too many open files

[Nick Wesselman <ni...@digivis.com>]

On a production Tomcat 4.0.3 site, we've had a couple crashes with "Too 
many open files" errors. (Redhat 7.2)

If we run "lsof," one particular jsp file (the most popular on the site) 
is listed many, many times--more than would be merited by the popularity 
of this site. Why should Tomcat keep open so many file handles open to a 
jsp file?

For now, we've upped the number of possible open files. But we only see 
this as a temp solution. Does Jasper have a file handle leak?

Nick Wesselman
Digital Visions, Inc.


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RE: Tomcat 4.1.7b / Apache httpd 2.0.39 connection how-to

[Andrew Conrad <an...@msn.com>]

I have this configuration working, but that doesn't mean I did it
correctly.


Here goes:


1) Downloaded the mod_jk2.dll from
http://jakarta.apache.org/builds/jakarta-tomcat-connectors/jk2/nightly/w
in32/ and placed it in  ${APACHE2_HOME}/modules 

2) Added 1 line to my httpd.conf file.

	LoadModule jk2_module modules/mod_jk2.dll

3) Downloaded the workers2.properties from
http://cvs.apache.org/viewcvs.cgi/jakarta-tomcat-connectors/jk/conf/ and
placed it in ${APACHE2_HOME}/conf    <---  stumbled a lot trying to
place it anywhere else.  The logs kept looking for it in this location,
and I couldn't use JkWorkersFile in my httpd.conf file to load it
anywhere else.

4) commented out a lot of lines in the workers2.properties file until it
loaded smoothly  ( very scientific aproach ) Particulary, I commented
out jni and unix sockets info.  Didn't know what to do with it anyways.

5) commented out the entire ${CATALINA_HOME}\conf\jk2.properties file


That's it.  It seems to work.  I'm waiting for an authoratative doc to
see if I configured it correctly.

I used the archives a bit, and this one I found helpful

http://www.mail-archive.com/tomcat-user@jakarta.apache.org/msg57438.html


Also, as long as you don't comment out the [uri:/jkstatus/*] section,
you can go here and get some helpful info

http://localhost/jkstatus


- Andrew




-----Original Message-----
From: Paul landolt [mailto:landolt@royalsys.com] 
Sent: Friday, July 12, 2002 2:04 PM
To: Tomcat Users List
Subject: Tomcat 4.1.7b / Apache httpd 2.0.39 connection how-to


Like several other people, I am trying to Connect Tomcat 4.1.7b with
Apache v2.0.39 using the Coyote JK2 connector (because the site said, in
big friendly letters, "IMPORTANT NOTE: The JK connector is now
deprecated. Use the Coyote JK 2 connector instead")

I am going though the motions of following the directions, and I appear
to have made _some_ headway, but I cannot be sure since httpd does not
appear to be configured correctly.

Rather than a long bout of "This is what I'm doing" and "are you doing
this as well?", I would like to know if anyone has successfully
configured the two applications using JK2, and if they'd be willing to
supply a simple "How-to" in order for the rest of us to get farther
along in the game.

In my particular case, I'm running Tomcat 4.1.7b and Apache v2.0.39 on a
Win2K box (for proof of concept), but I would like to know how to
configure same on a linux box.

I'm sure that any help in this matter would be of tremendous value to
many of us newbies

    ...Paul



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Tomcat 4.1.7b / Apache httpd 2.0.39 connection how-to

[Paul landolt <la...@royalsys.com>]

Like several other people, I am trying to Connect Tomcat 4.1.7b with Apache
v2.0.39 using the Coyote JK2 connector (because the site said, in big friendly
letters, "IMPORTANT NOTE: The JK connector is now deprecated. Use the Coyote JK 2
connector instead")

I am going though the motions of following the directions, and I appear to have
made _some_ headway, but I cannot be sure since httpd does not appear to be
configured correctly.

Rather than a long bout of "This is what I'm doing" and "are you doing this as
well?", I would like to know if anyone has successfully configured the two
applications using JK2, and if they'd be willing to supply a simple "How-to" in
order for the rest of us to get farther along in the game.

In my particular case, I'm running Tomcat 4.1.7b and Apache v2.0.39 on a Win2K
box (for proof of concept), but I would like to know how to configure same on a
linux box.

I'm sure that any help in this matter would be of tremendous value to many of us
newbies

    ...Paul



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