From: Peter Palfrader <peter@palfrader.org>
Date: Mon, 5 May 2008 17:12:46 +0000 (+0000)
Subject: [project @ peter@palfrader.org-20080505171246-ny9adauh38g8izbk]
X-Git-Url: https://git.adam-barratt.org.uk/?a=commitdiff_plain;h=f348589eb139fd7ebf6b67d2da48a7670b979ac1;hp=7c5bbaea78439d10c033f0751680e59d1bb98c7d;p=mirror%2Fdsa-nagios.git

[project @ peter@palfrader.org-20080505171246-ny9adauh38g8izbk]
Add dsa-check-running-kernel
---

diff --git a/dsa-nagios-nrpe-config/debian/changelog b/dsa-nagios-nrpe-config/debian/changelog
index c089d2c..696623a 100644
--- a/dsa-nagios-nrpe-config/debian/changelog
+++ b/dsa-nagios-nrpe-config/debian/changelog
@@ -1,3 +1,9 @@
+dsa-nagios-nrpe-config (36) unstable; urgency=low
+
+  * Add dsa-check-running-kernel
+
+ -- Peter Palfrader <weasel@debian.org>  Mon,  5 May 2008 17:11:54 +0000
+
 dsa-nagios-nrpe-config (35) unstable; urgency=low
 
   * dsa-check-raid-mpt
diff --git a/dsa-nagios-nrpe-config/debian/copyright b/dsa-nagios-nrpe-config/debian/copyright
index 59e2523..db7930c 100644
--- a/dsa-nagios-nrpe-config/debian/copyright
+++ b/dsa-nagios-nrpe-config/debian/copyright
@@ -19,6 +19,11 @@ dsa-check-dabackup:
   License: MIT
 
 ########################################################################
-dsa-check-raid-3ware
+dsa-check-raid-3ware:
   Copyright: 2006 Peter Palfrader
   License: MIT
+
+########################################################################
+dsa-check-running-kernel:
+  Copyright: 2008 Peter Palfrader
+  License: MIT
diff --git a/dsa-nagios-nrpe-config/debian/rules b/dsa-nagios-nrpe-config/debian/rules
index df8c8b0..dcd7b8c 100755
--- a/dsa-nagios-nrpe-config/debian/rules
+++ b/dsa-nagios-nrpe-config/debian/rules
@@ -18,6 +18,7 @@ install:
 	install -m 755 dsa-check-raid-mpt $(CURDIR)/debian/dsa-nagios-nrpe-config/usr/lib/nagios/plugins
 	install -m 755 dsa-check-raid-sw $(CURDIR)/debian/dsa-nagios-nrpe-config/usr/lib/nagios/plugins
 	install -m 755 dsa-check-raid-3ware $(CURDIR)/debian/dsa-nagios-nrpe-config/usr/lib/nagios/plugins
+	install -m 755 dsa-check-running-kernel $(CURDIR)/debian/dsa-nagios-nrpe-config/usr/lib/nagios/plugins
 	install -m 755 dsa-check-da-in-aliases $(CURDIR)/debian/dsa-nagios-nrpe-config/usr/lib/nagios/plugins
 	install -m 755 dsa-check-dabackup $(CURDIR)/debian/dsa-nagios-nrpe-config/usr/lib/nagios/plugins
 	install -m 755 dsa-check-udldap-freshness $(CURDIR)/debian/dsa-nagios-nrpe-config/usr/lib/nagios/plugins
diff --git a/dsa-nagios-nrpe-config/dsa-check-running-kernel b/dsa-nagios-nrpe-config/dsa-check-running-kernel
new file mode 100755
index 0000000..7d2cb3a
--- /dev/null
+++ b/dsa-nagios-nrpe-config/dsa-check-running-kernel
@@ -0,0 +1,95 @@
+#!/bin/bash
+
+# Check if the running kernel has the same version string as the on-disk
+# kernel image.
+
+# Copyright 2008 Peter Palfrader
+#
+# 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.
+
+OK=0;
+WARNING=1;
+CRITICAL=2;
+UNKNOWN=3;
+
+get_offset() {
+	local file needle
+
+	file="$1"
+	needle="$2"
+	perl -e '
+		undef $/;
+		$i = index(<>, "'"$needle"'");
+		if ($i < 0) {
+			exit 1;
+		};
+		print $i,"\n"' < "$file"
+}
+
+get_image() {
+	local image GZHDR1 GZHDR2 off
+
+	image="$1"
+
+	GZHDR1="\x1f\x8b\x08\x00"
+	GZHDR2="\x1f\x8b\x08\x08"
+
+	off=`get_offset "$image" $GZHDR1`
+	[ "$?" != "0" ] && off="-1"
+	if [ "$off" -eq "-1" ]; then
+		off=`get_offset "$image" $GZHDR2`
+		[ "$?" != "0" ] && off="-1"
+	fi
+	if [ "$off" -eq "0" ]; then
+		zcat < "$image"
+	elif [ "$off" -ne "-1" ]; then
+		(dd ibs="$off" skip=1 count=0 && dd bs=512k) < "$image"  2>/dev/null | zcat 2>/dev/null
+	fi
+
+	echo "ERROR: Unable to extract kernel image." 2>&1
+	exit 1
+}
+
+on_disk="/boot/vmlinuz-`uname -r`"
+
+if ! [ -e "$on_disk" ] ; then
+	echo "WARNING: $on_disk does not exist - I have no idea which kernel I am running"
+	exit $WARN
+fi
+
+on_disk_version="`get_image $on_disk | strings | grep 'Linux version' | head -n1`"
+if [ -z "$on_disk_version" ] ; then
+	echo "UNKNOWN: Failed to get a version string from image $on_disk"
+	exit $UNKNOWN
+fi
+
+running_version="`cat /proc/version`"
+if [ -z "$running_version" ] ; then
+	echo "UNKNOWN: Failed to get a version string from running system"
+	exit $UNKNOWN
+fi
+
+if [ "$running_version" != "$on_disk_version" ]; then
+	echo "WARNING: Running kernel does not match on-disk kernel image: [$running_version != $on_disk_version]"
+	exit $WARNING
+else
+	echo "OK: Running kernel matches on disk image: [$running_version]"
+	exit $OK
+fi