Vnx-examples

VNX Example Scenarios

Several example scenarios are distributed together with VNX to allow easily testing its functionalities (see /usr/share/vnx/examples directory).

Con la distribución provisional de VNX se proporcionan dos nuevos escenarios de ejemplo para mostrar las capacidades para crear máquinas virtuales basadas en Windows XP: Three types of scenarios are included:

• root_fs_XXX.xml, which are simple scenarios to start a single virtual machines with Internet connection (through a NAT). They are included to easily allow modifying rootfilesystems (for example, to install new software packages).
• simple-XXX.xml: simple scenarios made of one virtual machine without network interfaces.
• tutorial_root1-xp.xml, basado en el escenario del tutorial de VNUML (http://www.dit.upm.es/vnumlwiki/index.php/Tutorial) y compuesto por dos máquinas virtuales Linux (uml1 y uml3) y tres Windows XP (uml2, uml4 y uml5).

To test the scenarios:

• Open a root shell from the graphical console of the host machine. If you are not sat in front of host's console you can access it using ssh with X-forwarding activated. For example, from a Unix machine you can use:

  ssh -X <host-addr>

In this case, it is recommended to test that X-forwarding is working by launching a "xterm" or "xeyes" application and seeing that the application window is correctly launched.

Es importante además que la conectividad entre la máquina cliente y el servidor donde se ejecuta VNX sea buena, ya que el acceso a las consolas de las máquinas virtuales se hace impracticable en caso contrario.

Simple scenarios

• Start simple scenarios by means of:

vnx -f /usr/share/vnx/examples/simple_xp.xml -v -u root --create

Just after the execution, you will see the console of the Windows XP machine starting. Once the machine has completely started, the autoconfiguration daemon will configure it (the name and network interfaces are configured in general; only the name in the simple example) and restart it for the changes to take effect.

After the restart, the virtual machine will be available for interacting with it.

Note: virt-viewer console application "captures" the mouse when interacting with the virtual machines. You have to type "Ctrl-Alt" to release the mouse.

• To stop the scenario preserving the changes made:

vnx -f /usr/share/vnx/examples/simple_xp.xml -v -u root --shutdown

• To stop the scenario discarding the changes made:

vnx -f /usr/share/vnx/examples/simple_xp.xml -v -u root --destroy

Tutorial scenarios

• To start the tutorial scenario with linux and XP machines just type:

vnx -f tutorial_root1_xp.xml -v -u root --create

• Once the scenario has completely started (remenber that the XP machines have to be restarted for the autoconfiguration to complete), you can test the network connectivity, for example, accesing uml1 machine and tracing to uml5: traceroute -n 10.0.2.2
• Para parar y rearrancar una máquina concreta sin perder las modificaciones realizadas: vnx -d examples/tutorial_root1_xp.xml -v -u root -M uml4 vnx -t examples/tutorial_root1_xp.xml -v -u root -M uml4
• Para parar y rearrancar una máquina concreta creando una copia nueva desde el rootfs original: vnx -P examples/tutorial_root1_xp.xml -v -u root -M uml4 vnx -t examples/tutorial_root1_xp.xml -v -u root -M uml4