initial commit
This commit is contained in:
Fabio Scotto di Santolo
280
chapter17/fs_mon_HPUX_PC_MBFREE.ksh
Executable file
280
chapter17/fs_mon_HPUX_PC_MBFREE.ksh
Executable file
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#!/usr/bin/ksh
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#
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# SCRIPT: fs_mon_HPUX_PC_MBFREE.ksh
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# AUTHOR: Randy Michael
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# DATE: 08-22-2007
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# REV: 4.3.P
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# PURPOSE: This script is used to monitor for full filesystems,
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# which is defined as "exceeding" the MAX_PERCENT value.
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# A message is displayed for all "full" filesystems.
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#
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# PLATFORM: HP-UX
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#
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# REV LIST:
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# Randy Michael - 08-27-2007
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# Changed the code to use MB of free space instead of
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# the %Used method.
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#
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# Randy Michael - 08-27-2007
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# Added code to allow you to override the set script default
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# for MIN_MB_FREE of FS Space
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#
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# Randy Michael - 08-28-2007
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# Changed the code to handle both %Used and MB of Free Space.
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# It does an "auto-detection" but has override capability
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# of both the trigger level and the monitoring method using
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# the exceptions file pointed to by the $EXCEPTIONS variable
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#
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# set -n # Uncomment to check syntax without any execution
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# set -x # Uncomment to debug this script
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#
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##### DEFINE FILES AND VARIABLES HERE ####
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WORKFILE="/tmp/df.work" # Holds filesystem data
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>$WORKFILE # Initialize to empty
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OUTFILE="/tmp/df.outfile" # Output display file
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>$OUTFILE # Initialize to empty
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EXCEPTIONS="/usr/local/bin/exceptions" # Override data file
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DATA_EXCEPTIONS="/tmp/dfdata.out" # Exceptions file w/o # rows
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EXCEPT_FILE="N" # Assume no $EXCEPTIONS FILE
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THISHOST=`hostname` # Hostname of this machine
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MIN_MB_FREE="100MB" # Min. MB of Free FS Space
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MAX_PERCENT="85%" # Max. FS percentage value
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FSTRIGGER="1000MB" # Trigger to switch from % Used to MB Free
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###### FORMAT VARIABLES HERE ######
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# Both of these variables need to multiplied by 1024 blocks
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(( MIN_MB_FREE = $(echo $MIN_MB_FREE | sed s/MB//g) * 1024 ))
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(( FSTRIGGER = $(echo $FSTRIGGER | sed s/MB//g) * 1024 ))
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####### DEFINE FUNCTIONS HERE ########
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function check_exceptions
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{
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# set -x # Uncomment to debug this function
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while read FSNAME FSLIMIT
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do
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IN_FILE="N"
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# Do an NFS sanity check and get rid of any ":".
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# If this is found it is actaully an error entry
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# but we will try to resolve it. It will only
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# work if it is an NFS cross mount to the same
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# mount point on both machines.
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echo $FSNAME | grep ':' >/dev/null \
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&& FSNAME=$(echo $FSNAME | cut -d ':' -f2)
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# Check for empty and null variable
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if [[ ! -z $FSLIMIT && $FSLIMIT != '' ]]
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then
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if [[ $FSNAME = $FSMOUNT ]] # Found it!
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then
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# Check for "MB" Characters...Set IN_FILE=MB
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echo $FSLIMIT | grep MB >/dev/null && IN_FILE="MB" \
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&& (( FSLIMIT = $(echo $FSLIMIT \
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| sed s/MB//g) * 1024 ))
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# check for "%" Character...Set IN_FILE=PC, for %
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echo $FSLIMIT | grep "%" >/dev/null && IN_FILE="PC" \
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&& FSLIMIT=$(echo $FSLIMIT | sed s/\%//g)
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case $IN_FILE in
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MB)
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# Up-case the characters, if they exist
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FSLIMIT=$(echo $FSLIMIT | tr '[a-z]' '[A-Z]')
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# Get rid of the "MB" if it exists
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FSLIMIT=$(echo $FSLIMIT | sed s/MB//g)
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# Test for blank and null values
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if [[ ! -z $FSLIMIT && $FSLIMIT != '' ]]
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then
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# Test for a valid filesystem "MB" limit
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if (( $FSLIMIT >= 0 && $FSLIMIT < $FSSIZE ))
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then
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if (( $FSMB_FREE < $FSLIMIT ))
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then
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return 1 # Found out of limit using MB Free method
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else
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return 3 # Found OK
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fi
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else
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echo "\nERROR: Invalid filesystem MAX for $FSMOUNT - $FSLIMIT"
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echo " Exceptions file value must be less than or"
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echo " equal to the size of the filesystem measured"
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echo " in 1024 bytes\n"
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fi
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else
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echo "\nERROR: Null value specified in excepeptions file"
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echo " for the $FSMOUNT mount point.\n"
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fi
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;;
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PC)
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# Strip out the % sign if it exists
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PC_USED=$(echo $PC_USED | sed s/\%//g)
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# Test for blank and null values
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if [[ ! -z $FSLIMIT && $FSLIMIT != '' ]]
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then
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# Test for a valid percentage, i.e. 0-100
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if (( $FSLIMIT >= 0 && $FSLIMIT <= 100 ))
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then
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if (( $PC_USED > $FSLIMIT ))
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then
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return 2 # Found exceeded by % Used method
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else
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return 3 # Found OK
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fi
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else
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echo "\nERROR: Invalid percentage for $FSMOUNT - $FSLIMIT"
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echo " Exceptions file values must be"
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echo " between 0 and 100%\n"
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fi
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else
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echo "\nERROR: Null value specified in excepeptions file"
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echo " for the $FSMOUNT mount point.\n"
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fi
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;;
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N)
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# Method Not Specified - Use Script Defaults
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if (( $FSSIZE >= $FSTRIGGER ))
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then # This is a "large" filesystem
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if (( $FSMB_FREE < $MIN_MB_FREE ))
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then
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return 1 # Found out of limit using MB Free method
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else
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return 3 # Found OK
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fi
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else # This is a standard filesystem
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PC_USED=$(echo $PC_USED | sed s/\%//g) # Remove the %
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FSLIMIT=$(echo $FSLIMIT | sed s/\%//g) # Remove the %
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if (( $PC_USED > $FSLIMIT ))
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then
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return 2 # Found exceeded by % Used method
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else
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return 3 # Found OK
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fi
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fi
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;;
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esac
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fi
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fi
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done < $DATA_EXCEPTIONS # Feed the loop from the bottom!!!
