Tomcat startup problem

M

moongateclimber

Hello,

I've been trying to install OpenNMS for a week with no success. Right
now the problem looks like a Tomcat problem, so I thought I could try
to look for answers here; if you want to redirect me to a more
appropriate newsgroup, please do.

I am using jakarta Tomcat 5.0.28. The OpenNMS installation requires a
new Context tag to be added to the server.xml file. The tag looks like
this:

<Context path="/opennms" docBase="opennms" debug="0"
reloadable="true">
<Logger classname="org.opennms.web.log.Log4JLogger"
homeDir="/opt/OpenNMS"/>
<Realm className="org.opennms.web.authenticate.OpenNMSTomcatRealm"
homeDir="/opt/OpenNMS"/>
</Context>

On startup, Tomcat crashes and I find the following log in
logs/catalina.out:

19-nov-2004 9.25.00 org.apache.commons.digester.Digester startElement
GRAVE: Begin event threw exception
java.lang.NullPointerException
at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:769)
at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:721)
at org.apache.commons.digester.ObjectCreateRule.begin(ObjectCreateRule.java:252)
at org.apache.commons.digester.Rule.begin(Rule.java:200)
at org.apache.commons.digester.Digester.startElement(Digester.java:1273)
at org.apache.catalina.util.CatalinaDigester.startElement(CatalinaDigester.java:65)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown
Source)
at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown
Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown
Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown
Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown
Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown
Source)
at org.apache.commons.digester.Digester.parse(Digester.java:1548)
at org.apache.catalina.startup.Catalina.load(Catalina.java:489)
at org.apache.catalina.startup.Catalina.load(Catalina.java:528)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:250)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:424)
Catalina.start using conf/server.xml: java.lang.NullPointerException
java.lang.NullPointerException
at org.apache.commons.digester.Digester.createSAXException(Digester.java:2540)
at org.apache.commons.digester.Digester.createSAXException(Digester.java:2566)
at org.apache.commons.digester.Digester.startElement(Digester.java:1276)
at org.apache.catalina.util.CatalinaDigester.startElement(CatalinaDigester.java:65)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown
Source)
at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown
Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown
Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$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:1548)
at org.apache.catalina.startup.Catalina.load(Catalina.java:489)
at org.apache.catalina.startup.Catalina.load(Catalina.java:528)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:250)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:424)
19-nov-2004 9.25.00 org.apache.commons.digester.Digester startElement
GRAVE: Begin event threw exception
java.lang.NullPointerException
at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:769)
at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:721)
at org.apache.commons.digester.ObjectCreateRule.begin(ObjectCreateRule.java:252)
at org.apache.commons.digester.Rule.begin(Rule.java:200)
at org.apache.commons.digester.Digester.startElement(Digester.java:1273)
at org.apache.catalina.util.CatalinaDigester.startElement(CatalinaDigester.java:65)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown
Source)
at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown
Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown
Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown
Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown
Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown
Source)
at org.apache.commons.digester.Digester.parse(Digester.java:1548)
at org.apache.catalina.startup.Catalina.load(Catalina.java:489)
at org.apache.catalina.startup.Catalina.start(Catalina.java:548)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
Catalina.start using conf/server.xml: java.lang.NullPointerException
java.lang.NullPointerException
at org.apache.commons.digester.Digester.createSAXException(Digester.java:2540)
at org.apache.commons.digester.Digester.createSAXException(Digester.java:2566)
at org.apache.commons.digester.Digester.startElement(Digester.java:1276)
at org.apache.catalina.util.CatalinaDigester.startElement(CatalinaDigester.java:65)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown
Source)
at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown
Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown
Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$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:1548)
at org.apache.catalina.startup.Catalina.load(Catalina.java:489)
at org.apache.catalina.startup.Catalina.start(Catalina.java:548)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
19-nov-2004 9.25.00 org.apache.catalina.startup.Catalina start
INFO: Server startup in 0 ms
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
Caused by: java.lang.NullPointerException
at org.apache.catalina.startup.Catalina.await(Catalina.java:619)
at org.apache.catalina.startup.Catalina.start(Catalina.java:579)
... 6 more

Any suggestions? I thank you very much for any help, I'm about to give
up with the installation if I don't find a solution!

MC
 
S

shakahshakah

You probably verified this, but does Tomcat start up fine without the
opennms Context tag in server.xml?

Is there a $TOMCAT_HOME/webapps/opennms directory (e.g.
/usr/local/tomcat/webapps/opennms)?

If both of those are true, have you tried making a bare-bones WEB-INF
directory for opennms (e.g. temporarily removing opennms's web.xml file
from WEB-INF, .jar files from WEB-INF/lib, etc.)?
 
M

moongateclimber

You probably verified this, but does Tomcat start up fine without the
opennms Context tag in server.xml?
Click to expand...

Yes it does.
Is there a $TOMCAT_HOME/webapps/opennms directory (e.g.
/usr/local/tomcat/webapps/opennms)?
Yes.

If both of those are true, have you tried making a bare-bones WEB-INF
directory for opennms (e.g. temporarily removing opennms's web.xml file
from WEB-INF, .jar files from WEB-INF/lib, etc.)?
Click to expand...

I am trying this. Even with an empty WEB-INF, Tomcat crashes. I will
try to add WEB-INF elements one by one...

Thanks for helping,
MC
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Similar Threads

tomcat: SEVERE: Begin event threw exception 3
JUnit not accessing user defined classes of digester 0
Tomcat 5 Clustering 1
TomCat problem - locale problem? 4
Tomcat 5.5 startup error 2
Error: Jsp Servlet unavailable (Tomcat 4.1.3) 0
Tomcat Startup Problem - Installing Web Application 2
Facing exception: Invalid byte 2 of 4-byte UTF-8 sequence. 6

Members online

Total: 49 (members: 4, guests: 45)
Robots: 403

Forum statistics

Threads
473,982
Messages
2,570,186
Members
46,744
Latest member
CortneyMcK

Latest Threads

Top