diskimage-builder/diskimage_builder/elements/dhcp-all-interfaces
Bob Fournier 5d23d8e6b0 Add support for vlan interfaces in dhcp-all-interfaces.sh
Provide ability to run dhcp client on VLAN interfaces created on
top of an Ethernet interface.  See also
<https://storyboard.openstack.org/#!/story/2008298>`__ for further details.

Change-Id: Ic3ffd7b8e23b1e996cfe6c79ce0ff47e521f30be
2020-11-03 10:04:17 -05:00
..
install.d Add support for vlan interfaces in dhcp-all-interfaces.sh 2020-11-03 10:04:17 -05:00
element-deps Move elements & lib relative to diskimage_builder package 2016-11-01 17:27:41 -07:00
package-installs.yaml Add IPv6 support in dhcp-all-interfaces 2019-11-13 09:31:01 +01:00
pkg-map Install ndisc6 package in element script 2019-12-03 14:57:33 +01:00
README.rst Set the dhclient timeout to match DIB_DHCP_TIMEOUT 2018-04-05 14:29:22 +01:00

===================
dhcp-all-interfaces
===================
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.

On non-Gentoo based distributions 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.

On Gentoo based distributions we will install the dhcpcd package and
ensure the service starts at boot.  This service automatically sets
up all interfaces found via dhcp and/or dhcpv6 (or SLAAC).

Environment Variables
---------------------

DIB_DHCP_TIMEOUT
  :Required: No
  :Default: 30
  :Description: Amount of time in seconds that the systemd service(or dhclient)
   will wait to get an address. Should be increased in networks such as
   Infiniband.
  :Example: DIB_DHCP_TIMEOUT=300