AW: JSP Precompilation

[Bernhard Slominski]

Maybe there are a few classfiles missing, which are only used with these two
jsps.

Bernhard

> -Ursprüngliche Nachricht-
> Von: Ramnish Kalsi [mailto:[EMAIL PROTECTED]
> Gesendet: Mittwoch, 17. August 2005 20:52
> An: 'Tomcat Users List'
> Betreff: JSP Precompilation
> 
> 
> I am trying to use jasper2 to pre-compile the JSPs as part of 
> build process.
> The compiler is complaining with the message:
> 
> ERROR - the file 'blah/blah/jsp' generated the following 
> general exception:
> java.lang.NullPointerException'
> 
> After spending some time, i realized that the jsp files which 
> had invalid
> usage of tags were the culprits.
> 
> The errors disappeared after tag cleaning. Now this error is 
> only coming for
> 2 files, and i am positive that there is nothing wrong with tags. 
> 
> What could be other possible reasons ?
> 
> Is there any way of configuring the compiler to output 
> detailed stacktrace,
> if it fails at any jsp file compilation.
> 
> Tomcat version is 4.1.
> 
> thanks,
> ramnish.
> 
> 
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Re: Calculating required memory

[Oleg]

Thank you very much for your input gentlemen. Increasing PermGen is a great 
idea, because I do see my server giving me out of memory permgen error at 
least twice a day and now it makes sense why, I was thinking my -Xmx 
settings 1024m should take care of my needs for now and that was wrong, I 
set MaxPermSize=256m and the server seem to be fine for now, keeping my 
fingers crossed. 
 Now regarding shared/lib directory I thought that every application loads 
its own copy of those libraries, but if its only one time load and since all 
my applications are identical copies (only data changes) I might as well 
move all my classes into shared, before I only had struts, hibernate jars 
and so on That wouldnt create any thread safety issues would it? Thanks 
again for your time, this helps a lot!
 Oleg

 On 8/17/05, Peter Crowther <[EMAIL PROTECTED]> wrote: 
> 
> > From: Oleg [mailto:[EMAIL PROTECTED]
> > I am trying to approximate the amount of memory my server
> > will need running
> > tomcat. I understand that a lot depends on how the appication handles
> > resources, however at this point I am trying to figure out
> > what will be the
> > mimimum needed. In my case I have virtual hosting setup, with
> > all hosts
> > sharing the same libraries, so I have struts, hibernate,...
> > all sitting in
> > shared/lib directory of Tomcat. Would I be correct to
> > estimate that Tomcat
> > will atleast need
> >
> > n(number of users/applications) * mb(total size of shared/lib)
> 
> As Chuck has already pointed out, no (but I'm going to try a slightly
> different angle on it :-) ). Each class that is loaded from shared/lib
> will be loaded by the Shared classloader, so you'll only have one copy
> of the class in your JVM. Jars are compressed, so the sizes of the
> loaded classes will be larger than the bytes occupied on disk; but not
> all of the classes from a jar will be loaded, so the sizes will probably
> be smaller. Note, however, that any classes in the webapp's WEB-INF/lib
> *will* be loaded once per webapp. If you have large numbers of
> applications, you may want to put more common libraries in shared/lib,
> and you may also wish to increase the size of the permanent generation
> (PermGen) in the JVM's memory model as this is where the classes are
> stored.
> 
> Your per-session and per-page data will dwarf the space required for
> classes; and, as Chuck pointed out, the only way to find out these sizes
> is to profile the app. This will also make sure that you're not going
> to fall foul of any other performance limits, such as CPU use or disk
> bandwidth.
> 
> - Peter
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Http-status 500 error in Tomcat 4.1

[subi]

Hello All,

I am using Tomcat 4.1. I just started working in it,
 
so this asking may be childish, if so, pls don't
mistake me.

Here is my webapp structure:

1. C:\Program Files\Apache Group\Tomcat 4.1\webapps\testapp\classes 
   -here i have my servlet classes
2. C:\Program Files\Apache Group\Tomcat 4.1\webapps\testapp\jsp
-here i have a sample.htmfile
3. C:\Program Files\Apache Group\Tomcat 4.1\webapps\testapp\WEB-INF 
   -here is the web.xml resides

my web.xml entry is like this:

http://java.sun.com/dtd/web-app_2_3.dtd";>


  TestServlet
  TestServlet

  

  TestServlet
 
/TestServlet



--
the sample.htm has the following entries:




Untitled Document




Hello, Welcome! 

  

  



---

Here is what I done:
1. I started the Tomcat server
2. opened the IE browser and "http://localhost:8080/testapp/jsp/sample.htm";
3. clicked the button which gives the error "HTTP Status 500 -
TestServlet is not found"

Please tell me what is the problem?


-- 
ilu,
subi

Apache2...TC4.1.30...mod_jk odd behavior

[Chris Pat]

Hello
I am getting odd behavior w/TC4.1.30 and the
configurations below.  
www.vhost01.com & www.vhost01.com/hello.jsp work and
as expected
www.vhost02.com & www.vhost02.com/sb/hello.jsp work
NOT as expected.  As implied in the server.xml
snipette the tomcat serving directory is the typical
/webapps/op for vhost01 & /webapps/sb for vhost02.
(Its a perverse mgt story why they are not vhost01 &
vhost02).  The configs are, afaiks, identical
parameterized as needed.  www.vhost02.com/hello.jsp
should work.  Ideas?  tia


httpd.conf

ServerName www.vhost01.com
ServerAdmin [EMAIL PROTECTED]
DocumentRoot D:/Projects01/vhost01/site
ErrorLog D:/Projects01/vhost01/logs/error_log
CustomLog D:/Projects01/vhost01/logs/access_log
common
JkMount /*.jsp connect_cp   
JkMount /servlet/* connect_cp





ServerName www.vhost02.com
ServerAdmin [EMAIL PROTECTED]
DocumentRoot D:/Projects01/vhost02/site
ErrorLog D:/Projects01/vhost02/logs/error_log
CustomLog D:/Projects01/vhost02/logs/access_log
common
JkMount /*.jsp connect_sb
JkMount /servlet/* connect_sb



server.xml
 



 




 

properties
workers.tomcat_home E:\Program Files\Tomcat 4.1
workers.java_home=$JAVA_HOME
ps\
worker.list=ajp12, ajp13, connect_cp, connect_sb
worker.connect_cp.port=8009
worker.connect_cp.host=www.vhost01.com
worker.connect_cp.type=ajp13

worker.connect_sb.port=8009
worker.connect_sb.host=www.vhost02.com
worker.connect_sb.type=ajp13

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Re: Enabling CGI/Perl in Tomcat 5.5.9

[Mark Thomas]

I haven't tested any of this, I am working entirely from memory and
the documentation.

I think you have a security problem.

As your system is configured a request for
http://foo.bar.com/3gflex/3gcgi/somedir/myscript.cgi
will look for the script at
/usr/prod/3gflex/somedir/myscript.cgi
but a request for
http://foo.bar.com/3gflex/somedir/myscript.cgi
will return the content of your script.

You have two options.
1. Move all your cgi scripts under the WEB-INF directory.
2. Use extension mapping (which is now supported) rather than path
mapping.

The easiest fix will depend on how your application is structured.
Extension mapping will look something like:
 
 cgi
 *.cgi
 

Mark

A Madhusudan-A5324C wrote:

Hi,

I am facing some problems with enabling CGI in Tomcat 5.5.9.

I followed the instructions given in the Manual, and renamed the
servlets-cgi.renametojar under jakarta-tomcat-5.5.9\server\lib\ to
servlets-cgi.jar.

