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--- linux_wiki:spacewalk_reboot_check [2016/11/26 23:58]
billdozor created
+++ linux_wiki:spacewalk_reboot_check [2019/05/25 23:50]
@@ Line 1: / Line 1: @@
-====== Spacewalk Reboot Check ======
-**General Information**
-Check running kernel vs newest installed to see if the system needs a reboot.
-**Checklist**
-  * Spacewalk server configured
-  * Spacewalk client registered
-  * System with spacecmd configured
-----
-====== The Script ======
-Execute on a system that has spacecmd installed and configured.
-<code bash sw_reboot-check.sh>
-#!/bin/bash
-# Name: sw_reboot-check.sh
-# Description: Check running kernel vs newest installed to see if the system needs a reboot.
-# Last Modified: 2016-10-07
-# Recent Changes:-header format
-#                -Minor spelling correction and added comments
-####################################################################################
-##### Customize These Variables #####
-# Spacecmd command and any default arguments
-spacecmd_cmd="spacecmd -q"
-##### End of Customize Variables #####
-#=====================================
-# Functions; Main starts after
-#=====================================
-function show_usage
-{
-  echo -e "\n==== Reboot Check ===="
-  echo -e "\nDescription: Check running kernel vs newest installed to see if the system needs a reboot."
-  echo -e "\n--Usage--"
-  echo -e "-h                    => Display usage."
-  echo -e "-s system             => Check a single system's kernel."
-  echo -e "-g system-group       => Check a system groups' kernel."
-  echo -e "-a                    => Check all systems' kernel."
-  echo -e "\n--Other Requirements--"
-  echo -e "-> Spacecmd and config file setup required."
-  echo -e "-> Run as a user with admin privileges on the Spacewalk server."
-  echo -e
-}
-#=======================
-# Get Script Arguments
-#=======================
-# Reset POSIX variable in case it has been used previously in this shell
-OPTIND=1
-## Default settings ##
-# Do not assume we want to check all systems
-all_systems="no"
-## Get command line arguments ##
-while getopts "hs:g:a" opt; do
-  case "${opt}" in
-    h) # -h (help) argument
-      show_usage
-      exit 0
-    ;;
-    s) # -s system
-      single_system=${OPTARG}
-      check_type="single"
-    ;;
-    g) # -g system-group
-      system_group=${OPTARG}
-      check_type="group"
-    ;;
-    a) # -a (all systems)
-      all_systems="yes"
-      check_type="all"
-    ;;
-    *) # invalid argument
-      show_usage
-      exit 0
-    ;;
-  esac
-done
-## Argument Sanity Checks ##
-# Scenario: No arguments set
-if [[ ${all_systems} == "no" ]]; then
-  if [[ -z ${single_system} && -z ${system_group} ]]; then
-    echo -e "\n>> ERROR! You must decide on something to check."
-    show_usage
-    exit 1
-  fi
-fi
-# Scenario: All systems AND single system set
-if [[ ${all_systems} == "yes" && ${single_system} ]]; then
-  echo -e "\n>> ERROR! Incompatible arguments (check all systems and a single system)."
-  show_usage
-  exit 1
-fi
-# Scenario: All systems AND system group set
-if [[ ${all_systems} == "yes" && ${system_group} ]]; then
-  echo -e "\n>> ERROR! Incompatible arguments (check all systems and a system group)."
-  show_usage
-  exit 1
-fi
-# Scenario: Single system AND system group set
-if [[ ${single_system} && ${system_group} ]]; then
-  echo -e "\n>> ERROR! Incompatible arguments (check a single system and a system group)."
-  show_usage
-  exit 1
-fi
-#===================
-# Pre-checks: Ensure dependencies exist
-#===================
-# Check for Spacecmd
-which spacecmd &> /dev/null
-if [[ $? -ne 0 ]]; then
-  echo "\n>> Error! The command 'spacecmd' is not found or not in PATH. Exiting..."
