Chris Searle

After running continuous integration with continuum for a long while (which works great for maven projects) I decided to take a look at Hudson. It can also do maven - but seems to have a larger range of plugins available. Of interest to me was grails.

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One of the systems that can be used for monitoring trends on a system is munin. It turns out that adding a graph to munin is reasonably simple.

There is a good guide on the munin site.

So - I need a plugin that will return the number of open files.

lsof -u glassfish | wc -l

Technorati Tags: glassfish monitoring munin

My glassfish process kept dying with "Too many open files" in the log.

I'm not surprised that it has too many - it has quite a few large applications running - but how to increase this?

ulimit -n shows that the user has a default of 1024.

Technorati Tags: debian glassfish linux ulimit

Instead of using a self-signed certificate with glassfish (see Creating new SSL keys with keytool for glassfish) - we want to use one that is signed by a certificate authority.

Based on http://blogs.sun.com/enterprisetechtips/entry/using_ssl_with_glassfish_v2

Technorati Tags: glassfish keystore keytool openssl ssl

I needed to generate a new certificate for glassfish's admin pages.

Instead of using the normal OpenSSL self-signed certificate it was easier just to use the java keystore keytool

keytool -genkey -keyalg RSA -alias
<alias_referred_to_in_glassfish>
-keystore glassfish/domains/domain1/config/keystore.jks
-storepass changeit

Note the -keyalg RSA - keytool by default uses DSA and firefox 3.0 will not accept this even with an added security exception.

Technorati Tags: glassfish java keystore keytool ssl

I have had jira and confluence running under tomcat 5.5.23 (behind apache over AJP13/mod_jk) for a while now. The aim is to migrate them over to glassfish (behind the same apache but with mod_proxy).

Software versions:

• Atlassian Jira 3.12.2
• Atlassian Confluence 2.8.0
• Apache Tomcat 5.5.23
• Glassfish 2.1 build 39

Technorati Tags: apache atlassian confluence glassfish jira mod_jk mod_proxy tomcat