Further I modified the web.xml files to uncomment the CGI enabling part.
Here they are


cgi
 
org.apache.catalina.servlets.CGIServlet


  debug
  6


  executable
  /usr/local/bin/perl


  cgiPathPrefix
  /

 5



cgi
/3gcgi/*


My context.xml file points to a directory outside the tomcat dir structure.
It is




WEB-INF/web.xml






The problem I am facing is that whatever perl scripts I have stored under
/usr/prob/3gflex/, does not execute. But any perl script under any directory
under /usr/prob/3gflex/ executes perfectly. The same if copied one level
above fails. The error thrown is given below..

java.lang.StringIndexOutOfBoundsException: String index out of range: -2
java.lang.String.substring(String.java:1480)
java.lang.String.substring(String.java:1447)

org.apache.catalina.servlets.CGIServlet$CGIEnvironment.findCGI(CGIServlet.ja
va:942)

org.apache.catalina.servlets.CGIServlet$CGIEnvironment.setCGIEnvironment(CGI
Servlet.java:1009)

org.apache.catalina.servlets.CGIServlet$CGIEnvironment.(CGIServlet.jav
a:787)
org.apache.catalina.servlets.CGIServlet.doGet(CGIServlet.java:591)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


Can anyone please hep me on this one..

Thanks
Madhusudan

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Re: session problems when using mod_jk (1.2.14) load balancing

[Mott Leroy]

Ok - noted. I changed it. It works without the domain as you noted. Thanks.

Rainer Jung wrote:

That should not work!

The correct way to configure session stickyness is to use jvmRoute (which
you already did) and then giving the workers the same names as the
jvmRoute. That is instead of "bl_worker_dev" use "dev_alexis" and instead
of "bl_worker_noah" use "noah_alexis" as the worker names.

You should check, that the URLs produced by your application include the
";jsessionid=<32Characters>." or - in case you use cookies - the
same info is in your session cookie.

mod_jk then automatically strips the  part from the session
identifier and lloks for a worker of the same name.

You will only need to use the domain attribute in case you have a lot of
tomcat instances and some of them have the sessions replicated, others
not. Then you can give all members of a replication domain the same domain
name and mod_jk will know, that in case the correct worker is down, which
alternatives are good.



Beautiful - worked like a charm. That might take the cake as far as
longest question to quickest, shortest answer goes. ha. Thanks a bunch.

I might have to gripe about doucmentation in a second (nother thread)..

Noah


Edgar Alves wrote:


Try adding these two lines to worker.properties:
worker.bl_worker_dev.domain=dev_alexis
worker.bl_worker_noah.domain=noah_alexis

-- Edgar Alves

Mott Leroy wrote:




Hi -

I'm unable to get mod_jk load balancing working. The usual mod_jk
setup works just fine, but using a load balancing worker however, is
not. [Oddly, my webserver crashed during testing of this, but that
could very well be unrelated]

The problem is with user sessions. The instances (nodes) do not seem
to recognize an already established session with the user and are
creating new sessions. It's possible that is a "session-stickiness"
issue, but it appears like the requests are hitting the same instance,
just not getting the previously established session. As a result, I
can't even reliably login to my application.

I created a session listener for debugging purposes and it reports
-no- destroyed sessions, but plenty of newly created sessions on both
instances that make up the "cluster". The session IDs, I noticed, have
the jvmRoute name attached to them, which should be a good sign.

I have a webserver running Apache (1.3.33), mod_jk (1.2.14), and an
application server running the "cluster" -- 2 instances tomcat
(5.0.28) on different ports.

I added a unique jvmRoute to both instances in the server.xml:



My worker.properties loadbalancer settings:

worker.list=load_balancer_test

worker.load_balancer_test.type=lb
worker.load_balancer_test.balance_workers=bl_worker_dev,bl_worker_noah
worker.load_balancer_test.sticky_session=true
worker.load_balancer_test.sticky_session_force=false

worker.bl_worker_dev.type=ajp13
worker.bl_worker_dev.host=alexis
worker.bl_worker_dev.port=9003
worker.bl_worker_dev.lbfactor=1
worker.bl_worker_dev.socket_keepalive=1
worker.bl_worker_dev.recycle_timeout=300

worker.bl_worker_noah.type=ajp13
worker.bl_worker_noah.host=alexis
worker.bl_worker_noah.port=8063
worker.bl_worker_noah.lbfactor=3
worker.bl_worker_noah.socket_keepalive=1
worker.bl_worker_noah.recycle_timeout=300

Any ideas, things I could try would be much appreciated.

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Re: session problems when using mod_jk (1.2.14) load balancing

[Rainer Jung]

That should not work!

The correct way to configure session stickyness is to use jvmRoute (which
you already did) and then giving the workers the same names as the
jvmRoute. That is instead of "bl_worker_dev" use "dev_alexis" and instead
of "bl_worker_noah" use "noah_alexis" as the worker names.

You should check, that the URLs produced by your application include the
";jsessionid=<32Characters>." or - in case you use cookies - the
same info is in your session cookie.

mod_jk then automatically strips the  part from the session
identifier and lloks for a worker of the same name.

You will only need to use the domain attribute in case you have a lot of
tomcat instances and some of them have the sessions replicated, others
not. Then you can give all members of a replication domain the same domain
name and mod_jk will know, that in case the correct worker is down, which
alternatives are good.

> Beautiful - worked like a charm. That might take the cake as far as
> longest question to quickest, shortest answer goes. ha. Thanks a bunch.
>
> I might have to gripe about doucmentation in a second (nother thread)..
>
> Noah
>
>
> Edgar Alves wrote:
>> Try adding these two lines to worker.properties:
>> worker.bl_worker_dev.domain=dev_alexis
>> worker.bl_worker_noah.domain=noah_alexis
>>
>> -- Edgar Alves
>>
>> Mott Leroy wrote:
>>
>>
>>>Hi -
>>>
>>>I'm unable to get mod_jk load balancing working. The usual mod_jk
>>>setup works just fine, but using a load balancing worker however, is
>>>not. [Oddly, my webserver crashed during testing of this, but that
>>>could very well be unrelated]
>>>
>>>The problem is with user sessions. The instances (nodes) do not seem
>>>to recognize an already established session with the user and are
>>>creating new sessions. It's possible that is a "session-stickiness"
>>>issue, but it appears like the requests are hitting the same instance,
>>>just not getting the previously established session. As a result, I
>>>can't even reliably login to my application.
>>>
>>>I created a session listener for debugging purposes and it reports
>>>-no- destroyed sessions, but plenty of newly created sessions on both
>>>instances that make up the "cluster". The session IDs, I noticed, have
>>>the jvmRoute name attached to them, which should be a good sign.
>>>
>>>I have a webserver running Apache (1.3.33), mod_jk (1.2.14), and an
>>>application server running the "cluster" -- 2 instances tomcat
>>>(5.0.28) on different ports.
>>>
>>>I added a unique jvmRoute to both instances in the server.xml:
>>>
>>>
>>>
>>>My worker.properties loadbalancer settings:
>>>
>>>worker.list=load_balancer_test
>>>
>>>worker.load_balancer_test.type=lb
>>>worker.load_balancer_test.balance_workers=bl_worker_dev,bl_worker_noah
>>>worker.load_balancer_test.sticky_session=true
>>>worker.load_balancer_test.sticky_session_force=false
>>>
>>>worker.bl_worker_dev.type=ajp13
>>>worker.bl_worker_dev.host=alexis
>>>worker.bl_worker_dev.port=9003
>>>worker.bl_worker_dev.lbfactor=1
>>>worker.bl_worker_dev.socket_keepalive=1
>>>worker.bl_worker_dev.recycle_timeout=300
>>>
>>>worker.bl_worker_noah.type=ajp13
>>>worker.bl_worker_noah.host=alexis
>>>worker.bl_worker_noah.port=8063
>>>worker.bl_worker_noah.lbfactor=3
>>>worker.bl_worker_noah.socket_keepalive=1
>>>worker.bl_worker_noah.recycle_timeout=300
>>>
>>>Any ideas, things I could try would be much appreciated.
>>>
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>>>
>>>
>>>
>>>
>>
>>
>>
>>
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Re: What to do if you receive a 554 delivery error when posting

[Mark Thomas]

All,

I believe I have tracked down and fixed the root cause of this issue.

If anyone is still receiving these messages or starts to receive them 
in the future please forward them as per below.


Mark

Mark Thomas wrote:
If you receive a 554 delivery failure message please forward the message 
*and the headers* to [EMAIL PROTECTED] or 
[EMAIL PROTECTED]


The headers are particularly important. 
http://www1.physics.ox.ac.uk/help/spam.html contains information on how 
to make sure the mail you send me includes the headers. Although this 
page refers to spam messages I should stress that I do not believe the 
554 messages are spam.



