Monitoring ESXi with Python script
Created on: Aug 20, 2008 7:53 AM by couak - Last Modified: Jan 18, 2009 11:58 AM by couak
I wrote a script in Python to monitor my free ESXi servers. It is my very first script in Python language... I'm used to write in Perl so please be indulgent. The script was written for Nagios-oriented monitoring but you can easily translate it for another monitoring tool by re-defining exit codes.
i love the script, i use it from windows with whatsup. I wrote a whatsup wrapper to use it.
http://www.stephenjc.com/2009/01/whatsup-vmware-esxi-monitor-these.html
your script works great from the command line, but i ran into problems when trying to define the check command for nagios. would you mind sharing how you got it to work?
edit: i keep getting a (null) return 
Thanks
Awesome work! Works great from a linux box. I did receive this error from a windows box:
C:\Python26\lib\site-packages\pywbem\cim_types.py:164: DeprecationWarning: object.__init__() takes no parameters
int.__init__(self, arg, base)
However the command appears to have completed successfully regardless.
Works in Zenoss too:
http://linuxtrek1.blogspot.com/2009/02/zenoss-monitor-free-esxi-version.html
It works great on Red Hat EL5 with the rpm above, or even on the ancient EL4 if you install the older pywbem-0.5 for python-2.3.
I also made a small improvement (full script available at http://staff.washington.edu/joshuadf/esxi/ ) to catch problems with EnumerateInstances. This catches AuthError for wrong password and should also work for the CIM_Memory problem described at http://communities.vmware.com/message/1069795 and http://communities.vmware.com/thread/163730
instance_list = wbemclient.EnumerateInstances(classe)
+ except pywbem.cim_operations.CIMError,args:
+ verboseoutput("Unknown CIM Error: %s" % args, verbose)
+ except pywbem.cim_http.AuthError,arg:
+ verboseoutput("GLobal exit set to CRITICAL", verbose)
+ GlobalStatus = ExitCritical
+ ExitMsg += "CRITICAL : AuthError: %s
" % arg
+ else:
By the way at least on my Dell PowerEdge 2950s you can also get these:
'OMC_Fan',
'OMC_PowerSupply',
fix it!
Download the pywbem 0.7 (pywbem-0.7.0.tar.gz), open the file cim_types.py, copy the "# CIM integer types" section and replace it in your 0.6 "C:\Python26\Lib\site-packages\pywbem\cim_types.py"
The error doesn't come out anymore.
=========================================================================
Max
I'm having the same result via Nagios, (null), but from the command line I get OK, or in verbose mode see all of the checks.
Here's how I have the command defined in commands.cfg:
define command{
command_name check_esx_wbem
command_line $USER1$/check_esx_wbem.py https://$HOSTADDRESS:5989 $ARG2$ $ARG3$
}
And the check as defined for one of my ESXi servers
- username and password masked
use linux-critical-server-service
host_name esx01
service_description ESXi Hardware Monitor
check_command check_esx_wbem!readonlyuser!somepassword
}
I modified the script by adding the try catch block and now it works through nagios, strange in that I didn't change any of the nagios configurations.
Thanks to Joshua:
http://staff.washington.edu/joshuadf/esxi/check_esx_wbem.py
Wow, I just discovered this and all I can say is thank you.
A tip for users of distros without python-wbem (like Ubuntu):
Get it from http://sourceforge.net/project/showfiles.php?group_id=133883
and install it with `python setup.py install`
I just saw this script. I have a few newbie questions:
1. Where on my ESXi host do I store this script?
2. Can I setup a cron job so that it runs the script at a certain time and then send an email?
Thanks
After ESXi have been updated with this pachege from HP: hp-esxi4.0uX-bundle-1.1.zip (google the file name if you want to find it)extra classes has to been added to the script: http://www.intellipool.se/forum/lofiversion/index.php/t1548.html to alså check the new features. (Storage)
After this update ESXi is aware of HP Storage adapers and disks.
One of our servers now shows a warning in vSpehere Client regarding storage (maybe faulty battery or something), but shows OK using this script.
Any ideas anyone?
Works great, thanks! I just set it up on Fedora using the python-pywbem package linked here: https://bugzilla.redhat.com/245688 (should be in Fedora soon). My next step will be building python-pywbem on RHEL5 and trying it there.