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Date: Fri, 30 May 2003 09:11:44 -0400
To: Tomcat Users List <tomcat-user@jakarta.apache.org>
Subject: Re: Multiple instances
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References: <515A91294CBCD211B7C500508B8B2BC401301641@nemesis.bmpcoe.org>
From: John Turner <tomcat-user@johnturner.com>
Message-ID: <oprpzllur7xvhn30@mail.aas.com>
In-Reply-To: <515A91294CBCD211B7C500508B8B2BC401301641@nemesis.bmpcoe.org>
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On Fri, 30 May 2003 08:12:26 -0400, Lloyd Meinholz <meinholz@bmpcoe.org> 
wrote:

> I have a wrapper startup script that changes the value of CATALINA_BASE
> before it calls the startup.sh script. Just have the right directories 
> and
> files created in your CATALINA_BASE directory before you call startup.sh.
>
> There are a couple of problems with this that I've found. You have a lot 
> of
> java processes running and if one of them is going haywire, you don't 
> have a
> way of knowing which server instance is bad since they all show up as 
> java
> in the ps -ef output. I'm trying to solve this by having a java_server1,
> java_server2 etc. binaries, but am having some difficulties with that.

If you're using Linux, try putting "--cols=300" in your ps command...then 
you can grep on server.xml or a directory name:

ps -ef --cols=300 | grep java |grep some-string-here-that-means-something- 
to-you

> Also, I've found that if you start more than just a couple of instances
> simultaneously, they all fail. I have about 10 servers that get started 
> in a
> boot script that don't start correctly if you try and start all of them 
> at
> the same time (at least very quickly one after the other). I have to put 
> a
> sleep between each startup call to get them to start correctly.

I wrote a wrapper-wrapper that does this.  It just loops through a list, 
and for each one, makes the appropriate calls with a sleep 5 in between.  
Works perfect for 22 Tomcat instances.

John


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