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JSP Precompilation

[Ramnish Kalsi]

I am trying to use jasper2 to pre-compile the JSPs as part of build process.
The compiler is complaining with the message:

ERROR - the file 'blah/blah/jsp' generated the following general exception:
java.lang.NullPointerException'

After spending some time, i realized that the jsp files which had invalid
usage of tags were the culprits.

The errors disappeared after tag cleaning. Now this error is only coming for
2 files, and i am positive that there is nothing wrong with tags. 

What could be other possible reasons ?

Is there any way of configuring the compiler to output detailed stacktrace,
if it fails at any jsp file compilation.

Tomcat version is 4.1.

thanks,
ramnish.


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mod_jk documentation

[Mott Leroy]

Before I go gripe too, too much, let me just say that the mod_jk 
documentation has improved immensely since I start looking into it. Some 
of it might be simplied by the fact that I no longer consider jk2 in the 
picture which seemed to be adding some confusion.


I don't know who is responsible for updating the documentation, so 
thought I'd post here.


The documentation that I'm referring to is at:

http://jakarta.apache.org/tomcat/connectors-doc/index.html

load balancing page:
Well, the load balancing page is empty, which is ok, but a link to the 
majority of load balancing explanation on the worker.properties page 
would be nice.


"domain" property for a worker.
I had to use the "domain" property on a worker to get load balancing 
working, which corresponds to the jvmRoute. I didn't see any mention of 
jvmRoute or "domain" anywhere however in either the load balancing 
section or the general worker properties.


finally, and this may have annoyed me more than anything else -
all throughout the load balancing documentation there are red, bolded 
lines like "These workers should not appear in the worker.list 
property!" in reference to "balance_workers". But then in the example, 
they do exactly what they said should NOT be done:

(bottom of this page)
http://jakarta.apache.org/tomcat/connectors-doc/howto/workers.html

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Re: session problems when using mod_jk (1.2.14) load balancing

[Mott Leroy]

Beautiful - worked like a charm. That might take the cake as far as 
longest question to quickest, shortest answer goes. ha. Thanks a bunch.


I might have to gripe about doucmentation in a second (nother thread)..

Noah


Edgar Alves wrote:

Try adding these two lines to worker.properties:
worker.bl_worker_dev.domain=dev_alexis
worker.bl_worker_noah.domain=noah_alexis

-- Edgar Alves

Mott Leroy wrote:



Hi -

I'm unable to get mod_jk load balancing working. The usual mod_jk
setup works just fine, but using a load balancing worker however, is
not. [Oddly, my webserver crashed during testing of this, but that
could very well be unrelated]

The problem is with user sessions. The instances (nodes) do not seem
to recognize an already established session with the user and are
creating new sessions. It's possible that is a "session-stickiness"
issue, but it appears like the requests are hitting the same instance,
just not getting the previously established session. As a result, I
can't even reliably login to my application.

I created a session listener for debugging purposes and it reports
-no- destroyed sessions, but plenty of newly created sessions on both
instances that make up the "cluster". The session IDs, I noticed, have
the jvmRoute name attached to them, which should be a good sign.

I have a webserver running Apache (1.3.33), mod_jk (1.2.14), and an
application server running the "cluster" -- 2 instances tomcat
(5.0.28) on different ports.

I added a unique jvmRoute to both instances in the server.xml:



My worker.properties loadbalancer settings:

worker.list=load_balancer_test

worker.load_balancer_test.type=lb
worker.load_balancer_test.balance_workers=bl_worker_dev,bl_worker_noah
worker.load_balancer_test.sticky_session=true
worker.load_balancer_test.sticky_session_force=false

worker.bl_worker_dev.type=ajp13
worker.bl_worker_dev.host=alexis
worker.bl_worker_dev.port=9003
worker.bl_worker_dev.lbfactor=1
worker.bl_worker_dev.socket_keepalive=1
worker.bl_worker_dev.recycle_timeout=300

worker.bl_worker_noah.type=ajp13
worker.bl_worker_noah.host=alexis
worker.bl_worker_noah.port=8063
worker.bl_worker_noah.lbfactor=3
worker.bl_worker_noah.socket_keepalive=1
worker.bl_worker_noah.recycle_timeout=300

Any ideas, things I could try would be much appreciated.

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Re: session problems when using mod_jk (1.2.14) load balancing

[Edgar Alves]

Try adding these two lines to worker.properties:
worker.bl_worker_dev.domain=dev_alexis
worker.bl_worker_noah.domain=noah_alexis

-- Edgar Alves

Mott Leroy wrote:

> Hi -
>
> I'm unable to get mod_jk load balancing working. The usual mod_jk
> setup works just fine, but using a load balancing worker however, is
> not. [Oddly, my webserver crashed during testing of this, but that
> could very well be unrelated]
>
> The problem is with user sessions. The instances (nodes) do not seem
> to recognize an already established session with the user and are
> creating new sessions. It's possible that is a "session-stickiness"
> issue, but it appears like the requests are hitting the same instance,
> just not getting the previously established session. As a result, I
> can't even reliably login to my application.
>
> I created a session listener for debugging purposes and it reports
> -no- destroyed sessions, but plenty of newly created sessions on both
> instances that make up the "cluster". The session IDs, I noticed, have
> the jvmRoute name attached to them, which should be a good sign.
>
> I have a webserver running Apache (1.3.33), mod_jk (1.2.14), and an
> application server running the "cluster" -- 2 instances tomcat
> (5.0.28) on different ports.
>
> I added a unique jvmRoute to both instances in the server.xml:
> 
> 
>
> My worker.properties loadbalancer settings:
>
> worker.list=load_balancer_test
>
> worker.load_balancer_test.type=lb
> worker.load_balancer_test.balance_workers=bl_worker_dev,bl_worker_noah
> worker.load_balancer_test.sticky_session=true
> worker.load_balancer_test.sticky_session_force=false
>
> worker.bl_worker_dev.type=ajp13
> worker.bl_worker_dev.host=alexis
> worker.bl_worker_dev.port=9003
> worker.bl_worker_dev.lbfactor=1
> worker.bl_worker_dev.socket_keepalive=1
> worker.bl_worker_dev.recycle_timeout=300
>
> worker.bl_worker_noah.type=ajp13
> worker.bl_worker_noah.host=alexis
> worker.bl_worker_noah.port=8063
> worker.bl_worker_noah.lbfactor=3
> worker.bl_worker_noah.socket_keepalive=1
> worker.bl_worker_noah.recycle_timeout=300
>
> Any ideas, things I could try would be much appreciated.
>
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>
>
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Re: persistence with sessions & distributable attribute

[Christoph Kutzinski]

I didn't say that distributables don't have to implement 
java.io.Serializable. In fact they have to.
I just had the impression (from your first post) that you thought by 
putting an non-serializable Attribute into a HashMap, the attribute 
would become serializable, too.


Example:
If you want to put a java.net.Socket into the session the session won't 
be distributable because Socket isn't Serializable.
But if you put the Socket object into a java.util.HashMap (which 
implements Serializable) and put the map into the session, the session 
still wouldn't be distributable. This is because to serialize the 
session the HashMap and ALL its fields must be serialized. Because the 
Socket object is now part of the map, this won't work.


Serializable is just a "marker" interface, i.e. the class just 
"declares" that is it serializable.

You should read the Java Tutorial (somewhere in the JDK docs).
There is explained what Serialization really means.

Christoph

Lintang JP wrote:
I'm referring to this document on : 
http://www.onjava.com/pub/a/onjava/2004/04/14/clustering.html?page=2
 The words "Serializable" here would mean for session replication, right ? 
CMIIW.
 On 8/17/05, Christoph Kutzinski <[EMAIL PROTECTED]> wrote: 


Hi Nishant,

where did you read that  will *enforce* serializability?
AFAIK  "only" means that your sessions can be distributed
to different tomcat nodes (i.e. a cluster). It doesn't enforce anything,
you have to make sure that your session attributes are serializable by
yourself.

