diskimage-builder/elements/ramdisk/README.md
Adam Gandelman 40914bd121 Reinstate Trusty as default for Ubuntu
Now that issues associated with this bump have been addressed
elsewhere, reinstate trusty as the default DIB_RELEASE for
the ubuntu element.  Also adds a note about memory requirements
to the ramdisk element.

Change-Id: Ia89c83ba0ee4ad3bd89b833ba0db08135eac63ed
2014-06-03 16:28:25 -07:00

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Markdown

This is the ramdisk element.
Almost any user building a ramdisk will want to include this in their build,
as it triggers many of the vital functionality from the basic diskimage-builder
libraries (such as init script aggregation, busybox population, etc).
An example of when one might want to use this toolchain to build a ramdisk would
be the initial deployment of baremetal nodes in a TripleO setup. Various tools
and scripts need to be injected into a ramdisk that will fetch and apply a
machine image to local disks. That tooling/scripting customisation can be
easily applied in a repeatable and automatable way, using this element.
NOTE: ramdisks require 1GB minimum memory on the machines they are booting.
See the top-level README.md of the project, for more information about the
mechanisms available to a ramdisk element.