Add Libvirt Hypervisor support to Hudson
This plugin for Hudson CI adds a way to control guest domains hosted on Xen or QEMU/KVM. You configure a Hudson Slave, selecting the guest domain and hypervisor. When you need to build a job on a specific Slave, its guest domain is started, then the job is run. When the build process is finished, the guest domain is shut down, ready to be used again as required.
For a communication with Hypervisors you need to install libvirt library on Hudson machine. This plugin comes with libvirt java binding, but is just an interface to the "real" C libvirt library. In your distribution you should have a package to install libvirt (ie yum install libvirt on RedHat/Fedora/Centos distributions).
The required parameters to setup are:
The connection to Hypervisor will be done using ssh, so you don't need to setup libvirt, exposing your services on tcp that could be a security hole in your infrastructure. Here an example of connection string will be used by Libvirt Slaves Plugin to create a connection with the hypervisor:
you can test you connection typing, from your Hudson Server:
An important thing is the RSA public key exchange between Hudson Server and Hypervisor Machine: you need to add to .ssh/known_hosts file the rsa.pub file of your hudson user. This because, for an actual limitation in libvirt java library, it's impossible to provide via code the ssh password, that means hudson could not establish a connection if password request will be prompted.
To verify all you parameters you can click on Test button and check the output reported.
Going ahead with configuration you can see a page that looks like the normal node creation page, with two combo box added. The first one where you have to select the hypervisor, and the second one for virtual machine selection.
If all is well configured you can tied jobs to your libvirt slaves and you will see that your machine will be started up before the build process.