March 6, 2015

Crontab Expression

I do not write contab scheduling expression every day, so I tend to forget the expression syntax. Below is a good site for generating such expressions.

March 3, 2015

Puppet IDE Geppetto

When writing puppet modules I would recommend using an IDE when writing puppet code. The IDE from puppetlab is the most mature - Geppetto. Geppetto is fine, but one warning when installing it.

DO NOT install Geppetto as a plugin in an existing Eclipse. Instead I recommend downloading the bundle version

March 2, 2015

How to Install Tomcat 6 on RHEL 6

A good and accurate guide exists on

Maven RPM Plugins

There are two major maven rpm plugins.

  1. rpm-maven-plugin The Codehaus mojo plugin is good and holds good quality as almost all mojo plugins, but has one big disadvantage. It requires rpmbuild linux tool, which means it will not run without pain on Windows. You could of cource switch to a better os, but that is often easier said than done in bigger organizations.
  2. Redline RPM The second tool is build on Redline, which is a pure java library, which means it will run on windows. The backdraw with this one, is that it exists no maven plugin for it, only ant is supported out of the box.