[python-win32] Can't import wmi in scripts run by nrpe_nt

[Jan Van Uytven (Wyvern)]

Hi Martin,

I had considered this and set the nrpe_nt service to run as myself (a
domain admin) instead of the system account. It did not make a
difference.

I modified the script to print sys.path and ran it through nrpe. It
correctly printed out the contents of the PYTHONPATH variable.

Thanks for the thought, though.

Jan


On Tue, 2004-10-26 at 11:22 -0700, Martin Richard wrote:
> Jan,
> 
> Could it have anything to do with the privileges available to you when
> running locally vs. those available for whatever-the-effective-user-is
> when running remote?  Or perhaps the environment variables for each of
> those?
> 
> Rick
> 
> -----Original Message-----
> From: python-win32-bounces at python.org
> [mailto:python-win32-bounces at python.org] On Behalf Of Jan Van Uytven
> (Wyvern)
> Sent: Tuesday, October 26, 2004 10:29 AM
> To: python-win32 at python.org
> Subject: RE: [python-win32] Can't import wmi in scripts run by nrpe_nt
> 
> 
> I'm sorry, I could have phrased this better.
> 
> BTW, I'd like to congratulate you on wmi. If it weren't so useful to me
> I wouldn't be trying to solve this problem.
> 
> Machine A is a linux box. It has Nagios installed on it. On this machine
> is a plugin, check_nrpe, which can be called to return the result of a
> given command on a remote box that runs the nrpe daemon, such as Machine
> B.
> 
> Machine B is a Windows 2003 server. It has Python 2.3, The Win32
> extensions, and WMI installed. It has a service, nrpe_nt, which can
> receive commands from Machine A to execute and return the results of any
> script or executable you define.
> 
> On Machine B, I have written a simple script, check_python.py, It's just
> this:
> 
> import sys,wmi
> print "Imported wmi!"
> sys.exit(0)
> 
> On Machine B, this works fine when I run it from the command line
> ("python check_python.py") or from inside PythonWin. 
> 
> I have set up nrpe_nt so that when it receives the command
> 'check_python' from Machine A it executes this: "C:\Python23\python.exe
> C:\NRPE_NT\bin\check_python.py"
> 
> However when I actually run the command the script bombs out and the
> only reply I get from Machine B (on Machine A, where check_nrpe is) is
> 
> tombstone libexec # ./check_nrpe -H xxx.xxx.xxx.xxx -c check_python
> Traceback (most recent call last):
> 
> After removing 'wmi' from the import list, it worked. But putting it
> back in causes the script to bomb, and I don't know why. These work:
> * import sys,os
> * import sys,os,win32com
> * import sys,os,win32com,win32security
> But this doesn't:
> * import sys,wmi
> 
> I also tried the full path version of the command manually. It works.
> 
> So there's something different that happens when you import wmi from an
> interactive script versus when it's called remotely by nrpe_nt. I've
> asked the nrpe_nt dev, but he's stumped (not being a python guy).
> 
> Is there something specific that happens when wmi gets imported? I used
> the imp module, and the problem is not that the module can't be found,
> it's that something weird happens when it gets loaded.
> 
> Thanks,
> 
> Jan
> 
> 
> 
> 
> On Tue, 2004-10-26 at 14:57 +0100, Tim Golden wrote:
> > [Wyvern List]
> > | When nagios calls nrpe_nt on a remote machine with a specific
> > | command to execute, the nrpe_nt service maps the nagios command 
> > | to a specific command to be executed on the windows box. 
> > | for example nrpe_nt might have a definition to map the nagios 
> > | command 'check_disk' to a command such as 
> > | "C:\Python23\python.exe C:\NRPE_NT\bin\DiskFree.py"
> > | 
> > | The aforementioned DiskFree.py is a simple python script I nabbed 
> > | from Tim Golden's "WMI Cookbook" that uses the wmi module. It works 
> > | like a charm when called locally, but when called by nrpe_nt the 
> > | script bombs out with the non-helpful message:
> > | 
> > | tombstone libexec # ./check_nrpe -H xxx.xxx.xxx.xxx -c check_python 
> > | Traceback (most recent call last):
> > 
> > I'm not sure I understand what's happening here. Is my understanding 
> > of the scenario correct?
> > 
> > On machine A you can run some Nagios command on machine A which 
> > indirectly runs diskfree.py on machine A, invoking WMI on machine A 
> > etc. This works.
> > 
> > On machine A you run some Nagios command on machine B
> > which indirectly runs diskfree.py on machine B, invoking WMI on 
> > machine B. This gies some error.
> > 
> > In none of this are you trying to invoke WMI remotely.
> > 
> > Is this correct?
> > 
> > TJG
> > 
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> ---
> Jan Van Uytven
> Computer Systems & Network Engineer
> Convergent Media Network
> wyvern at crm3.com
> 
> Randomly selected from my quote-file:
> 
> "Before a word can be said, there must be silence. Before, and after."
> 	- Ursulu K. Le Guin, "A Wizard of Earthsea"
> 
> 
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Jan Van Uytven
Computer Systems & Network Engineer
Convergent Media Network
wyvern at crm3.com

Randomly selected from my quote-file:

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>>> LEGAL STUFF <<< 
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