add kernel-check based reboot

thilobillerbeck · Jan 15, 2024 · 04ebaf6 · 04ebaf6
1 parent fbe30e8
commit 04ebaf6
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Showing 2 changed files with 15 additions and 3 deletions.
diff --git a/.github/workflows/update.yaml b/.github/workflows/update.yaml
@@ -22,8 +22,7 @@ jobs:
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - run: nix-shell --run "colmena apply -v"
-        if: ${{ github.event_name != 'schedule' }}
         name: Update machines
-      - run: nix-shell --run "colmena apply -v --reboot"
+      - run: nix-shell --run "colmena exec -v \"kernel-check-reboot\""
         if: ${{ github.event_name == 'schedule' }}
-        name: Update machines (with reboot)
+        name: Check for kenrel update and reboot
diff --git a/configs/packages-server.nix b/configs/packages-server.nix
@@ -15,5 +15,18 @@
     curl
     unzip
     ncdu
+    (pkgs.writeShellScriptBin "kernel-check-reboot" ''
+      currentKernel=$(readlink /run/current-system/kernel)
+      bootedKernel=$(readlink /run/booted-system/kernel)
+      echo "Current Kernel Path:" $currentKernel
+      echo "Booted Kernel Path:" $bootedKernel
+
+      if [[ "$currentKernel" != "$bootedKernel" ]]; then
+          echo "Kernel Versions differ. Rebooting...."
+          systemctl reboot -i
+      else
+          echo "Current kernel is booted. Skipping...."
+      fi
+    '')
   ];
 }