I've done this for my testing environment with a SessionListener:

public class SessionListener implements HttpSessionListener,
HttpSessionAttributeListener {

private ObjectOutputStream stream = new ObjectOutputStream(new
OutputStream() {
public void write(int b) {}
});

public void attributeAdded(HttpSessionBindingEvent evt) {

if (LOCAL_DEBUG) {
// try to serialize attribute
Object o = evt.getValue();
synchronized (stream) {
try {
stream.writeObject(o);
} catch (IOException e) {
System.err.println(evt.getName() + " is not serializable: " +
e.getMessage());
e.printStackTrace();
}
}
}
}

...
}

I disable LOCAL_DEBUG in the production environment, because trying to
serialize every attribute is probably to expensive under heavy load.


@Lintang:

That wouldn't help any. If you put your attributes (which are not
serializable) into a HashMap (which CAN (!) be serializable) the
resulting object (map + attribute) still wouldn't be serializable.
Serializable is more than just implementing the java.io.Serializable
interface.


greetings,

Christoph




Lintang JP wrote:


hi Nishant,
You might want to put all your session variable inside HashMap or other
datatypes that implements Serializable, rather than put it just in a 


single

variable. Refer to the javadocs, what are those Serializable data types 


are.


Or maybe you can build your own class with something like this :
public class StoredSessionValue implements Serializable {
// your session variable goes here
// your setter and getter method for those variables goes here
}

You did right on your  tags.
On 8/17/05, Nishant Deshpande <[EMAIL PROTECTED]> wrote:



Hoping for some help from the tomcat experts on this list.

I want to ensure all objects stored in sessions are serializable.

I read that I can put the  tag in my web.xml file to
'enforce' this.

But I don't see any enforcing happening. I assumed it would throw
exceptions at runtime when I did 'setAttribute("xxx",
SomeNonSerializableObject)'.

I have put 'distributable' in

web.xml:  ...  ... 

I also have the following in server.xml:











Am I missing something? How is the serializability enforced?

Also another question: the serialization does not happen in the
directory i specify for Store above, rather it happens in the
$CATALINA_HOME/work/Catalina/* directories. Any ideas about this one?

Thanks,

Nishant

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session problems when using mod_jk (1.2.14) load balancing

[Mott Leroy]

Hi -

I'm unable to get mod_jk load balancing working. The usual mod_jk setup 
works just fine, but using a load balancing worker however, is not. 
[Oddly, my webserver crashed during testing of this, but that could very 
well be unrelated]


The problem is with user sessions. The instances (nodes) do not seem to 
recognize an already established session with the user and are creating 
new sessions. It's possible that is a "session-stickiness" issue, but it 
appears like the requests are hitting the same instance, just not 
getting the previously established session. As a result, I can't even 
reliably login to my application.


I created a session listener for debugging purposes and it reports -no- 
destroyed sessions, but plenty of newly created sessions on both 
instances that make up the "cluster". The session IDs, I noticed, have 
the jvmRoute name attached to them, which should be a good sign.


I have a webserver running Apache (1.3.33), mod_jk (1.2.14), and an 
application server running the "cluster" -- 2 instances tomcat (5.0.28) 
on different ports.


I added a unique jvmRoute to both instances in the server.xml:



My worker.properties loadbalancer settings:

worker.list=load_balancer_test

worker.load_balancer_test.type=lb
worker.load_balancer_test.balance_workers=bl_worker_dev,bl_worker_noah
worker.load_balancer_test.sticky_session=true
worker.load_balancer_test.sticky_session_force=false

worker.bl_worker_dev.type=ajp13
worker.bl_worker_dev.host=alexis
worker.bl_worker_dev.port=9003
worker.bl_worker_dev.lbfactor=1
worker.bl_worker_dev.socket_keepalive=1
worker.bl_worker_dev.recycle_timeout=300

worker.bl_worker_noah.type=ajp13
worker.bl_worker_noah.host=alexis
worker.bl_worker_noah.port=8063
worker.bl_worker_noah.lbfactor=3
worker.bl_worker_noah.socket_keepalive=1
worker.bl_worker_noah.recycle_timeout=300

Any ideas, things I could try would be much appreciated.

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Re: persistence with sessions & distributable attribute

[Lintang JP]

I'm referring to this document on : 
http://www.onjava.com/pub/a/onjava/2004/04/14/clustering.html?page=2
 The words "Serializable" here would mean for session replication, right ? 
CMIIW.
 On 8/17/05, Christoph Kutzinski <[EMAIL PROTECTED]> wrote: 
> 
> Hi Nishant,
> 
> where did you read that  will *enforce* serializability?
> AFAIK  "only" means that your sessions can be distributed
> to different tomcat nodes (i.e. a cluster). It doesn't enforce anything,
> you have to make sure that your session attributes are serializable by
> yourself.
> 
> I've done this for my testing environment with a SessionListener:
> 
> public class SessionListener implements HttpSessionListener,
> HttpSessionAttributeListener {
> 
> private ObjectOutputStream stream = new ObjectOutputStream(new
> OutputStream() {
> public void write(int b) {}
> });
> 
> public void attributeAdded(HttpSessionBindingEvent evt) {
> 
> if (LOCAL_DEBUG) {
> // try to serialize attribute
> Object o = evt.getValue();
> synchronized (stream) {
> try {
> stream.writeObject(o);
> } catch (IOException e) {
> System.err.println(evt.getName() + " is not serializable: " +
> e.getMessage());
> e.printStackTrace();
> }
> }
> }
> }
> 
> ...
> }
> 
> I disable LOCAL_DEBUG in the production environment, because trying to
> serialize every attribute is probably to expensive under heavy load.
> 
> 
> @Lintang:
> 
> That wouldn't help any. If you put your attributes (which are not
> serializable) into a HashMap (which CAN (!) be serializable) the
> resulting object (map + attribute) still wouldn't be serializable.
> Serializable is more than just implementing the java.io.Serializable
> interface.
> 
> 
> greetings,
> 
> Christoph
> 
> 
> 
> 
> Lintang JP wrote:
> > hi Nishant,
> > You might want to put all your session variable inside HashMap or other
> > datatypes that implements Serializable, rather than put it just in a 
> single
> > variable. Refer to the javadocs, what are those Serializable data types 
> are.
> > Or maybe you can build your own class with something like this :
> > public class StoredSessionValue implements Serializable {
> > // your session variable goes here
> > // your setter and getter method for those variables goes here
> > }
> >
> > You did right on your  tags.
> > On 8/17/05, Nishant Deshpande <[EMAIL PROTECTED]> wrote:
> >
> >>Hoping for some help from the tomcat experts on this list.
> >>
> >>I want to ensure all objects stored in sessions are serializable.
> >>
> >>I read that I can put the  tag in my web.xml file to
> >>'enforce' this.
> >>
> >>But I don't see any enforcing happening. I assumed it would throw
> >>exceptions at runtime when I did 'setAttribute("xxx",
> >>SomeNonSerializableObject)'.
> >>
> >>I have put 'distributable' in
> >>
> >>web.xml:  ...  ... 
> >>
> >>I also have the following in server.xml:
> >>
> >>
> >>
> >> >>reloadable="true" debug="1"/>
> >> >>pathname="/cv/data/tmp" debug="5" saveOnRestart="true"
> >>distributable="true">
> >> >>directory="/cv/data/tmp"
> >>debug="5"/>
> >>
> >>
> >>
> >>
> >>
> >>Am I missing something? How is the serializability enforced?
> >>
> >>Also another question: the serialization does not happen in the
> >>directory i specify for Store above, rather it happens in the
> >>$CATALINA_HOME/work/Catalina/* directories. Any ideas about this one?
> >>
> >>Thanks,
> >>
> >>Nishant
> >>
> >>-
> >>To unsubscribe, e-mail: [EMAIL PROTECTED]
> >>For additional commands, e-mail: [EMAIL PROTECTED]
> >>
> >>
> >
> >
> >
> 
> 
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
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> 
> 


-- 
---
http://www.psychotazkia.or.id

RE: how to delete log files (not append) ?

[Marius Hanganu]

You can gain more control over Tomcat's logging process by using a
log4j.properties file. Follow the instructions at

http://jakarta.apache.org/tomcat/tomcat-5.5-doc/logging.html

For generating the log file each time you restart the server, add to the
log4j.properties file a new one:

log4j.appender.R.append = false

Regards,
Marius

-Original Message-
From: Ben Anderson [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, August 17, 2005 5:34 PM
To: Tomcat Users List
Subject: how to delete log files (not append) ?

