Background:
Website has been up and running with this particular configuration for
over a year with minimal problems. A couple of weeks ago we started
getting some "internal server errors" in apache. In viewing the logs I
was noticing a several "java.net.SocketException: Socket closed" in the
catalina log file. It seems to reject the connection to apache, but
still starts another Ajp13Processor. Eventually the server has so many
java processes running that no content is served. Most of the processes
that are spawned are doing nothing. Seems to me that GC should take care
of them.
Some of the log files indicate that there are servlet errors when the
jsp is compiled. This is odd, since the page has worked fine in the
past. I can send along the page source if need be.
Below I have included some (hopefully) helpful info to diagnose this
bugger.
Setup:
Tomcat 4.0.2
JDK 1.4.0
Apache 1.3.26
Mod_jk 1.1.0
Ajp13
Current Server.xml:
<Server port="8005" shutdown="SHUTDOWN" debug="0">
<Service name="Tomcat-Standalone">
<Connector className="org.apache.ajp.tomcat4.Ajp13Connector"
port="8009" minProcessors="10" maxProcessors="1024"
acceptCount="10" debug="0"/>
<Engine name="Standalone" defaultHost="localhost" debug="0">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="catalina_log." suffix=".txt"
timestamp="true"/>
<Realm className="org.apache.catalina.realm.MemoryRealm" />
<Host name="localhost" debug="0" appBase="webapps"
unpackWARs="true">
<Valve className="org.apache.catalina.valves.AccessLogValve"
directory="logs" prefix="localhost_access_log."
suffix=".txt"
pattern="common"/>
<Logger className="org.apache.catalina.logger.FileLogger"
directory="logs" prefix="localhost_log." suffix=".txt"
timestamp="true"/>
<Context path="" docBase="/usr/local/apache/htdocs" debug="0"
reloadable="true" />
</Host>
<Host name="qa.comfedbank.com" debug="0" appBase="webapps"
unpackWARs="true">
<Context path="" docBase="/usr/local/apache/qa_site"
debug="0" reloadable="true" />
</Host>
</Engine>
</Service>
<Service name="Tomcat-Apache">
<Connector
className="org.apache.catalina.connector.warp.WarpConnector"
port="8008" minProcessors="10" maxProcessors="1024"
enableLookups="true" appBase="webapps"
acceptCount="10" debug="0"/>
<Engine className="org.apache.catalina.connector.warp.WarpEngine"
name="Apache" debug="0">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="apache_log." suffix=".txt"
timestamp="true"/>
<Realm className="org.apache.catalina.realm.MemoryRealm" />
</Engine>
</Service>
</Server>
Snippet from catalina log:
....
2002-12-04 09:43:15 Ajp13Processor[8009][35] Starting background thread
2002-12-04 09:43:20 Ajp13Processor[8009][3] process: invoke
java.net.SocketException: Socket closed
at java.net.SocketOutputStream.socketWrite0(Native Method)
at
java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
at
java.net.SocketOutputStream.write(SocketOutputStream.java:126)
at org.apache.ajp.Ajp13.send(Ajp13.java:525)
at org.apache.ajp.RequestHandler.finish(RequestHandler.java:496)
at org.apache.ajp.Ajp13.finish(Ajp13.java:395)
at
org.apache.ajp.tomcat4.Ajp13Response.finishResponse(Ajp13Response.java:1
92)
at
org.apache.ajp.tomcat4.Ajp13Processor.process(Ajp13Processor.java:435)
at
org.apache.ajp.tomcat4.Ajp13Processor.run(Ajp13Processor.java:495)
at java.lang.Thread.run(Thread.java:536)
....
Snippet from site log (the interesting stuff):
....
2002-12-04 08:30:05 StandardWrapperValve[jsp]: Servlet.service() for
servlet jsp threw exception
org.apache.jasper.JasperException: Unable to compile class for JSPNote:
sun.tools.javac.Main has been deprecated.
An error occurred between lines: 293 and 374 in the jsp file: /index.jsp
Generated servlet error:
/usr/local/jakarta-tomcat-4.0.2/work/localhost/_/index$jsp.java:251:
String not terminated at end of input.
out.write("</td>\r\n<!--- END SMALL BANNER
CELL --->\r\n</tr>\r\n<tr>\r\n etc...
....
Keeps giving errors about missing ; and } characters.
It also has a ton of entries like the one below:
....
/usr/local/jakarta-tomcat-4.0.2/work/localhost/_/index$jsp.java:1:
Invalid character in input.
import javax.servlet.http.*;
....
16385 errors, 1 warning
Etc...
----------------------------
Darin Kuntze
Senior Technologist
The Sacco Group
http://www.saccogroup.com
(p)402.392.2222 x120
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