使用shell脚本进行服务器系统监控——文件系统监控（2）

#!/usr/bin/ksh

WORKFILE="/tmp/df.work" # Holds filesystem data
>$WORKFILE              # Initialize to empty
OUTFILE="/tmp/df.outfile" # Output display file
>$OUTFILE  # Initialize to empty
BINDIR="/usr/local/bin" # Local bin directory
THISHOST=`hostname` # Hostname of this machine
FSMAX="85"              # Max. FS percentage value

EXCEPTIONS="${BINDIR}/exceptions" # Overrides $FSMAX
DATA_EXCEPTIONS="/tmp/dfdata.out" # Exceptions file w/o #, comments

function load_EXCEPTIONS_file
{
cat $EXCEPTIONS |  grep -v "^#" | sed /^$/d > $DATA_EXCEPTIONS
}

function check_exceptions
{

# set -x # Uncomment to debug this function

while read FSNAME NEW_MAX # Feeding Ddata from Bottom of Loop!!!
do
        if [[ $FSNAME = $FSMOUNT ]] # Correct /mount_point?
        then    # Get rid of the % sign, if it exists!
                NEW_MAX=$(echo $NEW_MAX | sed s//%//g)

                if [ $FSVALUE -gt $NEW_MAX ]
                then #  Over Limit...Return a "0", zero
                        return 0 # FOUND MAX OUT - Return 0
                fi
        fi

done < $DATA_EXCEPTIONS # Feed from the bottom of the loop!!

return 1 # Not found in File
}

######## START OF MAIN #############

[[ -s $EXCEPTIONS ]] && load_EXCEPTIONS_file

# Get the data of interest by stripping out the
# /cdrom row and keeping columns 1, 5 and 6

df -k | tail +2 | egrep -v '/cdrom' /
   | awk '{print $1, $5, $6}' > $WORKFILE

# Loop through each line of the file and compare column 2

while read FSDEVICE FSVALUE FSMOUNT
do
     # Strip out the % sign if it exists
     FSVALUE=$(echo $FSVALUE | sed s//%//g) # Remove the % sign
     if [[ -s $EXCEPTIONS ]] # Do we have a non-empty file?
     then # Found it!

        # Look for the current $FSMOUNT value in the file
        # using the check_exceptions function defined above.

        check_exceptions
        RC=$?
        if [ $RC -eq 0 ] # Found it Exceeded!!
        then
            echo "$FSDEVICE mount on $FSMOUNT is ${FSVALUE}%" /
                  >> $OUTFILE
        elif [ $RC -eq 1 ] # Not founf in exceptions file, use defaults
        then
             if [ $FSVALUE -gt $FSMAX ] # Use Script Default
             then
                  echo "$FSDEVICE mount on $FSMOUNT is ${FSVALUE}%" /
                        >> $OUTFILE
             fi
        fi
     else # No exceptions file use the script default
             if [ $FSVALUE -gt $FSMAX ] # Use Script Default
             then
                  echo "$FSDEVICE mount on $FSMOUNT is ${FSVALUE}%" /
                        >> $OUTFILE
             fi
     fi
done < $WORKFILE # Feed the while loop from the bottom...

# Display output if anything is exceeded...

if [[ -s $OUTFILE ]]
then
      echo "/nFull Filesystem(s) on $THISHOST/n"
      cat $OUTFILE
      print
fi
 

原文链接： http://blog.csdn.net/jaminwm/article/details/1507951