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Posted to users@tomcat.apache.org by shivanic <sh...@gmail.com> on 2010/10/18 11:38:51 UTC
Common war file and multiple tomcat instances
I have read through the link suggesting not to go for using one physical
location of war for multiple instance of tomcat.
http://www.mail-archive.com/users@tomcat.apache.org/msg73906.html
http://www.mail-archive.com/users@tomcat.apache.org/msg73906.html
My question is : If we have a simple jsp's that use taglib and db - what
could be the possible issues if we use one common location for multiple
tomcat servers?
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RE: Common war file and multiple tomcat instances
Posted by "Caldarale, Charles R" <Ch...@unisys.com>.
> From: shivanic [mailto:shivani.chandna@gmail.com]
> Subject: Re: Common war file and multiple tomcat instances
> That was informative
Note that you must use expanded .war files, due to the reasons André explained previously.
> Could you please confirm what is the disadvantage of
> using the path attribute in the configuration file of
> the application?
It's not a disadvantage - it's illegal. The path attribute is only allowed when the <Context> element is in server.xml, which is strongly discouraged.
- Chuck
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Re: Common war file and multiple tomcat instances
Posted by shivanic <sh...@gmail.com>.
Thanks Chris ! That was informative - Could you please confirm what is the
disadvantage of using the path attribute in the configuration file of the
application?
Regards
Shivani
Christopher Schultz-2 wrote:
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Shivanic,
>
> On 10/18/2010 5:38 AM, shivanic wrote:
>> I have read through the link suggesting not to go for using one physical
>> location of war for multiple instance of tomcat.
>>
>> http://www.mail-archive.com/users@tomcat.apache.org/msg73906.html
>
> Note that this was a warning of using a /network/ share to share WAR
> files. Using a single WAR file with multiple deployments should not be a
> problem, as long as you do things properly. Specifically, use a file in
> CATALINA_BASE/conf/[servicename]/[hostname]/[appname].xml that contains
> a docBase pointing to your WAR file, and does /not/ have a "path"
> attribute set. Then, make sure your WAR file is outside of the Tomcat
> installation directory: otherwise, you risk additional, unintended
> deployments.
>
>> My question is : If we have a simple jsp's that use taglib and db - what
>> could be the possible issues if we use one common location for multiple
>> tomcat servers?
>
> The content of the WAR file is largely irrelevant: it's the location of
> the WAR file that counts. As long as you use local storage, you should
> be fine.
>
> - -chris
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Re: Common war file and multiple tomcat instances
Posted by Christopher Schultz <ch...@christopherschultz.net>.
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Hash: SHA1
Shivanic,
On 10/18/2010 5:38 AM, shivanic wrote:
> I have read through the link suggesting not to go for using one physical
> location of war for multiple instance of tomcat.
>
> http://www.mail-archive.com/users@tomcat.apache.org/msg73906.html
Note that this was a warning of using a /network/ share to share WAR
files. Using a single WAR file with multiple deployments should not be a
problem, as long as you do things properly. Specifically, use a file in
CATALINA_BASE/conf/[servicename]/[hostname]/[appname].xml that contains
a docBase pointing to your WAR file, and does /not/ have a "path"
attribute set. Then, make sure your WAR file is outside of the Tomcat
installation directory: otherwise, you risk additional, unintended
deployments.
> My question is : If we have a simple jsp's that use taglib and db - what
> could be the possible issues if we use one common location for multiple
> tomcat servers?
The content of the WAR file is largely irrelevant: it's the location of
the WAR file that counts. As long as you use local storage, you should
be fine.
- -chris
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Re: Common war file and multiple tomcat instances
Posted by shivanic <sh...@gmail.com>.
The war file is extracted, The application has jsp's and servlets / tag
library usage along with DB connectivity.
DB Connectivity is done through the resource reference in the conf file that
is separate per tomcat instance.
awarnier wrote:
>
> If the multiple tomcat servers are all configured to "unpack WARs", will
> they not all
> start trying to do that at the same time and step on eachother's feet ?
>
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Re: Common war file and multiple tomcat instances
Posted by André Warnier <aw...@ice-sa.com>.
shivanic wrote:
> I have read through the link suggesting not to go for using one physical
> location of war for multiple instance of tomcat.
>
> http://www.mail-archive.com/users@tomcat.apache.org/msg73906.html
> http://www.mail-archive.com/users@tomcat.apache.org/msg73906.html
>
> My question is : If we have a simple jsp's that use taglib and db - what
> could be the possible issues if we use one common location for multiple
> tomcat servers?
>
If the multiple tomcat servers are all configured to "unpack WARs", will they not all
start trying to do that at the same time and step on eachother's feet ?
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