Tutorials – Page 4 – Johannes Neubauer

Problem deleting mailboxes in cyrus with cyradm

4. February 20104. February 2010 jonny Leave a comment

The cyrus imap server in version 2.2 has a weired behavior: By default an admin user is not allowed to delete mailboxes he created. The good news is, he is allowed to give himself the right to do so. Read More

Remote debugging with Java Virtual Machine

20. January 201020. January 2010 jonny 2 Comments

In order to remote debug a JVM export the following java options:

export JAVA_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,address=8888,server=y,suspend=n -XX:MaxPermSize=1024m"

I got this information from this site http://ztiromoritz.wordpress.com/2009/08/03/java-remote-debugging/.

After exporting these java options in the shell where you start the jvm you like to debug, you can use your favorite IDE to connect to port 8888 at localhost in order to start debugging.

Multiple one phase resources in jBoss-5.1.0.GA

28. October 200928. October 2009 jonny Leave a comment

In jBoss-5.0.1.GA there was the configuration file ${JBOSS_HOME}/${SERVER_CONFIG}/conf/jbossjta-properties.xml. In order to enable distributed transactions for multiple local resources (non-XA) the following option had to be inserted into this file:

In jBoss-5.1.0.GA this config file has been replaced by ${JBOSS_HOME}/${SERVER_CONFIG}/conf/jbossts-properties.xml. So you have to add the same line into the xml-element with name properties and attributes depends with value “arjuna” and name with value “jta”:


    
    <!-- ... -->

SVN branching & merging

14. September 200914. September 2009 jonny 1 Comment

This post describes some branch & merge scenarios for subversion repositories. For more info have a look at the svn book. The variant described here is obsolete as of svn server version 1.5.
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Standalone Tomcat with jBoss plus authentication against LDAP

13. June 200913. June 2009 jonny 5 Comments

There is a 2nd edition of this post: Standalone Tomcat with jBoss (2nd Edition)!
This tutorial desribes, how to install and configure a standalone Tomcat, so that a deployed webapp can authenticate against LDAP and connect to a jBoss passing the credentials in every call of an EJB via remote interface , so that the business application can authenticate against the same LDAP, too. The configuration of the jBoss seems to be a more common and better documented task and will be covered in another tutorial, which I will link here later, as soon as I have written it.

WARNING: Please don’t use this solution in a productive system, but for testing purpose only. The custom LdapExtLoginModule presented here exposes the credentials of all online users to all classes using the same class loader! I will add a blog post, as I find a solution for production systems.
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