diskimage-builder/elements/dhcp-all-interfaces
Dan Prince f10e614579 Support adding DHCP interfaces one at a time.
Refactors dhcp-all-interfaces.sh so that if an optional
INTERFACE argument (the first argument) is passed to the script
it only inspects that single interface. If no argument is
passed then the previous default behaviour is used which
causes all interfaces to be inspected.

To avoid a collision with the previous $1 we move to using
$FLOCKED for the exec flock command which runs on distributions
using ENI.

Also sets PATH so that the commands within the script
can all be found if it isn't set properly (/sbin/ip, /bin/cat, etc.)

This is a move towards using udev rules to add these types
of interfaces automatically.

Change-Id: I3ec8fd2cc2071bfc6943c744ca619e31b71146fc
2014-03-14 13:30:17 -04:00
..
install.d Support adding DHCP interfaces one at a time. 2014-03-14 13:30:17 -04:00
README.md Rename generate-interfaces-file.sh... 2014-01-23 16:38:41 -05:00

Autodetect network interfaces during boot and configure them for DHCP

The rationale for this is that we are likely to require multiple network interfaces for use cases such as baremetal and there is no way to know ahead of time which one is which, so we will simply run a DHCP client on all interfaces with real MAC addresses (except lo) that are visible on the first boot.

The script /usr/local/sbin/dhcp-all-interfaces.sh will be called early in each boot and will scan available network interfaces and ensure they are configured properly before networking services are started.