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3628 Views 5 Replies Latest reply: Jul 6, 2011 1:08 AM by James Stewart RSS
James Stewart Rank: Green Belt
James Stewart
91 posts since
Dec 1, 2010
Currently Being Moderated

Jun 29, 2011 11:50 PM

Toggling zMonitor via ZendMD to enable/disable Process Monitoring

Hello all,

 

I have a requirement to monitor a large number of in-house developed processes that start and stop at different times throughout the day. As such I have built a script that uses zendmd to set the zMonitor property of a process on a given device to True/False at certain times. It sets the property thusly:

 

procs = device.os.processes.findObjectsById('my_process_name')

 

for proc in procs:

      process.setAqProperty('zMonitor', True, 'boolean')     # or False to disable monitoring

 

commit()

 

In the GUI, this successfully sets the "Monitored" flag for the given process on the given device to True/False. However when I set the Monitored flag in this way it seems to have no effect at all.

 

Manually changing the "Monitored" flag in the GUI causes zenprocess to start/stop monitoring the given process, (I can see it doing so in zenprocess.log) but using my script there is no change, even though the flag changes in the GUI.

 

Does anyone have an idea why this might be? Is there a step I'm missing after process.setAqProperty that would cause the new property take effect?

 

Thanks... James

  • James Stewart Rank: Green Belt
    James Stewart
    91 posts since
    Dec 1, 2010
    Currently Being Moderated
    1. Jun 30, 2011 3:01 AM (in response to James Stewart)
    Re: Toggling zMonitor via ZendMD to enable/disable Process Monitoring

    Ok, a little more information...

     

    I've also tried setting proc.monitor = True, but this doesnt seem to help either. Here is a zendmd session in which I try to enable process monitoring of 'my_test_process':

     

    >>> device = dmd.Devices.findDevice('myserver.mydomain.com')
    >>> proc = device.os.processes.findObjectsById('my_test_process')[0]
    >>> proc
    <OSProcess at /zport/dmd/Devices/Server/Linux/devices/myserver.mydomain.com/os/processes/my_test_process>
    >>> proc.setAqProperty('zMonitor', True,'boolean')
    'Set local zMonitor'
    >>> proc.monitor = True
    >>> commit()
    >>> proc.getAqProperty('zMonitor')
    True
    >>> proc.monitor
    True
    >>> proc.monitored()
    True

     

    As you can see, all of the various monitoring vars seem to be set correctly and have been committed. And yet zenprocess still will not monitor the test process. However if I go to the GUI and set the 'Monitored' flag there, zenprocess begins monitoring immediately.

     

    It may be worth noting that I have applied changeset 25791 to my Zenoss 3.1.0 install: http://dev.zenoss.com/trac/changeset/25791

     

    This was to fix a bug that prevented process monitoring being enabled/disabled from the GUI. Not sure if this may have caused a problem?

     

    Any suggestions would be greatly appreciated...

  • James Stewart Rank: Green Belt
    James Stewart
    91 posts since
    Dec 1, 2010
    Currently Being Moderated
    2. Jul 4, 2011 3:13 AM (in response to James Stewart)
    Re: Toggling zMonitor via ZendMD to enable/disable Process Monitoring

    I was advised to try setting zMonitor using setZenProperty, like this:

     

    proc.setZenProperty('zMonitor', True)

     

    However after doing this and commit()ing, the process in question is still not monitored.

     

    This appears to be a major bug. It seems that there is no way to turn monitoring on and off for a process via zendmd.

     

    Does anybody have any ideas or suggestions? Otherwise I guess I'll raise a trac ticket...

  • James Stewart Rank: Green Belt
    James Stewart
    91 posts since
    Dec 1, 2010
    Currently Being Moderated
    3. Jul 5, 2011 2:28 AM (in response to James Stewart)
    Re: Toggling zMonitor via ZendMD to enable/disable Process Monitoring

    For anybody that's interested, I've raised a trac ticket for this: http://dev.zenoss.com/trac/ticket/7853

  • Chet Luther ZenossEmployee
    Chet Luther
    1,302 posts since
    May 22, 2007
    Currently Being Moderated
    4. Jul 5, 2011 9:38 AM (in response to James Stewart)
    Re: Toggling zMonitor via ZendMD to enable/disable Process Monitoring

    You can find the code that the web interface goes through to set the monitor

    flag in the ServiceMonitor method in

    $ZENHOME/Products/Zuul/infos/compnent/__init__.py. The only difference

    between what you're doing, and what it does is that it indexes the process

    object after running the setAqProperty method and setting the monitor

    attribute.

     

    So try this in zendmd..

     

    proc = device.os.processes.findObjectsById('my_test_process')[0]

    proc.setAqProperty('zMonitor', True)

    proc.monitor = True

    proc.index_object()

    commit()

  • James Stewart Rank: Green Belt
    James Stewart
    91 posts since
    Dec 1, 2010
    Currently Being Moderated
    5. Jul 6, 2011 1:08 AM (in response to Chet Luther)
    Re: Toggling zMonitor via ZendMD to enable/disable Process Monitoring

    Thanks Chet, that was it...

     

    I had tried proc.index_object() before (honestly!!!) but that was before I'd started doing proc.monitor=True as well as proc.setZenProperty('zMonitor', True).

     

    So with all together in combination I am able to turn individual proc monitoring on/off with zendmd. Awesome!...:-)

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