From 77563481b1bbabb9f279fbe7c9f2597c2d5de1df Mon Sep 17 00:00:00 2001
From: Thorsten Spille <thorstenspille@users.noreply.github.com>
Date: Thu, 8 Jul 2021 19:41:44 +0200
Subject: [PATCH] Create check_running_kernel

---
 running-kernel/check_running_kernel | 43 +++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 running-kernel/check_running_kernel

diff --git a/running-kernel/check_running_kernel b/running-kernel/check_running_kernel
new file mode 100644
index 0000000..77d6b46
--- /dev/null
+++ b/running-kernel/check_running_kernel
@@ -0,0 +1,43 @@
+#!/bin/bash
+
+# check_running_kernel
+# This plugin checks if the latest installed kernel is runnning or if the system needs to be rebooted
+
+# Author: (C)2021 Thorsten Spille <thorsten@spille-edv.de>
+
+# MIT License
+#
+# Copyright (c) 2021 Bash Club
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+
+uname=$(uname -r)
+major_version=${uname:0:3}
+if [[ "$uname" == *"-pve" ]]; then
+    filter=pve-kernel-$major_version
+else
+    filter=linux-image-$major_version
+fi
+latest_kernel=$(dpkg --get-selections | grep $filter | tail -1 | cut -f1 | cut -d'-' -f3-)
+if [[ "$latest_kernel" == "$uname" ]]; then
+    echo -e "0 \"Running Kernel\" version_ok=0;1;|running_kernel=$uname;;|latest_installed_kernel=$latest_kernel;; Currently running Kernel up-to-date - OK"
+else
+    echo -e "1 \"Running Kernel\" version_ok=1;1;|running_kernel=$uname;;|latest_installed_kernel=$latest_kernel;; Newer Kernel version installed. Please reboot machine! - WARN"
+fi