It IT/Releases/12/Features/Network Interface Management
Network Interface Management
Provide tools to easily set up commonly used network configurations, like bridges, bonds, vlan's and sensible combinations thereof, in particular for virtualized hosts.
- Targeted release: Fedora 12
- Last updated: 2009-08-05
- Percentage of completion: 100%
- netcf library design
- Initial discussion on libvir-list on the XML format, API and implementation options.
- netcf library and ncftool command line tool
- Design of the libvirt API and virsh commands
- Implementation included in libvirt-0.7.0
Configuring the network interfaces on a machine for moderately complicated yet common scenarios is generally only accessible to advanced users, and very poorly supported by existing tools. Such scenarios include creating a bridge and enslaving a physical NIC to it, or bonding two NIC's, adding a VLAN interface to the bond and enslaving that to a bridge.
Complicated bridge setups are commonly needed on virtualized hosts, and often have to be performed remotely by higher-level management tools, rather than a human user.
This feature addresses these needs by providing a general-purpose network configuration library (netcf) and additions to the libvirt API to expose netcf's local API through libvirt's remoting facilities.
netcf, a logical network interface (e.g. a bridge and its
slaves) is described as a unit, and
netcf takes care of
translating that description into the appropriate
files. To guarantee the happy coexistence of
netcf with other
network configuration utilities, including
netcf is bidirectional: it modifies
based on a
netcf interface description, but also reads
ifcfg-* files to generate such a description. It is therefore
possible to use
netcf side-by-side with any other method of
changing network configuration, and many of the pitfalls of earlier
attempts to do this, e.g., the Xen networking scripts, are avoided.
It is planned to switch NetworkManager to
netcf as the backend
for system-wide network configuration in a future release; while it's not part of this feature,
it will further unify the user experience around network configuration. In
the same vein, it is planned to expose network configuration functionality
in a future release of virt-manager
Benefit to Fedora
Configuring network interfaces, especially for virtualization, is
considerably simplified; for example, the very common setup described in
the libvirt documentation now boils down to running a couple of
netcf commands or
Complex setups, like bonding physical NIC's and enslaving a VLAN of that bond in a bridge, which are so far considered expert uses, can now be easily performed by non-experts.
Remote management of network configuration is now possible out-of-the-box.
- Test Plan
- Esperienza Utente
- Progetto corrente
- Note di rilascio
- Commenti e Discussioni
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