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Posted to users@tomcat.apache.org by bajistaman <ba...@gmail.com> on 2007/09/06 14:28:51 UTC
Tomcat Farm Deployment and Statistics
Is there a way to distribute the deployment of an application through many
tomcat's farm instances in different machines setting a context path that is
different than the war's name?
Is there a way to centrally collect statistics of usage of all of the
tomcat's farm instances?
Thanks,
Johann
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RE: Tomcat Farm Deployment and Statistics
Posted by bajistaman <ba...@gmail.com>.
Have you tried the "Client Deployer Package"?
Johann
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RE: Tomcat Farm Deployment and Statistics
Posted by "Caldarale, Charles R" <Ch...@unisys.com>.
> From: bajistaman [mailto:bajistaman@gmail.com]
> Subject: RE: Tomcat Farm Deployment and Statistics
>
> I was reading about JMX and Tomcat and I wonder if is it
> better (more secure?) to do it at the low level as you
> suggested or by using the JMX API?
I think using JMX would make it more complicated and may well decrease
security since there would be yet another port open into Tomcat; others
may have differing opinions.
However, your reference to JMX did remind me of Lambda Probe
(www.lambdaprobe.org), which is a very useful Tomcat monitoring tool.
I've never tried it in a Tomcat clustering environment, but it does
appear to have some support for that.
- Chuck
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RE: Tomcat Farm Deployment and Statistics
Posted by bajistaman <ba...@gmail.com>.
Thanks Charles, I was reading about JMX and Tomcat and I wonder if is it
better (more secure?) to do it at the low level as you suggested or by using
the JMX API?
Johann
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RE: Tomcat Farm Deployment and Statistics
Posted by "Caldarale, Charles R" <Ch...@unisys.com>.
> From: bajistaman [mailto:bajistaman@gmail.com]
> Subject: Tomcat Farm Deployment and Statistics
>
> Is there a way to distribute the deployment of an application
> through many tomcat's farm instances in different machines
> setting a context path that is different than the war's name?
If you want a path different from the name of the .war file, then the
webapp must be located outside of any <Host> element's appBase
directory. The webapp is then deployed by creating a
conf/Catalina/[host]/[appPath].xml file containing a <Context> element
with an appropriate docBase attribute. (This will override any
META-INF/context.xml file that's inside the webapp.) You'll have to do
this on each Tomcat instance, of course, but the whole process can be
scripted as needed.
> Is there a way to centrally collect statistics of usage of all of the
> tomcat's farm instances?
You got me - I'm a city boy. Filip?
- Chuck
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Re: Tomcat Farm Deployment and Statistics
Posted by Christopher Schultz <ch...@christopherschultz.net>.
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Johann,
bajistaman wrote:
> Is there a way to centrally collect statistics of usage of all of the
> tomcat's farm instances?
How are you distributing the traffic among the Tomcat instances? Cant'
you use a log file from there?
If not, you'll have to either copy log files to a central location, or
rig your loggers to report logging information to a single place.
One idea is to use log4j as your logging mechanism (I'm guessing that
the AccessLogValve or whatever it's called uses the standard logging so
you can set it up to use log4j) and use the syslog appender with a host
other than localhost. Have all your TC instances use syslog to report
logging to one, single system's syslog facility. Then, configure syslog
on that target machine to segregate Tomcat/web log messages to a
particular file.
- -chris
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