Hi,
Hopefully this is an easy one...
I'm running tomcat 4.1.31 and would like to have the log files delete
each time I restart tomcat.  Currently it's just appending to the log
files.  Here's a snippet of my server.xml is that helps:



  





  

  

  






Any ideas?
Thanks,
Ben

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how to delete log files (not append) ?

[Ben Anderson]

Hi,
Hopefully this is an easy one...
I'm running tomcat 4.1.31 and would like to have the log files delete
each time I restart tomcat.  Currently it's just appending to the log
files.  Here's a snippet of my server.xml is that helps:



  





  

  

  






Any ideas?
Thanks,
Ben

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Re: webapp loading order...

[Brian Cook]

Well Tomcat is not likely to do this for you so you would probably need 
to structure the app2 to wait for a trigger from app1.  You could have 
app1 POST to a servlet in app2 and have that be the trigger for the 
dependent steps.  Or have app1 write to a file that app2 will poll until 
it sees a trigger value it is set to look for.




Joe R. Lindsay wrote:

You may be right in a perfect world, but well... I don't think
we'll get there this week.
 
I have a 3rd party app that I am dependent on and I'd prefer

to avoid the cost of rmi across multiple Tomcat instances.
 
I don't give up easily so I am going to try to use the Tomcat

manager app and just script the starting and stopping of applications
rather than leave that to the vagaries of Tomcat.  I am sure to find
this imperfect but being an old ops guy, but control feels more
deterministic to me...and I've enough datacenter surprise for this
life.
 
If anyone has tried this and gone down in flames, let me know

or just have sympathy for me ;)
 
 


Joe Lindsay
email: [EMAIL PROTECTED]

 
 
 




From: QM [mailto:[EMAIL PROTECTED]
Sent: Tue 8/16/2005 5:30 PM
To: Tomcat Users List
Subject: Re: webapp loading order...



On Tue, Aug 16, 2005 at 03:23:16PM -0700, Joe R. Lindsay wrote:
: We have two webapps that communicate via jndi and
: we need to have app2 wait for app1 to load before continuing.
: Is there a way to force the order in which the webapps
: are started?

You could run the apps in separate Tomcat instances.  In that case, you
would explicitly define load order: the start script would start app1 in
instance1, then app2 i instance2.

That said, the spec doesn't cover this, as well it shouldn't -- apps should
be fairly self-sufficient such that load order is irrelevant.

-QM

--

software   -- http://www.brandxdev.net/
tech news  -- http://www.RoarNetworX.com/
code scan  -- http://www.JxRef.org/

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--
Brian Cook
Digital Services Analyst
Print Time Inc.
[EMAIL PROTECTED]
913.345.8900

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RE: Multiple virtual hosts NEWBIE (UNCLASSIFIED)

[Samara, Fadi N Mr ACSIM/ASPEX]

Classification:  UNCLASSIFIED 
Caveats: NONE

Thanks for all your help. 

-Original Message-
From: Parsons Technical Services [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, August 17, 2005 10:21 AM
To: Tomcat Users List
Subject: Re: Multiple virtual hosts NEWBIE (UNCLASSIFIED)

Start here:

http://jakarta.apache.org/tomcat/tomcat-5.5-doc/config/engine.html

Then read the link for host. Simply put, for each website put a host element
in for that site. But make sure you understand the default host.

Doug


- Original Message -
From: "Hassan Schroeder" <[EMAIL PROTECTED]>
To: "Tomcat Users List" 
Sent: Wednesday, August 17, 2005 10:01 AM
Subject: Re: Multiple virtual hosts NEWBIE (UNCLASSIFIED)


>
>> I appreciate your input.  I went onto the site and I can't seem to find 
>> what
>> I need.
>> Could anyone please supply me with the URL of a reference manual ? I am
>> using version 5.5.8
>
> 
>
> Good luck,
> -- 
> Hassan Schroeder - [EMAIL PROTECTED]
> Webtuitive Design ===  (+1) 408-938-0567   === http://webtuitive.com
>
>   dream.  code.
>
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
> 



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Classification:  UNCLASSIFIED 
Caveats: NONE


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Re: Multiple virtual hosts NEWBIE (UNCLASSIFIED)

[Parsons Technical Services]

Start here:

http://jakarta.apache.org/tomcat/tomcat-5.5-doc/config/engine.html

Then read the link for host. Simply put, for each website put a host element 
in for that site. But make sure you understand the default host.


Doug


- Original Message - 
From: "Hassan Schroeder" <[EMAIL PROTECTED]>

To: "Tomcat Users List" 
Sent: Wednesday, August 17, 2005 10:01 AM
Subject: Re: Multiple virtual hosts NEWBIE (UNCLASSIFIED)




I appreciate your input.  I went onto the site and I can't seem to find 
what

I need.
Could anyone please supply me with the URL of a reference manual ? I am
using version 5.5.8




Good luck,
--
Hassan Schroeder - [EMAIL PROTECTED]
Webtuitive Design ===  (+1) 408-938-0567   === http://webtuitive.com

  dream.  code.



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RE: TomCat 5.5.9 - 8443

[Paul Kimbrel]

Well, I don't know of any trusted certificate authorities that operate
for free, but GoDaddy.com offers them for much less than Verisign (to
the tune of $30/year rather than $350/year).

On 8/17/2005, "Tom Spence" <[EMAIL PROTECTED]> wrote:

Now TomCat 5.5.9 can run with 8443 that I am so happy but need to have a
certificate. I don't have any certificate so is there anyway for us to
get free instead of pay to verisign?

Paul Kimbrel <[EMAIL PROTECTED]> wrote:
I've only used keytool - and it worked like a charm for me.

-Original Message-
From: Tom Spence [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 16, 2005 9:23 AM
To: Tomcat Users List
Subject: Re: TomCat 5.5.9 - 8443

Can I use ikeyman or keytool or both?

Cuz, I need to use SSL like 8443 so bad...

Paul Kimbrel
wrote:
Something I forgot to mention. When you are generating your certificate,
it
will ask for your first and last name. Enter the name of the server your
appliation will be running on. In the case of development - this is usally
"localhost". Otherwise, the certificate will be rejected when your
website
loads.

--PK

On 8/15/2005, "[EMAIL PROTECTED]"

wrote:

>It sounds like you need to set up an SSL certificate for Java. Here's a
>site that outlines how to do this:
>
>http://jasigch.princeton.edu:9000/display/CAS/Solving+SSL+issues
>
>To use this example, make sure you have your "JAVA_HOME" environment
>variable set properly (or replace it in the example with the
>appropriate value). Also, the example references "%FILE_NAME%". Don't
>use this - in all the other places in the example, it uses "server.crt"
>- use that instead of the FILE_NAME variable. And finally, it will
>still pop up and ask you for the keystore pass code. Just enter "changeit".
>And don't change it - until you've gotten down the road and figure out
>how all that works. I tried it once, and things got reallys screwed up.
>
>But once, you get that up and running, you should be gold!
>
>--PK
>
>On 8/15/2005, "Tom Spence" wrote:
>
>> I can open
>>
>> http://localhost:8080
>>
>> but, can't open
>>
>> https://localhost:8443
>>
>> Any idea why?
>>
>> Of course I did uncomment at 8443 area in server.xml and set up by >
using keytool. Nothing happened.
>>
>>
>>
>> (__[TomCigar]___~~~
>>
>
>-
>To unsubscribe, e-mail: [EMAIL PROTECTED]
>For additional commands, e-mail: [EMAIL PROTECTED]
>
>

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(__[TomCigar]___~~~




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(__[TomCigar]___~~~

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Re: Multiple virtual hosts NEWBIE (UNCLASSIFIED)

[Hassan Schroeder]

I appreciate your input.  I went onto the site and I can't seem to find what
I need.
Could anyone please supply me with the URL of a reference manual ? I am
using version 5.5.8




Good luck,
--
Hassan Schroeder - [EMAIL PROTECTED]
Webtuitive Design ===  (+1) 408-938-0567   === http://webtuitive.com

  dream.  code.



