Versions Compared


  • This line was added.
  • This line was removed.
  • Formatting was changed.

Who are you?

I'm Ned Collyer. I specialise specialize in web technologies - accessibility, htmlHTML, javascriptJavaScript, java Java frameworks etc. We build search products and solutions. These are mainly written in Java.


We use Hudson for our CI needs. We have projects requiring a large number of configurable modules that need to run on different environments, with around 20 developers.

Previously we were using cruisecontrolCruiseControl. We migrated because of the great failure reporting and central management that Hudson provides. Also configuring the lava lamps from a central XML feed just feels nicer, and the improving maven support is something to be excited about (order the module build order correctly - then it will be perfect (wink)


We have slaves for PostgreSQL, MySQL, Oracle running against Linux, and also a VM running Windows 2003 with MSSQL. These are running on a rack of beastly dual quadcore Xeons with a 4GB RAM each. We currently have 3 dedicated machines for this. A full build cycle takes around 40 minutes depending on the settings. The execution of the master node is significantly faster than the slaves so we use it for running selenium Selenium integration tests (through selenese/maven/cargo). This is configured via MAVEN_OPTS on one of the sub modules.


Unfortunately, many of our modules test against the same database so we cannot take advantage multiple executors, and need to tie each build against a specific slave. The one thing that bugs me is probably not Hudson related. The Windows filesystem and how paths/classpath relate to Cygwin shell is horrible. I can't stand windowsWindows!

Using virtual


machines as slaves

Because our servers all run Linux, we use a VM to run our Windows test environment. We also use a VM to run Oracle - it just makes things easier (smile) . Each VM has its own IP so its just like any other phyiscal physical machine on the network. If you have enough hardware running VMs is great! (eg, if : If you need to reinstall software (eg oracle) , like Oracle, you can have it back up and running within minutes.)