[CentOS] Recommendation On Ping And Alert Tool

William A. Mahaffey III wam at HiWAAY.net
Fri Sep 23 12:07:47 UTC 2005


Steven Vishoot wrote:

>--- "William A. Mahaffey III" <wam at HiWAAY.net> wrote:
>
>  
>
>>CentOS mailing list wrote:
>>
>>    
>>
>>>Kennedy Clark wrote:
>>>
>>>      
>>>
>>>>A bit off topic, but I keep looking for an answer
>>>>        
>>>>
>>to this question 
>>    
>>
>>>>and coming up with nothing... so I thought I
>>>>        
>>>>
>>would go to the gurus. :-)
>>    
>>
>>>> 
>>>>Can anyone recommend a good package for pinging
>>>>        
>>>>
>>other devices and 
>>    
>>
>>>>sending an email/alert when they go down?  I'm
>>>>        
>>>>
>>aware of all kinds of 
>>    
>>
>>>>more complex things with GUIs and a zillion other
>>>>        
>>>>
>>bells and whistles 
>>    
>>
>>>>we aren't looking for, but we just want a simple
>>>>        
>>>>
>>tool (could be 
>>    
>>
>>>>daemon or something run from cron) that runs
>>>>        
>>>>
>>every 1 - 5 minutes and 
>>    
>>
>>>>alerts us when stuff disappears.  Would need some
>>>>        
>>>>
>>basic logic like 
>>    
>>
>>>>only sending one email/alert when something goes
>>>>        
>>>>
>>down (vs sending an 
>>    
>>
>>>>email every 1-5 minutes until it comes back up).
>>>>        
>>>>
>>:-)  We need to 
>>    
>>
>>>>avoid a requirement for an X-windows GUI, but a
>>>>        
>>>>
>>web-GUI would 
>>    
>>
>>>>probably be fine (a GUI-less command-line thing
>>>>        
>>>>
>>would probably be best).
>>    
>>
>>>Bash. Here is what I use for monitoring my website
>>>
>>>#!/bin/bash
>>>
>>>URL="http://www.911networks.com"
>>>EMAIL="artsi at fartsi.com"
>>>
>>>lynx -dump "$URL" > /dev/null
>>>if [ $? -ne 0 ]; then
>>>    echo "`date "+%F %T"` - $URL is down" | mail
>>>      
>>>
>>-s "$URL is down" $EMAIL
>>    
>>
>>>fi
>>>
>>>Watch for the wraps and make it executable [chmod
>>>      
>>>
>>7xx]
>>    
>>
>>>      
>>>
>>This is the sort of thing I was going to suggest.
>>You could go 1 better 
>>& have it resubmit itself periodically w/ at(1).
>>Maybe get it to do some 
>>argument parsing so you could pass in the URL,
>>EMAIL, then invoke plural 
>>instances for however many things you want to
>>monitor ....
>>
>>-- 
>>	William A. Mahaffey III
>>
>>    
>>
>---------------------------------------------------------------------
>  
>
>>	Remember, ignorance is bliss, but
>>	willful ignorance is LIBERALISM !!!!
>>
>>_______________________________________________
>>CentOS mailing list
>>CentOS at centos.org
>>http://lists.centos.org/mailman/listinfo/centos
>>
>>    
>>
>
>My question is wouldnt this keep on sending emails all
>the time ping keeps on seeing it is down. I thought
>one of the requirements was once for each occurance? I
>probably am reading this wrong...
>
>Steven
> 
>
>"On the side of the software box, in the 'System Requirements' section, it said 'Requires Windows or better'. So I installed Linux."
>_______________________________________________
>
>  
>

It wouldn't have to. You would probably structure the script to E-mail 
if the device was down & then exit. It would re-submit itself if the 
device were up :-).

-- 
	William A. Mahaffey III
---------------------------------------------------------------------
	Remember, ignorance is bliss, but
	willful ignorance is LIBERALISM !!!!

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