Prevent duplicate VMs

[schlomo]

Problem

After edbe211 LML checks for duplicate VMs only for VMs that use one of the [dhcp] managed_networks networks. For all other ( static ) networks there is no duplicate VM check at all.

Ideas

Search vSphere API

Search vSphere API for VMs with same name and throw error if it finds more than the one that is currently booting.

Downside of this solution is that it covery only covers duplicate VMs and not the creation of a VM that duplicates the name of a physical machine.

Check master DB

Check in some master DB that should know about all systems, e.g. Config SVN.

Advantage is that it covers conflicts regardless of the type of the system.

Disadvantage is another external dependency.