Hi,
I am getting an out of memory error when I start Tomcat. I read posts on
this in the past and followed some instructions to increase by min and max
memory settings in catalina.sh. I have 1028 MB on this server and so I
increased the min to 128 and the max to 768.
The server was working fine when I had a few test sites on it. I am
currently using Apache httpd 2.0.52, Tomcat 5.0.28 and mod_jk2 configured
with workers2.properties and so that tomcat can listen to apache requests.
Apache httpd serves static files and Tomcat
is set to work on jsp's with the directive:
JkUriSet worker ajp13:localhost:8009
The problem showed up when I started migrating some sites over and increased
the number of hosts significantly. I created 80 VirtualHosts in httpd.conf
and 80 hosts in server.xml. Then I created 80 corresponding directories in
webapp, each with META-INF and WEB-INF subdirectories.
Even though all these directories and subdirectories are empty, when I start
up Tomcat, it tries to deploy them all and throws the out of memory error.
If I remove most of the hosts in server.xml, everything runs fine again.
My goal is to have these sites each with a large number of static pages and
only a few jps's which are Lucene's search.jsp and results.jsp. After this
I want to have these sites each has a portal component using Jetspeed 2.
I know that if Tomcat was not in the picture this server would be able to
handle many more sites, but is 80 hosts with only a few jsps in each too
much for Tomcat on an average modern Web server? How can I optimize this?
Below I have included code snippets of my httpd.conf and server.xml and
workers2.properties.
Thanks.
#--
#httpd.conf snippet
#--
DocumentRoot /opt/jakarta-tomcat-5.0.28/webapps/sitename
ServerName sitename.com
ServerAlias www.sitename.com
DirectoryIndex index.html index.jsp index.cgi index.php
CustomLog logs/sitename_access_log combined
ErrorLog logs/sitename_error_log
JkUriSet worker ajp13:localhost:8009
ScriptAlias /WEB-INF/
/opt/jakarta-tomcat-5.0.28/webapps/sitename/WEB-INF/
AllowOverride None
Options None
Order allow,deny
Allow from all
ScriptAlias /META-INF/
/opt/jakarta-tomcat-5.0.28/webapps/sitename/META-INF/
AllowOverride None
Options None
Order allow,deny
Allow from all
AllowOverride AuthConfig
ErrorDocument 404 http://www.sitename.com/errorpages/404.html
#--
#server.xml snippet
#--
www.sitename.com
directory="logs" prefix="sitename." suffix=".log"
timestamp="true"/>
#---
#workers2.properties snippet
#---
[shm]
info=Scoreboard. Requried for reconfiguration and status with multiprocess
servers.
file=anon
# Defines a load balancer named lb. Use even if you only have one =machine.
[lb:lb]
# Example socket channel, override port and host.
[channel.socket:localhost:8009]
port=8009
#host=localhost
host=127.0.0.1
# define the worker
[ajp13:localhost:8009]
channel=channel.socket:localhost:8009
group=lb
# Uri mapping
# Map the Tomcat examples webapp to the Web server uri space
[uri:/examples/*]
group=lb
[status:]
info=Status worker, displays runtime information
[uri:/jkstatus/*]
info=The Tomcat /jkstatus handler
group=status:
_
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