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RE: TomCat 5.5.9 - 8443

[Tom Spence]

Now TomCat 5.5.9 can run with 8443 that I am so happy but need to have a 
certificate.  I don't have any certificate so is there anyway for us to get 
free instead of pay to verisign?

Paul Kimbrel <[EMAIL PROTECTED]> wrote:
I've only used keytool - and it worked like a charm for me. 

-Original Message-
From: Tom Spence [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, August 16, 2005 9:23 AM
To: Tomcat Users List
Subject: Re: TomCat 5.5.9 - 8443

Can I use ikeyman or keytool or both?

Cuz, I need to use SSL like 8443 so bad...

Paul Kimbrel 
wrote:
Something I forgot to mention. When you are generating your certificate, it
will ask for your first and last name. Enter the name of the server your
appliation will be running on. In the case of development - this is usally
"localhost". Otherwise, the certificate will be rejected when your website
loads.

--PK

On 8/15/2005, "[EMAIL PROTECTED]"

wrote:

>It sounds like you need to set up an SSL certificate for Java. Here's a 
>site that outlines how to do this:
>
>http://jasigch.princeton.edu:9000/display/CAS/Solving+SSL+issues
>
>To use this example, make sure you have your "JAVA_HOME" environment 
>variable set properly (or replace it in the example with the 
>appropriate value). Also, the example references "%FILE_NAME%". Don't 
>use this - in all the other places in the example, it uses "server.crt" 
>- use that instead of the FILE_NAME variable. And finally, it will 
>still pop up and ask you for the keystore pass code. Just enter "changeit".
>And don't change it - until you've gotten down the road and figure out 
>how all that works. I tried it once, and things got reallys screwed up.
>
>But once, you get that up and running, you should be gold!
>
>--PK
>
>On 8/15/2005, "Tom Spence" wrote:
>
>> I can open
>> 
>> http://localhost:8080
>> 
>> but, can't open
>> 
>> https://localhost:8443
>> 
>> Any idea why?
>> 
>> Of course I did uncomment at 8443 area in server.xml and set up by >
using keytool. Nothing happened.
>> 
>> 
>> 
>> (__[TomCigar]___~~~
>> 
>
>-
>To unsubscribe, e-mail: [EMAIL PROTECTED]
>For additional commands, e-mail: [EMAIL PROTECTED]
>
>

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(__[TomCigar]___~~~ 




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(__[TomCigar]___~~~ 

RE: Multiple virtual hosts NEWBIE (UNCLASSIFIED)

[Samara, Fadi N Mr ACSIM/ASPEX]

Classification:  UNCLASSIFIED 
Caveats: NONE

Hassan, 

I appreciate your input.  I went onto the site and I can't seem to find what
I need.
Could anyone please supply me with the URL of a reference manual ? I am
using version 5.5.8

Thanks in advance. 

-Original Message-
From: Hassan Schroeder [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, August 17, 2005 9:23 AM
To: Tomcat Users List
Subject: Re: Multiple virtual hosts NEWBIE (UNCLASSIFIED)


> The question is how am I gonna host these two sites on the same tomcat 
> instance ? Is this done through tomcat ? Is it even possible ?
> The hosting company supports having multiple domains under one main
domain.
> 
> Any suggestions ?

Yes -- read the excellent Tomcat Configuration reference for the version of
Tomcat you're running.

Also, you may find the learning curve shorter if you install that version on
your desktop system to experiment with...

FWIW!
--
Hassan Schroeder - [EMAIL PROTECTED]
Webtuitive Design ===  (+1) 408-938-0567   === http://webtuitive.com

   dream.  code.



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Classification:  UNCLASSIFIED 
Caveats: NONE


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Re: Re: Apache and Tomcat on separate hosts?

[Jeff Schroeder]

>> As I know, mod_jk2 project is no longer maintained so it's better to switch 
>> to mod_jk.

With our java apps, mod_jk has an issue that causes apache to crash every 3-4 
days. mod_jk2 does not, so it's doubtful we will be changing.

Jeff Schroeder
Web Administrator
Comair, Inc.



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RE: Apache and Tomcat on separate hosts?

[Raghupathy,Gurumoorthy]

Try ...

In the workers2.properties

Change
host=ipaddressoftheremotemachine

Regards
Guru

-Original Message-
From: Jeff Schroeder [mailto:[EMAIL PROTECTED] 
Sent: 17 August 2005 14:17
To: tomcat-user@jakarta.apache.org
Subject: Apache and Tomcat on separate hosts?


I finally got Apache2 + mod_jk2 + tomcat 4.1 working with tomcat doing
vhosting on my laptop for development. The management said that is great
that I should now roll it over to the dev servers before putting it into
production.

I started setting up everything and was down to creating the vhost in
httpd.conf when I realized one fatal problem, Apache and Tomcat are on 2
separate servers. The way that I understand it, Apache finds a jsp page in
it's docroot and if the host is in workers2.properties, it gets handed over
to tomcat. 

If the webapp is not on the same box, how do you "let" apache find it to
hand over to tomcat? My first thought was NFS, but the change control board
frowns on any sort of filesharing among the servers. It's kind of important
to get this properly working, is there any other way? Thanks.

Jeff Schroeder
Web Administrator
Comair, Inc.



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Re: Apache and Tomcat on separate hosts?

[Viorel Dragomir]

You can have the servers on different machines. Look more on mod_jk2 
configuration.
As I know, mod_jk2 project is no longer maintained so it's better to switch to 
mod_jk.



Viorel Dragomir

.
..
---



- Original Message - 
From: Jeff Schroeder 
To: tomcat-user@jakarta.apache.org 
Sent: Wednesday, August 17, 2005 15:17
Subject: Apache and Tomcat on separate hosts?


I finally got Apache2 + mod_jk2 + tomcat 4.1 working with tomcat doing vhosting 
on my laptop for development. The management said that is great that I should 
now roll it over to the dev servers before putting it into production.

I started setting up everything and was down to creating the vhost in 
httpd.conf when I realized one fatal problem, Apache and Tomcat are on 2 
separate servers. The way that I understand it, Apache finds a jsp page in it's 
docroot and if the host is in workers2.properties, it gets handed over to 
tomcat. 

If the webapp is not on the same box, how do you "let" apache find it to hand 
over to tomcat? My first thought was NFS, but the change control board frowns 
on any sort of filesharing among the servers. It's kind of important to get 
this properly working, is there any other way? Thanks.

Jeff Schroeder
Web Administrator
Comair, Inc.



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Re: Multiple virtual hosts NEWBIE (UNCLASSIFIED)

[Hassan Schroeder]

The question is how am I gonna host these two sites on the same tomcat
instance ? Is this done through tomcat ? Is it even possible ?
The hosting company supports having multiple domains under one main domain.

Any suggestions ?


Yes -- read the excellent Tomcat Configuration reference for the
version of Tomcat you're running.

Also, you may find the learning curve shorter if you install that
version on your desktop system to experiment with...

FWIW!
--
Hassan Schroeder - [EMAIL PROTECTED]
Webtuitive Design ===  (+1) 408-938-0567   === http://webtuitive.com

  dream.  code.



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Apache and Tomcat on separate hosts?

[Jeff Schroeder]

I finally got Apache2 + mod_jk2 + tomcat 4.1 working with tomcat doing vhosting 
on my laptop for development. The management said that is great that I should 
now roll it over to the dev servers before putting it into production.

I started setting up everything and was down to creating the vhost in 
httpd.conf when I realized one fatal problem, Apache and Tomcat are on 2 
separate servers. The way that I understand it, Apache finds a jsp page in it's 
docroot and if the host is in workers2.properties, it gets handed over to 
tomcat. 

If the webapp is not on the same box, how do you "let" apache find it to hand 
over to tomcat? My first thought was NFS, but the change control board frowns 
on any sort of filesharing among the servers. It's kind of important to get 
this properly working, is there any other way? Thanks.

Jeff Schroeder
Web Administrator
Comair, Inc.



