On a regular basis I noticed that people forget to monitor the free diskspace of their VMFS volumes. I created a script that can easily be scheduled with crontab and mailed with smtp_send. You can send it as an html based email if you setup MIME correctly. (For more info on how to set this up, check this blog) The script creates an html file with a table in which the necessary info is dumped, if a VMFS volume has less than 10% free space that specific line will be yellow and if it’s less than 5% than that line will be red… So a helpdesk should be able to monitor it and warn you in case it runs or will run out of diskspace.
The script, and you can download it here!:
#!/bin/bash
# Script voor het controleren op het bestaan van Snapshots
LOGLOC="/var/log/"
LOG="${LOGLOC}vdf.html"
MYDATE=$(date +%d-%m-%y)
VMFSYELLOW=90
VMFSRED=95cat /dev/null > "${LOG}"
echo "<html>" >> "${LOG}"
echo "<head>" >> "${LOG}"
echo "<style>" >> "${LOG}"
echo "body {margin: 10px; width: 600px; font-family:arial; font-size: 10px;}" >> "${LOG}"
echo "div#footer {font-size: 9px;}" >> "${LOG}"
echo "</style>" >> "${LOG}"
echo "</head>" >> "${LOG}"
echo "<body>" >> "${LOG}"echo "<table cellspacing="0" cellpadding="2" border="1"; style='border-collapse:collapse; background-color: white; color: black'>" >> "${LOG}"
echo "<tr><th colspan='5'; align='left'; style='background-color: rgb(179,179,179); color: black'>" >> "${LOG}"
echo "VMFS Disk Usage - $MYDATE</th></tr>" >> "${LOG}"
echo "" >> "${LOG}"
echo "<tr>" >> "${LOG}"
echo "<td><b>VMFS Volume</b></td><td><b>Disk Size</b></td><td><b>Used</b></td><td><b>Available</b></td><td><b>Percentage</b></td>" >> "${LOG}"
echo "</tr>" >> "${LOG}"
vdf -h -P | grep -E '^/vmfs/volumes/' | awk '{ print $2 " " $3 " " $4 " " $5 " " $6 }' | while read output ; do
DISKSIZE=$(echo $output | awk '{ print $1 }' )
DISKUSED=$(echo $output | awk '{ print $2 }' )
DISKAVAILABLE=$(echo $output | awk '{ print $3 }' )
PERCENTINUSE=$(echo $output | awk '{ print $4 }' )
VOLNAME=$(echo $output | awk '{ print $5 }' )
CUTPERC=$(echo $PERCENTINUSE | cut -d'%' -f1 )
WARNING="white"
if [ $CUTPERC -ge $VMFSYELLOW ] ; then
WARNING="yellow"
fi
if [ $CUTPERC -ge $VMFSRED ] ; then
WARNING="red"
fi
echo "<tr><td style='background-color: ${WARNING}'>$VOLNAME</td>" >> "${LOG}"
echo "<td style='background-color: ${WARNING}'>$DISKSIZE</td>" >> "${LOG}"
echo "<td style='background-color: ${WARNING}'>$DISKUSED</td>" >> "${LOG}"
echo "<td style='background-color: ${WARNING}'>$DISKAVAILABLE</td>" >> "${LOG}"
echo "<td style='background-color: ${WARNING}'>$PERCENTINUSE</td></tr>" >> "${LOG}"
done
echo "</table>" >> "${LOG}"
echo "<div id='footer'>Created by Ictivity bv.</div>" >> "${LOG}"
echo "</body>" >> "${LOG}"
echo "</html>" >> "${LOG}"
The output will look similar to this:
I really want to try out this script in my environment. Thanks for posting this. Can you describe what you mean by “You can send it as an html based email if you setup MIME correctly.”
Should MIME be configured on the ESX server or is that for IIS or something like that? If you could point me to a link or documentation for getting that configured it would be greatly appreciated!