diff options
Diffstat (limited to 'usr-lib-nagios-plugins/check_needs-rebooting.sh')
| -rwxr-xr-x | usr-lib-nagios-plugins/check_needs-rebooting.sh | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/usr-lib-nagios-plugins/check_needs-rebooting.sh b/usr-lib-nagios-plugins/check_needs-rebooting.sh new file mode 100755 index 0000000..48c25ba --- /dev/null +++ b/usr-lib-nagios-plugins/check_needs-rebooting.sh @@ -0,0 +1,260 @@ +#!/bin/bash + +#set -x + +# License: The BSD 3-Clause License +# +# Copyright (c) 2014, Johan Ryberg +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are met: +# +# 1. Redistributions of source code must retain the above copyright notice, +# this list of conditions and the following disclaimer. +# +# 2. Redistributions in binary form must reproduce the above copyright notice, +# this list of conditions and the following disclaimer in the documentation +# and/or other materials provided with the distribution. +# +# 3. Neither the name of the copyright holder nor the names of its contributors +# may be used to endorse or promote products derived from this software without +# specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE +# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +# check_reboot-required +# Plugin for NRPE (Nagios Remote Plugin Executor) for +# Debian/Ubuntu/RedHat/CentOS to check if a reboot are required and +# also list packages that requires reboot +# Web: https://github.com/jryberg/nagios-plugins/ + +APPNAME=`basename $0` +VERSION="1.0" + +# Defining standard messages and exit error levels +# https://nagios-plugins.org/doc/guidelines.html +OK_EXIT_CODE=0 +WARNING_EXIT_CODE=1 +CRITICAL_EXIT_CODE=2 +UNKNOWN_EXIT_CODE=3 +OK_MSG="OK" +WARNING_MSG="Warning" +CRITICAL_MSG="Critical" +UNKNOWN_MSG="Unknown" + +# Using Unknown as default +EXIT_CODE=$UNKNOWN_EXIT_CODE +EXIT_MSG=$UNKNOWN_MSG + +# Stupid warning and critical levels, this cannot be determined by numbers +# some may want to have this anyway. Default will be a warning if a reboot +# are required and never critical +# -1 = disable service status +WARNING_LEVEL=1 +CRITICAL_LEVEL=-1 + +# Path to reboot-required +REBOOT_REQUIRED_PATH="/var/run/reboot-required" +REBOOT_REQUIRED_PKGS_PATH="/var/run/reboot-required.pkgs" + +# Function to explain how to use the program +function_usage () { +cat - <<EOF +Usage: ${appname} [--help] +Usage: ${appname} -d status [-w warn] [-c crit] + +This check command checks if a reboot are required after an upgrade. It will +also list packages that requires a reboot to ease the decision for the +sysadmin if/when a reboot needs to be carried out. + +WARNING: It's impossible by numbers to decide if a reboot are required by +raising a "warning" or "critical" event. A patch for 0-day vulnerability +will probably required immediate attention and less important updates can +wait until next scheduled maintenance window. Please read documentation +for each update. + +Default without any options will be Warning for 1 or more packages +that requires reboot. Critical event will not be raised. + + --help + Show this help + -V, --version + Show version + -s + Default service status when reboot are needed but package information + are missing. w=Warning, c=Critical + -w + Warning: Number of packages needing reboot as integer. Default: 1 + -c + Critical: Number of packages needing reboot as integer. Disabled as default + +Example: +${APPNAME} -s w + +EOF +} + +function distro_name() { + if [[ -e /etc/redhat-release ]]; then + REDHAT_RELEASE=`cat /etc/redhat-release` + if [[ `cat /etc/redhat-release | grep CentOS` != "" ]]; then + echo "CentOS" + elif [[ `cat /etc/redhat-release | grep "Red Hat"` != "" ]]; then + echo "Red Hat" + else + echo "$REDHAT_RELEASE" + fi + elif [[ -e /etc/lsb-release ]]; then + . /etc/lsb-release + echo $DISTRIB_ID + elif [[ -e /etc/debian_version ]]; then + DEBIAN_VER=`cat /etc/debian_version` + echo "Debian" + else + echo "OS not recognized" + fi +} + +function CheckDebianRebootRequired() { + if [ ! -f ${REBOOT_REQUIRED_PATH} ]; then + # Reboot not required + EXIT_MSG=$OK_MSG + EXIT_MSG_BODY="No reboot required|Packages=0;${WARNING_LEVEL//-1/};${CRITICAL_LEVEL//-1/};0" + EXIT_MSG_NR_PACKAGES=0 + EXIT_CODE=$OK_EXIT_CODE + else + # Reboot required + NR_OF_PACKAGES=0 + if [ -f ${REBOOT_REQUIRED_PKGS_PATH} ]; then + NR_OF_PACKAGES=`wc -l ${REBOOT_REQUIRED_PKGS_PATH} | awk '{ print $1 }'` + fi + if [ ${NR_OF_PACKAGES} -gt 0 ]; then + if [ ${NR_OF_PACKAGES} -ge ${CRITICAL_LEVEL} ] && [ ${CRITICAL_LEVEL} -ne "-1" ];then + EXIT_MSG=$CRITICAL_MSG + EXIT_CODE=$CRITICAL_EXIT_CODE + elif [ ${NR_OF_PACKAGES} -ge ${WARNING_LEVEL} ] && [ ${WARNING_LEVEL} -ne "-1" ];then + EXIT_MSG=$WARNING_MSG + EXIT_CODE=$WARNING_EXIT_CODE + else + EXIT_MSG=$OK_MSG + EXIT_CODE=$OK_EXIT_CODE + fi + EXIT_MSG_BODY="`cat ${REBOOT_REQUIRED_PATH}`<br/>Packages:<br/>`cat ${REBOOT_REQUIRED_PKGS_PATH} | sed ':a;N;$!ba;s/\n/<br\/>/g'`|Packages=${NR_OF_PACKAGES};${WARNING_LEVEL//-1/};${CRITICAL_LEVEL//-1/};0" + else + if [[ ${STATUS} = "w" ]]; then + EXIT_MSG=$WARNING_MSG + EXIT_CODE=$WARNING_EXIT_CODE + else + EXIT_MSG=$CRITICAL_MSG + EXIT_CODE=$CRITICAL_EXIT_CODE + fi + EXIT_MSG_BODY="`cat ${REBOOT_REQUIRED_PATH}`|Packages=U;${WARNING_LEVEL//-1/};${CRITICAL_LEVEL//-1/};0" + fi + fi +} + +function CheckRedHatRebootRequired() { + LAST_KERNEL=`/bin/rpm -q --last kernel | /usr/bin/head -1 | /usr/bin/perl -pe 's/^kernel-(\S+).*/$1/'` + RUNNING_KERNEL=`uname -r` + + if [[ $LAST_KERNEL != $RUNNING_KERNEL ]]; then + EXIT_MSG=$CRITICAL_MSG + EXIT_MSG_BODY="Reboot required, the running kernel ($RUNNING_KERNEL) is different from the last kernel installed ($LAST_KERNEL)." + EXIT_MSG_NR_PACKAGES=1 + EXIT_CODE=$CRITICAL_EXIT_CODE + else + EXIT_MSG=$OK_MSG + EXIT_MSG_BODY="No reboot required|Packages=0;${WARNING_LEVEL//-1/};${CRITICAL_LEVEL//-1/};0" + EXIT_MSG_NR_PACKAGES=0 + EXIT_CODE=$OK_EXIT_CODE + fi +} +# Process arguments +while [ $# -gt 0 ]; do + OPT="$1" + case "${OPT}" in + --help) + function_usage + exit $OK_EXIT_CODE + ;; + -s) + shift + case $1 in + w|c) + STATUS="${1}" + ;; + *) + echo "${APPNAME}: Service status must be w (Warning) or c (Critical)" + exit $UNKNOWN_EXIT_CODE + ;; + esac + shift + ;; + -w) + shift + if [[ ${1} =~ ^[0-9]+$ ]]; then + WARNING_LEVEL="${1}" + else + echo "${APPNAME}: Warning level must be positive integer" + exit $UNKNOWN_EXIT_CODE + fi + shift + ;; + -c) + shift + if [[ ${1} =~ ^[0-9]+$ ]]; then + CRITICAL_LEVEL="${1}" + else + echo "${APPNAME}: Critical level must be positive integer" + exit $UNKNOWN_EXIT_CODE + fi + shift + ;; + --version|-V) + echo "${APPNAME} ${VERSION}" + exit $OK_EXIT_CODE + ;; + *) + echo "${APPNAME}: invalid option '${1}'" + echo "Try '${APPNAME} --help' for more information." + exit $UNKNOWN_EXIT_CODE + ;; + esac +done + +if [ -z ${STATUS} ]; then + echo "${APPNAME}: -s Status argument are missing" + exit $UNKNOWN_EXIT_CODE +fi + +case `distro_name` in + "OS not recognized") + echo "OS wasn't recognized, please report to maintainer of this script." + exit $UNKNOWN_EXIT_CODE + ;; + "Debian"|"Ubuntu") + CheckDebianRebootRequired + ;; + "Red Hat"|"CentOS") + CheckRedHatRebootRequired + ;; + *) + echo "OS wasn't recognized, please report to maintainer of this script." + exit $UNKNOWN_EXIT_CODE + ;; +esac + +# Echo message and exit +echo "${EXIT_MSG}: ${EXIT_MSG_BODY}" +exit $EXIT_CODE |