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StandardManager EOFException

[Edouard Dalla-Costa]

Hello,

I am using Tomcat 5.0.28 which have always run fine but today I stopped 
tomcat to update my anti-virus and since that update, I am having the 
following error during tomcat starting:

17 août 2005 12:55:14 org.apache.catalina.session.StandardManager doLoad

GRAVE: "IOException" lors du chargement des sessions persistantes: 
java.io.EOFException

java.io.EOFException

at java.io.ObjectInputStream$PeekInputStream.readFully(Unknown Source)

at java.io.ObjectInputStream$BlockDataInputStream.readShort(Unknown Source)

at java.io.ObjectInputStream.readStreamHeader(Unknown Source)

at java.io.ObjectInputStream.(Unknown Source)

at org.apache.catalina.util.CustomObjectInputStream.(
CustomObjectInputStream.java:56)

at org.apache.catalina.session.StandardManager.doLoad(StandardManager.java
:384)

at org.apache.catalina.session.StandardManager.load(StandardManager.java
:343)

at org.apache.catalina.session.StandardManager.start(StandardManager.java
:657)

at org.apache.catalina.core.ContainerBase.setManager(ContainerBase.java:499)

at org.apache.catalina.startup.ContextConfig.managerConfig(
ContextConfig.java:315)

at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:635)

at org.apache.catalina.startup.ContextConfig.lifecycleEvent(
ContextConfig.java:216)

at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(
LifecycleSupport.java:119)

at org.apache.catalina.core.StandardContext.start(StandardContext.java:4290)

at org.apache.catalina.core.ContainerBase.addChildInternal(
ContainerBase.java:823)

at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)

at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)

at org.apache.catalina.core.StandardHostDeployer.addChild(
StandardHostDeployer.java:903)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java
:216)

at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:256)

at org.apache.commons.digester.Rule.end(Rule.java:276)

at org.apache.commons.digester.Digester.endElement(Digester.java:1058)

at org.apache.catalina.util.CatalinaDigester.endElement(
CatalinaDigester.java:76)

at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)

at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown 
Source)

at 
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown
Source)

at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown 
Source)

at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)

at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)

at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)

at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)

at org.apache.commons.digester.Digester.parse(Digester.java:1567)

at org.apache.catalina.core.StandardHostDeployer.install(
StandardHostDeployer.java:488)

at org.apache.catalina.core.StandardHost.install(StandardHost.java:863)

at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java
:483)

at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:427)

at org.apache.catalina.startup.HostConfig.start(HostConfig.java:983)

at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java
:349)

at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(
LifecycleSupport.java:119)

at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1091)

at org.apache.catalina.core.StandardHost.start(StandardHost.java:789)

at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)

at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)

at org.apache.catalina.core.StandardService.start(StandardService.java:480)

at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)

at org.apache.catalina.startup.Catalina.start(Catalina.java:556)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)

17 août 2005 12:55:14 org.apache.catalina.session.StandardManager start

GRAVE: Exception au chargement des sessions depuis le stockage persistant 
(persistent storage)

java.io.EOFException

at java.io.ObjectInputStream$PeekInputStream.readFully(Unknown Source)

at java.io.ObjectInputStream$BlockDataInputStream.readShort(Unknown Source)

at java.io.ObjectInputStream.readStreamHeader(Unknown Source)

at java.io.ObjectInputStream.

Multiple virtual hosts NEWBIE (UNCLASSIFIED)

[Samara, Fadi N Mr ACSIM/ASPEX]

Classification:  UNCLASSIFIED 
Caveats: NONE

Hey everyone,

I am new to this whole thing.  I just bought a domain HYPERLINK www.xxx.com
www.xxx.com and will start developing my own app/website and will deploy it
under Tomcat (The hosting company supports it).
Now my friend has a domain HYPERLINK www.yyy.com www.yyy.com registered with
yahoo which will be moved to the new company's DNS servers since yahoo
doesn't have any support for tomcat.
The question is how am I gonna host these two sites on the same tomcat
instance ? Is this done through tomcat ? Is it even possible ?
The hosting company supports having multiple domains under one main domain.

Any suggestions ? Or maybe if you know of a good hosting company that
supports tomcat, JSP/Servlets.

I appreciate your input

-Fadi
Classification:  UNCLASSIFIED 
Caveats: NONE

Enabling CGI/Perl in Tomcat 5.5.9

[A Madhusudan-A5324C]

Hi,

I am facing some problems with enabling CGI in Tomcat 5.5.9.

I followed the instructions given in the Manual, and renamed the
servlets-cgi.renametojar under jakarta-tomcat-5.5.9\server\lib\ to
servlets-cgi.jar.

Further I modified the web.xml files to uncomment the CGI enabling part.
Here they are


cgi
 
org.apache.catalina.servlets.CGIServlet

  debug
  6


  executable
  /usr/local/bin/perl


  cgiPathPrefix
  /

 5



cgi
/3gcgi/*


My context.xml file points to a directory outside the tomcat dir structure.
It is




WEB-INF/web.xml






The problem I am facing is that whatever perl scripts I have stored under
/usr/prob/3gflex/, does not execute. But any perl script under any directory
under /usr/prob/3gflex/ executes perfectly. The same if copied one level
above fails. The error thrown is given below..

java.lang.StringIndexOutOfBoundsException: String index out of range: -2
java.lang.String.substring(String.java:1480)
java.lang.String.substring(String.java:1447)

org.apache.catalina.servlets.CGIServlet$CGIEnvironment.findCGI(CGIServlet.ja
va:942)

org.apache.catalina.servlets.CGIServlet$CGIEnvironment.setCGIEnvironment(CGI
Servlet.java:1009)

org.apache.catalina.servlets.CGIServlet$CGIEnvironment.(CGIServlet.jav
a:787)
org.apache.catalina.servlets.CGIServlet.doGet(CGIServlet.java:591)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


Can anyone please hep me on this one..

Thanks
Madhusudan

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Re: Tomcat 5.5.9: Resource not found

[Litty Preeth]

Deepak ,

I forgot to tell smthing. U wont be able to access the
resources directly if u r puttng them in the WEB-INF
dir. But u wud be able to access them if u r putting
them directly under ur appln dir.


--- Litty Preeth <[EMAIL PROTECTED]> wrote:

> 
> Hi Deepak,
> 
> I had same problem with servlets. That can be
> resolved
> by adding  and  elements
> to
> the web.xml file. But i never faced a problem with
> the
> jsp or static content files.
> 
> With Regards
> Litty Preeth
> --- Deepak Joshi <[EMAIL PROTECTED]> wrote:
> 
> > Hi,
> > 
> > I have setup Tomcat 5.5.9 on Linux ES3.
> > Initial configurations are completed. I'm also
> able
> > to access the HTML files
> > which are under the
> > $CATALINA_HOME/webapps/jsp-examples through the
> > web-server.
> > 
> > But, if I put some
> > HTMLs under my own directory under
> > $CATALINA_HOME/webapps , I cannot access those
> > pages. The webserver throws a :
> > 
> > HTTP 404. Requested  resource (.) not found
> > error.
> > 
> > This seems to be a very small problem but Im
> unable
> > to get it running, Can
> > somebody please help me out..
> > 
> > Thanks in advance.
> > 
> > 
> >
>
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> > To unsubscribe, e-mail:
> > [EMAIL PROTECTED]
> > For additional commands, e-mail:
> > [EMAIL PROTECTED]
> > 
> > 
> 
> 
> 
>   
> 
> Start your day with Yahoo! - make it your home page 
> http://www.yahoo.com/r/hs 
>  
> 
>
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> 
> 




__ 
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RE: Tomcat 5.5.9: Resource not found

[Sharma, Tripurari]

You need to configure the server.xml and web.xml file
Under conf folder

 

-Original Message-
From: Litty Preeth [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, August 17, 2005 6:26 AM
To: Tomcat Users List
Subject: Re: Tomcat 5.5.9: Resource not found


Hi Deepak,

I had same problem with servlets. That can be resolved
by adding  and  elements to
the web.xml file. But i never faced a problem with the
jsp or static content files.

