Fixed version of a nagios scheduled service downtime script. Handles parsing of config better, allowing spaces.

schedule_service_downtime.sh

#! /bin/bash
#
# Write commands into the Nagios command file to schedule service
# downtime.
#
# Author: Kelly Cobean, Jr. <[email protected]>
#
# Based on a similar script by Sam Tilders <[email protected]>
#
# Requires:
#  GNU Date (Solaris' native date command sucks.  Check /opt/sfw/bin
#		for the gdate binary. If you're running on linux,
#		the 'date' binary is what you need, just make sure to
#		adjust the 'DATECMD' variable in this script.
#		
#	Bash shell
#
# NOTES:
# 1) In order for Nagios to process any commands that
#    are written to the command file, you must enable
#    the check_external_commands option in the main
#    configuration file.
#
# CAVEATS:
# This script was written on Solaris8, so if you are running it on 
# Linux (like most sane people would), be sure to test thoroughly and
# adjust the variables as necessary.
# I'm not fancy enough to do the whole O/S detection thing, and on Solaris,
# all bets are off regarding where some of the binaries would be anyway.
#
# This script calculates the necessary UNIX times for TODAYS calendar date
# *PLUS* the time specified in the downtime file.  This script cannot be
# used to schedule downtimes for "tomorrow" or any other day that isn't the
# current day.  As such, it's recommended that you run this script daily at
# mid-night (or 12:01 or similar) to set your regularly scheduled downtimes
# for each day.
# There is, however, enough intelligence in the script so that you can 
# determine which days you want downtime to be scheduled for and only
# schedule it when the day of the week equals the day specified in the 
# downtime file.  This allows for fairly flexible dowtime scheduling.
#
# See the downtime file for details and examples.

if [ $# -gt 0 ]; then
	usage
	exit 1
fi

# Set Global Variables...

DATECMD="/bin/date"
ECHOCMD="echo"
CONF_FILE="/etc/nagios/service_downtime.cfg"
CMD_FILE="/usr/local/nagios/var/rw/nagios.cmd"
COMMENT="Regularly Scheduled Dowtime"
#C_UTIME=`$DATECMD +%s`
C_YMD=`$DATECMD +%Y-%m-%d`
C_DTIME=`$DATECMD +%Y-%m-%d-%H-%M-%S | awk -F- '{ print $1"-"$2"-"$3,$4":"$5":""00" }'`
C_DOW=`$DATECMD +%w`

# Begin processing of the config file

grep -v '^#' $CONF_FILE | grep -v '^$' | while read i
do
    # Set the current UNIX Time for each iteration of through the .cfg file
    C_UTIME=`$DATECMD +%s`
    # Test for comments
    $ECHOCMD  $i | grep "#" > /dev/null
    if [ $? = 1 ]; then 
        # Split line into separate fields (out1-7)
        n=0
        OLD_IFS=$IFS
        IFS=,
        for field in $i
        # Set increment variable equal to each field
        do
            n=`expr $n + 1`
            eval out$n="'$field'"
        done
        IFS=$OLD_IFS
        # Test each stanza in config file to see if it applies today
        $ECHOCMD $out6 | grep $C_DOW > /dev/null
        if [ $? = 0 ]; then
            # Set unix start time variable.
            S_UTIME=`$DATECMD -d "$C_YMD $out3" +%s`
            # Set unix finish time variable to start time + duration.
            F_UTIME=`expr $S_UTIME + $out4`
            # Now that we have all of our variables, get them into the
            # Nagios command file.
            $ECHOCMD "[$C_UTIME] SCHEDULE_SVC_DOWNTIME;$out1;$out2;$S_UTIME;$F_UTIME;1;0;$out4;$out5;$COMMENT" >> $CMD_FILE
            sleep 1
        fi
    fi 
done

usage()
{
        echo " "
        echo "This script is meant to be executed by cron daily."
        echo "The downtime.cfg file is read and those entries"
        echo "are inserted as 'external commands' (see nagios doc's"
        echo "for details) using the nagios.cmd file."
        echo "Format for the config file is as follows:"
        echo ""
        echo "<host>,<svc>,<start-time>,<duration>,<user>,<days_of_week_to_run>"
        echo ""
        echo "Please note that username should be your Nagios login and"
        echo "start time should be in the format of HH:MM:SS"
        echo "Duration is given in seconds, and the <host> and <svc>"
        echo "variables are case sensitive (aren't pretty much all things"
        echo "unix?)"
        echo "See the examples in the config files for more details"
        echo " "
}