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Datasources are sources of configuration data for cloud-init that typically come
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from the user (aka userdata) or come from the stack that created the configuration
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drive (aka metadata). Typical userdata would include files, yaml, and shell scripts
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while typical metadata would include server name, instance id, display name and other
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cloud specific details. Since there are multiple ways to provide this data (each cloud
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solution seems to prefer its own way) internally a datasource abstract class was
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created to allow for a single way to access the different cloud systems methods
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to provide this data through the typical usage of subclasses.
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The current interface that a datasource object must provide is the following:
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.. sourcecode:: python
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def get_userdata(self, apply_filter=False)
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def launch_index(self)
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def is_disconnected(self)
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def get_userdata_raw(self)
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# the data sources' config_obj is a cloud-config formated
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# object that came to it from ways other than cloud-config
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# because cloud-config content would be handled elsewhere
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def get_config_obj(self)
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def get_public_ssh_keys(self)
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def device_name_to_device(self, name)
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def availability_zone(self)
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def get_instance_id(self)
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def get_hostname(self, fqdn=False)
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def get_package_mirror_info(self)
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---------------------------
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---------------------------
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.. include:: ../../sources/configdrive/README.rst
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---------------------------
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.. include:: ../../sources/altcloud/README.rst
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---------------------------
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.. include:: ../../sources/nocloud/README.rst
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See: https://bazaar.launchpad.net/~cloud-init-dev/cloud-init/trunk/files/head:/doc/sources/ovf/
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doc/rtd/topics/datasources.rst