With Regards
Litty Preeth
--- Deepak Joshi <[EMAIL PROTECTED]> wrote:

> Hi,
> 
> I have setup Tomcat 5.5.9 on Linux ES3.
> Initial configurations are completed. I'm also able
> to access the HTML files
> which are under the
> $CATALINA_HOME/webapps/jsp-examples through the
> web-server.
> 
> But, if I put some
> HTMLs under my own directory under
> $CATALINA_HOME/webapps , I cannot access those
> pages. The webserver throws a :
> 
> HTTP 404. Requested  resource (.) not found
> error.
> 
> This seems to be a very small problem but Im unable
> to get it running, Can
> somebody please help me out..
> 
> Thanks in advance.
> 
> 
>
-
> To unsubscribe, e-mail:
> [EMAIL PROTECTED]
> For additional commands, e-mail:
> [EMAIL PROTECTED]
> 
> 





Start your day with Yahoo! - make it your home page 
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Re: Tomcat 5.5.9: Resource not found

[Litty Preeth]

Hi Deepak,

I had same problem with servlets. That can be resolved
by adding  and  elements to
the web.xml file. But i never faced a problem with the
jsp or static content files.

With Regards
Litty Preeth
--- Deepak Joshi <[EMAIL PROTECTED]> wrote:

> Hi,
> 
> I have setup Tomcat 5.5.9 on Linux ES3.
> Initial configurations are completed. I'm also able
> to access the HTML files
> which are under the
> $CATALINA_HOME/webapps/jsp-examples through the
> web-server.
> 
> But, if I put some
> HTMLs under my own directory under
> $CATALINA_HOME/webapps , I cannot access those
> pages. The webserver throws a :
> 
> HTTP 404. Requested  resource (.) not found
> error.
> 
> This seems to be a very small problem but Im unable
> to get it running, Can
> somebody please help me out..
> 
> Thanks in advance.
> 
> 
>
-
> To unsubscribe, e-mail:
> [EMAIL PROTECTED]
> For additional commands, e-mail:
> [EMAIL PROTECTED]
> 
> 





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Tomcat 5.5.9: Resource not found

[Deepak Joshi]

Hi,

I have setup Tomcat 5.5.9 on Linux ES3.
Initial configurations are completed. I'm also able to access the HTML files
which are under the
$CATALINA_HOME/webapps/jsp-examples through the web-server.

But, if I put some
HTMLs under my own directory under $CATALINA_HOME/webapps , I cannot access 
those pages. The webserver throws a :

HTTP 404. Requested  resource (.) not found error.

This seems to be a very small problem but Im unable to get it running, Can
somebody please help me out..

Thanks in advance.


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Re: persistence with sessions & distributable attribute

[Christoph Kutzinski]

Hi Nishant,

where did you read that  will *enforce* serializability?
AFAIK  "only" means that your sessions can be distributed 
to different tomcat nodes (i.e. a cluster). It doesn't enforce anything, 
you have to make sure that your session attributes are serializable by 
yourself.


I've done this for my testing environment with a SessionListener:

public class SessionListener implements HttpSessionListener, 
HttpSessionAttributeListener {


private ObjectOutputStream stream = new ObjectOutputStream(new 
OutputStream() {

public void write(int b) {}
  });

public void attributeAdded(HttpSessionBindingEvent evt) {

if (LOCAL_DEBUG) {
  // try to serialize attribute
  Object o = evt.getValue();
  synchronized (stream) {
try {
  stream.writeObject(o);
} catch (IOException e) {
  System.err.println(evt.getName() + " is not serializable: " + 
e.getMessage());

  e.printStackTrace();
}
  }
}
  }

...
}

I disable LOCAL_DEBUG in the production environment, because trying to 
serialize every attribute is probably to expensive under heavy load.



@Lintang:

That wouldn't help any. If you put your attributes (which are not 
serializable) into a HashMap (which CAN (!) be serializable) the 
resulting object (map + attribute) still wouldn't be serializable.
Serializable is more than just implementing the java.io.Serializable 
interface.



greetings,

Christoph




Lintang JP wrote:

hi Nishant,
You might want to put all your session variable inside HashMap or other 
datatypes that implements Serializable, rather than put it just in a single 
variable. Refer to the javadocs, what are those Serializable data types are. 
Or maybe you can build your own class with something like this :

 public class StoredSessionValue implements Serializable {
 // your session variable goes here
  // your setter and getter method for those variables goes here
}

You did right on your  tags.
 On 8/17/05, Nishant Deshpande <[EMAIL PROTECTED]> wrote: 


Hoping for some help from the tomcat experts on this list.

I want to ensure all objects stored in sessions are serializable.

I read that I can put the  tag in my web.xml file to
'enforce' this.

But I don't see any enforcing happening. I assumed it would throw
exceptions at runtime when I did 'setAttribute("xxx",
SomeNonSerializableObject)'.

I have put 'distributable' in

web.xml:  ...  ... 

I also have the following in server.xml:











Am I missing something? How is the serializability enforced?

Also another question: the serialization does not happen in the
directory i specify for Store above, rather it happens in the
$CATALINA_HOME/work/Catalina/* directories. Any ideas about this one?

Thanks,

Nishant

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can't find libjvm.so

[michel . brabants]

Hello,

I'm trying to setup java (edition from sun) on a linux(Scientific linux-Redhat
Entreprise Edition 3)/intel Xeon 64 bit computer. I am not sure if this problem
is related to that, but I'm getting the following problem when I try to startup
tomcat:

jsvc.exec debug: user changed to 'tomcat'
jsvc.exec debug: Using specific JVM in
/usr/java/jdk1.5.0_04/jre/lib/i386/server/libjvm.so
jsvc.exec debug: Attemtping to load library
/usr/java/jdk1.5.0_04/jre/lib/i386/server/libjvm.so
jsvc.exec error: Cannot dynamically link to
/usr/java/jdk1.5.0_04/jre/lib/i386/server/libjvm.so
jsvc.exec error: /usr/java/jdk1.5.0_04/jre/lib/i386/server/libjvm.so: cannot
open shared object file: No such file or directory
jsvc.exec error: Service exit with a return value of 1

I tried run an example-java-program and it maybe loads the jvm, but not another
shared library.

The strange thing is that I have the libjvm.so in my /etc/ld.so.cache:
]# ldconfig -p | grep -i jvm
libjvm.so (libc6) =>
/usr/java/jdk1.5.0_04/jre/lib/i386/client/libjvm.so
libjvm.so (libc6) =>
/usr/java/jdk1.5.0_04/jre/lib/i386/server/libjvm.so


thanks,

Michel

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RE: Calculating required memory

[Peter Crowther]

> From: Oleg [mailto:[EMAIL PROTECTED] 
> I am trying to approximate the amount of memory my server 
> will need running 
> tomcat. I understand that a lot depends on how the appication handles 
> resources, however at this point I am trying to figure out 
> what will be the 
> mimimum needed. In my case I have virtual hosting setup, with 
> all hosts 
> sharing the same libraries, so I have struts, hibernate,... 
> all sitting in 
> shared/lib directory of Tomcat. Would I be correct to 
> estimate that Tomcat 
> will atleast need
> 
> n(number of users/applications) * mb(total size of shared/lib)

As Chuck has already pointed out, no (but I'm going to try a slightly
different angle on it :-) ).  Each class that is loaded from shared/lib
will be loaded by the Shared classloader, so you'll only have one copy
of the class in your JVM.  Jars are compressed, so the sizes of the
loaded classes will be larger than the bytes occupied on disk; but not
all of the classes from a jar will be loaded, so the sizes will probably
be smaller.  Note, however, that any classes in the webapp's WEB-INF/lib
*will* be loaded once per webapp.  If you have large numbers of
applications, you may want to put more common libraries in shared/lib,
and you may also wish to increase the size of the permanent generation
(PermGen) in the JVM's memory model as this is where the classes are
stored.

Your per-session and per-page data will dwarf the space required for
classes; and, as Chuck pointed out, the only way to find out these sizes
is to profile the app.  This will also make sure that you're not going
to fall foul of any other performance limits, such as CPU use or disk
bandwidth.

- Peter

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Re: org.apache.catalina.valves.RemoteHostValve issue

[Mark Thomas]

Tony Tomcat wrote:

Does the RemoteHostValve work?   There are no examples in the Tomcat 5
docs and the tomcat 4 docs have the following..

 


The docs have been updated for 4 and 5 not to use this example.

The problem is that . is a special character in a regular expression 
and needs to be escaped if you want to match a single . character in 
your input.


The regexp docs are the place to read up on this.

The following should work but I haven't tried it.

  

Mark


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