Jul 2023 09:19:05 +0200
Subject: [PATCH 4/4] add script to reboot machine

---
 targets/web01/reboot.sh | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100755 targets/web01/reboot.sh

diff --git a/targets/web01/reboot.sh b/targets/web01/reboot.sh
new file mode 100755
index 0000000..c29b677
--- /dev/null
+++ b/targets/web01/reboot.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+
+HOST=clan.lol
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+ssh "root@$HOST" reboot
+# wait till shutdown
+while ping -4 -W 1 -c 1 "$HOST"; do
+  sleep 1
+done
+
+"$SCRIPT_DIR/decrypt.sh"