tripleo-heat-templates/firstboot/userdata_default.yaml
Steven Hardy 723db1317c Enable passing optional first-boot user-data
Currently all the OS::Nova::Server resource created don't pass any
user-data.  It's possible to pass user-data as well as using heat
SoftwareConfig/SoftwareDeployment resources, and this can be useful
when you have simple "first boot" tasks which are possible either via
cloud-init, or via simple run-once scripts.

This enables passing such data by implementing a new provider resource
OS::TripleO::NodeUserData, which defaults to passing an empty mime
archive (thus it's a no-op).  An example of non no-op usage is also
provided.

Change-Id: Id0caba69768630e3a10439ba1fc2547a609c0cfe
2015-04-24 10:18:31 +01:00

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YAML

heat_template_version: 2014-10-16
description: >
This is a default no-op template which provides empty user-data
which can be passed to the OS::Nova::Server resources.
This template can be replaced with a different implementation via
the resource registry, such that deployers may customize their
first-boot configuration.
resources:
userdata:
type: OS::Heat::MultipartMime
outputs:
# This means get_resource from the parent template will get the userdata, see:
# http://docs.openstack.org/developer/heat/template_guide/composition.html#making-your-template-resource-more-transparent
# Note this is new-for-kilo, an alternative is returning a value then using
# get_attr in the parent template instead.
OS::stack_id:
value: {get_resource: userdata}