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From André Warnier ...@ice-sa.com>
Subject Re: How to detect down of tomcat.
Date Sun, 20 Mar 2011 16:34:06 GMT
Exactly.
And when you will have done that, you will have done exactly what a Nagios plugin would do.
http://exchange.nagios.org/directory/Plugins


Hide wrote:
> Hi, Darryl.
> 
> I understood that Tomcat cannot output specific words when tomcat 
> terminated abnormally.
> I will write a servlet that outputs specific words. I will write a 
> script to call it periodically. The script outputs error log when 
> specific words are not output.
> 
> Thank you very much.
> 
> ----- Original Message ----- From: "Darryl Lewis" 
> <darryl.lewis@unsw.edu.au>
> To: "Tomcat Users List" <users@tomcat.apache.org>; "Tomcat Users List" 
> <users@tomcat.apache.org>
> Sent: Sunday, March 20, 2011 8:20 PM
> Subject: Re: How to detect down of tomcat.
> 
> 
> The other problem will be that tomcat is running, but the application is 
> not responding. There may be nothing in the logs for this, and this is 
> one of my most common issues.
> In this case, I use some custom scripts to simulate a log in and check 
> for an expected string in the return.
> 
> 
> On 20/03/11 10:11 PM, "André Warnier" <aw@ice-sa.com> wrote:
> 
> The basic problem with "abnormal termination", is that whatever you may 
> think of, may not
> be called, if the termination is really abnormal.
> 
> And also : define "abnormal".
> 
> Hide wrote:
>> Hi, Darryl.
>>
>> Thanks for your advice.
>>
>> My explanation seems to have been bad.
>> I explain it a little more.
>>
>> It is a method to output the information of the abnormal termination in
>> "catalina.log" that I want to know.
>> Would you teach it if you know some method?
>>
>> Thank you.
>>
>> ----- Original Message ----- From: "Darryl Lewis"
>> <darryl.lewis@unsw.edu.au>
>> To: "Tomcat Users List" <users@tomcat.apache.org>
>> Sent: Sunday, March 20, 2011 12:17 PM
>> Subject: Re: How to detect down of tomcat.
>>
>>
>> You could write something similar using windows powershell. Do you have
>> that installed on your server?
>>
>>
>> On 20/03/11 2:14 PM, "Hide" <hide39ne@ob4.aitai.ne.jp> wrote:
>>
>> Hi, Darryl.
>>
>> Thanks for your advice.
>>
>> Your script looks like very useful.
>> But in my case, tomcat is running on Microsoft Windows.
>> I am looking for a method to detect the down of tomcat by log file.
>>
>>
>> ----- Original Message -----
>> From: "Darryl Lewis" <darryl.lewis@unsw.edu.au>
>> To: "Tomcat Users List" <users@tomcat.apache.org>
>> Sent: Sunday, March 20, 2011 12:00 PM
>> Subject: Re: How to detect down of tomcat.
>>
>>
>> Put this in a cronjob to fire every minute
>>
>> #!/bin/sh
>> if [ `ps -ef|grep tomcat|grep -v grep|wc -l` -lt 1 ]
>>  then
>>  subject=`tomcat down; date`
>>  address="me@domain.com"
>>  ps -ef>att.txt
>>  mail -s "$subject" "$addr" -- -fno-reply@yourdomain< att.txt
>> fi
>>
>>
>> Fill in the address with your email address, and you can also pipe an
>> attachment
>>
>> For myself, I have scripts that detects when the service is down, sends
>> me an email, then tries to restart it, then will email
>> if it has managed to recover it. If it can't restart it after 5 minutes,
>> then I get an SMS.
>> In the morning, I can quickly see if it failed overnight, and my beauty
>> rest only gets disturbed in the really bad cases.
>>
>> On 20/03/11 1:38 PM, "Hide" <hide39ne@ob4.aitai.ne.jp> wrote:
>>
>> How to detect down of tomcat.
>>
>> Helo.
>>
>> My environment is tomcat7, java1.6, windows.
>>
>> When process of tomcat terminated abnormally,
>> is there any method or setting that output the abnormal termination to a
>> log file?
>>
>> If there is it, please let me know.
>>
>> tomcat is the premise that is not service of windows, but even service
>> is good.
>>
>> The motive that wants to know such a thing is because I want to detect
>> down of tomcat in  automatically without human operation.
>> I set a file and keyword in a log monitor tool, and it  detects down of
>> tomcat automatically.
>>
>> Thanks for your advice.
>>
>>

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