check for crash?

[Israel Brewster]

On Nov 21, 2008, at 10:07 AM, Fernando Rocha wrote:

> Hi Israel,
>
> I think that by the check_process is hard to identify this issue,  
> because as you said the process still running and just stop to work.
>
> How do you know when it crashes?
> Is there some log occurrences?
> Does it gives some errors on the web page?

The applet in question is a status display screen. I know it has  
crashed because a) the data displayed is out of date, and b) it  
doesn't respond to user input. Since it is a passive monitoring  
system, there is no log written. No error is displayed, it just stops  
updating properly. I guess what I was hoping for was that there might  
be some indication I could get from the process list or the like that  
I simply didn't know to look for, rather than an application-specific  
check. Something along the lines of how you can check for a "zombie"  
process by looking at the output of a ps. From the responses I have  
gotten so far, however, this wouldn't appear to be the case. Thanks  
anyway!

-----------------------------------------------
Israel Brewster
Computer Support Technician
Frontier Flying Service Inc.
5245 Airport Industrial Rd
Fairbanks, AK 99709
(907) 450-7250 x293
-----------------------------------------------
>
>
> --
> Fernando Rocha <fernando.rocha at opservices.com.br>
> Analista de Suporte - Operação
> OpServices - Porto Alegre - RS - Brasil
> +55 51 3275.3588
> www.opservices.com.br
> www.opmon.org
>
> ----- "Israel Brewster" <israel at frontierflying.com> wrote:
>
>> I'm wondering if anyone can give me suggestions as to how to  
>> monitor a
>>
>> specific process to make sure it keeps running properly. The specific
>>
>> issue I have is that I have a Java Webstart applet running on OpenBSD
>>
>> 4.4 that, from time to time, randomly crashes. I can't just use
>> check_process (I don't think so, at least) because when it "crashes"
>>
>> the process never actually exits- it just stops working. I have to go
>>
>> in and manually kill it before I can restart it. Does anyone have any
>>
>> thoughts as to how I could check for this situation? I realize this
>> may not strictly be a nagios question, and I apologize to anyone who
>>
>> is bothered by that, but since I would be doing the monitoring with
>> Nagios this seemed the most logical place I could think of to ask.
>> Thanks!
>>
>> -----------------------------------------------
>> Israel Brewster
>> Computer Support Technician
>> Frontier Flying Service Inc.
>> 5245 Airport Industrial Rd
>> Fairbanks, AK 99709
>> (907) 450-7250 x293
>> -----------------------------------------------
>>
>>
>>
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