[Nagiosplug-help] Check_NT question

[kyle smith]

Yes a custom plugin (you can use almost any language  to write a  
plugin) that checks to see if both of the machines are updating the  
website and then exits with a return code of 2 will do the trick.  
Here's how I would do it:
- decide which host you are going to run the plugin from, if this  
machine is not known to nagios server you will need to set that up
- write the plugin and test it out alone from cli
- install nrpe and edit the nrpe config file to define a command to  
use the plugin
- start nrpe daemon or rig as on demand service
- use local check_nrpe plugin to test your custom plugin (on OSX this  
is /usr/local/nagios/libexec/check_nrpe -H localhost -c  
<command_in_nrpe.cfg>
- test from nagios server (/usr/local/nagios/libexec/check_nrpe -H  
<ip_of_remote_client> -c <command_in_nrpe.cfg>
- if not already using check_nrpe in your nagios installation you  
need to set this up in your command.cfg file
- define new service check using check_nrpe command with same syntax  
as server cli test above
- bounce server and away you go

a lot of steps but once setup very very cool.

good luck!

kyle

On Apr 25, 2008, at 5:11 AM, Greg Martin wrote:

> Ian, perhaps you could use nrpe with a custom script (maybe using
> sc.exe) to do this.
>
> \\Greg
>
> Ian Rarity wrote:
>> Hi all,
>>
>> I was wondering if there's any way to use NSClient and check_nt to
>> generate a warning/critical alert if a particular service on a box IS
>> running?  Check_nt presupposes that the proper state for services  
>> should
>> be running, which is fair enough.
>> However, we have a hot-spare server which runs our main backoffice  
>> app.
>>  The live version of this server updates our website, and we recently
>> had an issue where the backup box came back up after a power cut with
>> all services running, resulting in two conflicting sets of updates  
>> being
>> applied to the website and much confusion all around.
>> Under those circumstances, it would have been handy to be alerted to
>> the fact that the backup box was now also updating the website; can
>> anyone suggest a way to persuade check_nt to do this, or an  
>> alternative
>> plugin?
>>
>> Thanks,
>> Ian.
>>
>> *********************************
>> Ian Rarity
>> Technical Engineer
>> ESPC (UK) Ltd.
>> T: (44)131 624 8000
>> F: (44)131 624 8509
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>>
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