-  exit 1
-fi
-# Check to see if a spacecmd config file exists
-if [[ ! -f ${HOME}/.spacecmd/config ]]; then
-  echo -e "\n>> Error! No spacecmd config file found at: ${HOME}/.spacecmd/config. Exiting..."
-  exit 1
-fi
-#===================
-# Main starts here
-#===================
-echo -e "========================================"
-echo -e "####=== Spacewalk: Reboot Check ====####"
-echo -e "========================================"
-echo
-echo -e "Check the following systems to see if they need a reboot..."
-if [[ ${single_system} ]]; then
-  echo -e "Checking system: ${single_system}"
-elif [[ ${system_group} ]]; then
-  echo -e "Checking system group: ${system_group}"
-else
-  echo -e "Checking ALL systems registered with Spacewalk."
-fi
-echo -e "\n=>Continue?[y/n]:\c"
-read run_script
-if [[ ${run_script} != "y" ]]; then
-  echo -e "\n>> Will not run the Reboot Check script. Exiting..."
-  exit 1
-fi
-### Kernel Variable Intent ###
-## kernel_running -> Get reported running kernel and filter output with sed to remove x86_64
-#  (leaving version number only)
-## kernel_latest -> Get installed kernels, filter kernel- and x86_64 from the name
-#  (leaving version number only). Then, sort list (field sep = '.') using fields 1-5 with version format (-V)
-#   tail -1 to get the highest version installed
-## Check System Running and Installed Kernels ##
-case ${check_type} in
-  single)
-  ## Single system ##
-    echo -e "\n>> Checking the system '${single_system}'...\n"
-    kernel_running="$(${spacecmd_cmd} system_details ${single_system} | awk '/Kernel/ {print $2}' | sed 's/.x86_64//')"
-    kernel_latest="$(${spacecmd_cmd} system_listinstalledpackages ${single_system} | grep ^kernel-[0-9] | sed 's/kernel-//' | sed 's/.x86_64//' | sort -t '.' -k1,5 -V | tail -1)"
-    if [[ ${kernel_running} != ${kernel_latest} ]]; then
-      echo -e "--> Reboot Required: ${node} (Running kernel: ${kernel_running}, Latest Installed: ${kernel_latest})"
-    fi
-  ;;
-  group)
-  ## Group of systems (Spacewalk Group) ##
-    echo -e "\n>> Checking the group '${system_group}'...\n"
-    for node in $(${spacecmd_cmd} group_listsystems ${system_group}); do
-      echo -e "-> Checking ${node}..."
-      kernel_running="$(${spacecmd_cmd} system_details ${node} | awk '/Kernel/ {print $2}' | sed 's/.x86_64//')"
-      kernel_latest="$(${spacecmd_cmd} system_listinstalledpackages ${node} | grep ^kernel-[0-9] | sed 's/kernel-//' | sed 's/.x86_64//' | sort -t '.' -k1,5 -V | tail -1)"
-      if [[ ${kernel_running} != ${kernel_latest} ]]; then
-        echo -e "--> Reboot Required: ${node} (Running kernel: ${kernel_running}, Latest Installed: ${kernel_latest})"
-      fi
-    done
-  ;;
-  all)
-  ## All Systems ##
-    echo -e "\n>> Checking all systems...\n"
-    for node in $(${spacecmd_cmd} system_list); do
-      echo -e "-> Checking ${node}..."
-      kernel_running="$(${spacecmd_cmd} system_details ${node} | awk '/Kernel/ {print $2}' | sed 's/.x86_64//')"
-      kernel_latest="$(${spacecmd_cmd} system_listinstalledpackages ${node} | grep ^kernel-[0-9] | sed 's/kernel-//' | sed 's/.x86_64//' | sort -t '.' -k1,5 -V | tail -1)"
-      if [[ ${kernel_running} != ${kernel_latest} ]]; then
-        echo -e "--> Reboot Required: ${node} (Running kernel: ${kernel_running}, Latest Installed: ${kernel_latest})"
-      fi
-    done
-  ;;
-esac
-echo -e "\n============================="
-echo -e "=- Reboot Check Completed. -="
-echo -e "============================="
-</code>
-----