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From: Darryl Lewis <darryl.lewis@unsw.edu.au>
To: Tomcat Users List <users@tomcat.apache.org>,
        Tomcat Users List
	<users@tomcat.apache.org>
Date: Sun, 20 Mar 2011 22:20:33 +1100
Subject: Re: How to detect down of tomcat.
Thread-Topic: How to detect down of tomcat.
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The other problem will be that tomcat is running, but the application is no=
t 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, "Andr=E9 Warnier" <aw@ice-sa.com> wrote:

The basic problem with "abnormal termination", is that whatever you may thi=
nk 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=3D`tomcat down; date`
>  address=3D"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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