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return 4 # Not found in $EXCEPTIONS file
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}
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####################################
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function display_output
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{
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if [[ -s $OUTFILE ]]
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then
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echo "\nFull Filesystem(s) on $THISHOST\n"
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cat $OUTFILE
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print
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fi
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}
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####################################
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function load_EXCEPTIONS_data
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{
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# Ingore any line that begins with a pound sign, #
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cat $EXCEPTIONS | grep -v "^#" > $DATA_EXCEPTIONS
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}
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####################################
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function load_FS_data
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{
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bdf | tail +2 | egrep -v '/cdrom' \
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| awk '{print $1, $2, $4, $5, $6}' > $WORKFILE
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}
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####################################
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######### START OF MAIN ############
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####################################
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load_FS_data
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# Do we have a non-zero size $EXCEPTIONS file?
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if [[ -s $EXCEPTIONS ]]
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then # Found a non-empty $EXCEPTIONS file
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load_EXCEPTIONS_data
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EXCEP_FILE="Y"
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fi
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while read FSDEVICE FSSIZE FSMB_FREE PC_USED FSMOUNT
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do
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if [[ $EXCEP_FILE = "Y" ]]
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then
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check_exceptions
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CE_RC="$?" # Check Exceptions Return Code (CE_RC)
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case $CE_RC in
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1) # Found exceeded in exceptions file by MB Method
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(( FS_FREE_OUT = $FSMB_FREE / 1000 ))
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echo "$FSDEVICE mounted on $FSMOUNT has ${FS_FREE_OUT}MB Free" \
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>> $OUTFILE
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;;
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2) # Found exceeded in exceptions file by %Used method
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echo "$FSDEVICE mount on $FSMOUNT is ${PC_USED}%" \
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>> $OUTFILE
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;;
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3) # Found OK in exceptions file
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: # NO-OP Do Nothing
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;;
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4) # Not found in exceptions file - Use Default Triggers
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if (( $FSSIZE >= $FSTRIGGER ))
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then # This is a "large" filesystem
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FSMB_FREE=$(echo $FSMB_FREE | sed s/MB//g) # Remove the "MB"
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if (( $FSMB_FREE < $MIN_MB_FREE ))
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then
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(( FS_FREE_OUT = $FSMB_FREE / 1000 ))
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echo "$FSDEVICE mounted on $FSMOUNT has ${FS_FREE_OUT}MB Free" \
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>> $OUTFILE
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fi
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else # This is a standard filesystem
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PC_USED=$(echo $PC_USED | sed s/\%//g)
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MAX_PERCENT=$(echo $MAX_PERCENT | sed s/\%//g)
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if (( $PC_USED > $MAX_PERCENT ))
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then
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echo "$FSDEVICE mount on $FSMOUNT is ${PC_USED}%" \
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>> $OUTFILE
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fi
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fi
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;;
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esac
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else # NO $EXECPTIONS FILE USE DEFAULT TRIGGER VALUES
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if (( $FSSIZE >= $FSTRIGGER ))
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then # This is a "large" filesystem - Use MB Free Method
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FSMB_FREE=$(echo $FSMB_FREE | sed s/MB//g) # Remove the "MB"
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if (( $FSMB_FREE < $MIN_MB_FREE ))
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then
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(( FS_FREE_OUT = $FSMB_FREE / 1000 ))
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echo "$FSDEVICE mounted on $FSMOUNT has ${FS_FREE_OUT}MB Free" \
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>> $OUTFILE
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fi
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else # This is a standard filesystem - Use % Used Method
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PC_USED=$(echo $PC_USED | sed s/\%//g)
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MAX_PERCENT=$(echo $MAX_PERCENT | sed s/\%//g)
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if (( $PC_USED > $MAX_PERCENT ))
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then
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echo "$FSDEVICE mount on $FSMOUNT is ${PC_USED}%" \
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>> $OUTFILE
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fi
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fi
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fi
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done < $WORKFILE
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display_output
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# End of Script
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