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Posted to users@tomcat.apache.org by JoshInWV <jo...@gmail.com> on 2009/05/14 22:35:02 UTC
Help on tomcat configuration
I am in the process of writing some web based software. Tomcat is my server
I chose for the back end nuts and bolts because the software is written in
Java / JSP. I have an OReilly book on tomcat, but it really lacks on realm
configuration and when talking about j_security_check (but of course so does
servlet spec 2.3)
In a nutshell we designed a program to be installed on a stand alone PC or
network. We finished it and turned it over. They came back to us and said,
well due to our fear of piracy, we now want to put it on a web server and
sell the service :-/. So now the scope of the project shifted by some, but
what we have will run, just needs slightly modified.
Most of what I need to have happen is at the server level. What do I need
to do to have one instance of tomcat running and have multiple copies of the
software running throughout the one server? I know this gets into a realms
configuration issue, but I am not strong on that.
I thought about doing sub-domains with a dedicated instance under each
domain, however, I think that's terribly wasteful.
Any help would be greatly appreciated.
- Josh
I have a few questions if you all can make some time for me to answer them,
I would be most grateful!
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Re: Help on tomcat configuration
Posted by JoshInWV <jo...@gmail.com>.
Actually I am using 6.0.18 as the tomcat version. I'll look up servlet spec
2.5
I've decided to deploy the application on the subdomains and use the main
.com as a signup for the service.
Thank you very much Chris, I really appreciate it!
Also as far as a book goes, what would you suggest? I have O'Reilly's
Tomcat book, but I am less than impressed with it.
Christopher Schultz-2 wrote:
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Josh,
>
> On 5/14/2009 4:35 PM, JoshInWV wrote:
>> I have an OReilly book on tomcat, but it really lacks on realm
>> configuration and when talking about j_security_check (but of course
>> so does servlet spec 2.3)
>
> What Tomcat version are you using? You should probably be reading the
> servlet spec version 2.4 (for TC 5.x) or 2.5 (for TC 6.x).
>
> The best reference is the servlet spec itself. It's surprisingly readable.
>
>> Most of what I need to have happen is at the server level. What do I
>> need to do to have one instance of tomcat running and have multiple
>> copies of the software running throughout the one server?
>
> You can easily deploy the same application multiple times... you just
> need to give them different names. For instance, if you want to deploy
> it on the following URLs:
>
> http://host/name1
> http://host/name2
> http://host/name3
> http://host/name4
>
> ....just copy your WAR file (or webapp directory) several times into
> Tomcat's webapps directory. Name the WAR files name1.war, name2.war,
> etc. or, if you're using directories, name the directories name1, name2,
> etc.
>
> Since you mentioned the servlet spec 2.3, I suspect you are running on
> Tomcat 4.1.x. You should really upgrade to a more recent version,
> honestly. I recently (I suppose over a year ago, now) migrated 4
> separate apps from 4.1.x to 5.5.x and it was no big deal.
>
>> I know this gets into a realms configuration issue, but I am not
>> strong on that.
>
> A <Realm> should be defined within a <Context>, and you should have a
> separate <Context> for each webapp. Tomcat 5.5.x and 6.0.x prefer that
> you define your <Context> elements within META-INF/context.xml within
> your webapp's WAR file (or directory). If you want to use a different
> database user or backend database (or both), just customize each
> webapp's (name1, name2, etc.) context.xml as appropriate.
>
>> I thought about doing sub-domains with a dedicated instance under
>> each domain, however, I think that's terribly wasteful.
>
> It can be, but it can also help you insulate the instances from one
> another: if one client starts making lots of requests, they can only
> max-out the connection capacity of /their/ instance, and not starve
> other customers.
>
>> I have a few questions if you all can make some time for me to answer
>> them, I would be most grateful!
>
> Other questions? Bring 'em on: just post each question under a different
> thread name, instead of repeatedly hijacking your own thread.
>
> - -chris
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> =Kq6Q
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Re: Help on tomcat configuration
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Josh,
On 5/14/2009 4:35 PM, JoshInWV wrote:
> I have an OReilly book on tomcat, but it really lacks on realm
> configuration and when talking about j_security_check (but of course
> so does servlet spec 2.3)
What Tomcat version are you using? You should probably be reading the
servlet spec version 2.4 (for TC 5.x) or 2.5 (for TC 6.x).
The best reference is the servlet spec itself. It's surprisingly readable.
> Most of what I need to have happen is at the server level. What do I
> need to do to have one instance of tomcat running and have multiple
> copies of the software running throughout the one server?
You can easily deploy the same application multiple times... you just
need to give them different names. For instance, if you want to deploy
it on the following URLs:
http://host/name1
http://host/name2
http://host/name3
http://host/name4
....just copy your WAR file (or webapp directory) several times into
Tomcat's webapps directory. Name the WAR files name1.war, name2.war,
etc. or, if you're using directories, name the directories name1, name2,
etc.
Since you mentioned the servlet spec 2.3, I suspect you are running on
Tomcat 4.1.x. You should really upgrade to a more recent version,
honestly. I recently (I suppose over a year ago, now) migrated 4
separate apps from 4.1.x to 5.5.x and it was no big deal.
> I know this gets into a realms configuration issue, but I am not
> strong on that.
A <Realm> should be defined within a <Context>, and you should have a
separate <Context> for each webapp. Tomcat 5.5.x and 6.0.x prefer that
you define your <Context> elements within META-INF/context.xml within
your webapp's WAR file (or directory). If you want to use a different
database user or backend database (or both), just customize each
webapp's (name1, name2, etc.) context.xml as appropriate.
> I thought about doing sub-domains with a dedicated instance under
> each domain, however, I think that's terribly wasteful.
It can be, but it can also help you insulate the instances from one
another: if one client starts making lots of requests, they can only
max-out the connection capacity of /their/ instance, and not starve
other customers.
> I have a few questions if you all can make some time for me to answer
> them, I would be most grateful!
Other questions? Bring 'em on: just post each question under a different
thread name, instead of repeatedly hijacking your own thread.
- -chris
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Version: GnuPG v1.4.9 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
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=Kq6Q
-----END PGP SIGNATURE-----
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Re: Help on tomcat configuration
Posted by venkatesh kumar <ss...@gmail.com>.
Hi,
On Fri, May 15, 2009 at 2:05 AM, JoshInWV <jo...@gmail.com> wrote:
>
> I am in the process of writing some web based software. Tomcat is my
> server
> I chose for the back end nuts and bolts because the software is written in
> Java / JSP. I have an OReilly book on tomcat, but it really lacks on realm
> configuration and when talking about j_security_check (but of course so
> does
> servlet spec 2.3)
>
> In a nutshell we designed a program to be installed on a stand alone PC or
> network. We finished it and turned it over. They came back to us and
> said,
> well due to our fear of piracy, we now want to put it on a web server and
> sell the service :-/. So now the scope of the project shifted by some, but
> what we have will run, just needs slightly modified.
>
> Most of what I need to have happen is at the server level. What do I need
> to do to have one instance of tomcat running and have multiple copies of
> the
> software running throughout the one server? I know this gets into a realms
> configuration issue, but I am not strong on that.
>
> I thought about doing sub-domains with a dedicated instance under each
> domain, however, I think that's terribly wasteful.
>
> Any help would be greatly appreciated.
>
> - Josh
>
> I have a few questions if you all can make some time for me to answer them,
> I would be most grateful!
> --
> View this message in context:
> http://www.nabble.com/Help-on-tomcat-configuration-tp23548536p23548536.html
> Sent from the Tomcat - User mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
--
s.venkatesh kumar