Create check_reboot_req.bash

check_reboot_req.bash

@@ -0,0 +1,139 @@
+#!/bin/bash
+#
+# Check if reboot is required plugin for Nagios for Debian/Ubuntu Systems
+# Written by Senthil Nathan 
+# Last Modified: 10/31/2023
+#
+# Usage: ./check_reboot_req -w 0 -c 2
+#
+# Description:
+#
+# This plugin will send an alert if the servers needs to be rebooted
+#
+# Output:
+#
+# System OK
+# Reboot required
+#
+#
+# Notes:
+#
+# Update RFILENAME as required
+#
+#
+
+ECHO="/bin/echo"
+GREP="/bin/egrep"
+DIFF="/usr/bin/diff"
+TAIL="/usr/bin/tail"
+CAT="/bin/cat"
+RM="/bin/rm"
+CHMOD="/bin/chmod"
+TOUCH="/bin/touch"
+
+PROGNAME=`/usr/bin/basename $0`
+PROGPATH=`echo $0 | sed -e 's,[\\/][^\\/][^\\/]*$,,'`
+REVISION="1.0"
+
+. $PROGPATH/utils.sh
+
+RFILENAME=/var/run/reboot-required
+
+print_usage() {
+    echo "Without parameters defaults to -w 0 and -c 1"
+    echo "Usage: $PROGNAME"
+    echo "Usage: $PROGNAME -w days -c days"
+    echo "Usage: $PROGNAME --help"
+    echo "Usage: $PROGNAME --version"
+}
+
+print_help() {
+    print_revision $PROGNAME $REVISION
+    echo ""
+    print_usage
+    echo ""
+    echo "Plugin for Nagios to alert if system needs a reboot"
+    echo ""
+    support
+}
+
+# Grab the command line arguments
+
+exitstatus=$STATE_WARNING #default
+while test -n "$1"; do
+    case "$1" in
+        --help)
+            print_help
+            exit $STATE_OK
+            ;;
+        -h)
+            print_help
+            exit $STATE_OK
+            ;;
+        --version)
+            print_revision $PROGNAME $REVISION
+            exit $STATE_OK
+            ;;
+        -V)
+            print_revision $PROGNAME $REVISION
+            exit $STATE_OK
+            ;;
+        --warning)
+            warn=$2
+            shift
+            ;;
+        -w)
+            warn=$2
+            shift
+            ;;
+        --critical)
+            crit=$2
+            shift
+            ;;
+        -c)
+            crit=$2
+            shift
+            ;;
+        -x)
+            exitstatus=$2
+            shift
+            ;;
+        --exitstatus)
+            exitstatus=$2
+            shift
+            ;;
+        *)
+            echo "Unknown argument: $1"
+            print_usage
+            exit $STATE_UNKNOWN
+            ;;
+    esac
+    shift
+done
+
+# Check begins here
+if [ -z $warn ]; then
+    declare -i warn=0
+fi
+if [ -z $crit ]; then
+    declare -i crit=1
+fi
+#
+if [ -f "${RFILENAME}" ]; then
+    CDATE=$(date +%s)
+    FDATE=`stat -c %Y -- "${RFILENAME}"`
+    DDIFF=$(($CDATE-$FDATE))
+    DIFFDAYS=$((DDIFF/86400))
+    if [ $DIFFDAYS -ge $crit ]; then
+        exitstatus=$STATE_CRITICAL
+    elif [ $DIFFDAYS -ge $warn ]; then
+        exitstatus=$STATE_WARNING
+    else
+        exitstatus=$STATE_OK
+    fi
+    echo "Reboot required"
+else
+    echo "System OK"
+    exitstatus=$STATE_OK
+fi
+exit $exitstatus