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======================
cloud-init-datasources
======================
Configures cloud-init to only use an explicit list of data sources.
Cloud-init contains a growing collection of data source modules and most
are enabled by default. This causes cloud-init to query each data source
on first boot. This can cause delays or even boot problems depending on your
environment.
Including this element without setting `DIB_CLOUD_INIT_DATASOURCES` will cause
image builds to fail.
Environment Variables
---------------------
DIB_CLOUD_INIT_DATASOURCES
:Required: Yes
:Default: None
:Description: A comma-separated list of valid data sources to limit the data
sources that will be queried for metadata on first boot.
:Example: ``DIB_CLOUD_INIT_DATASOURCES="Ec2"`` will enable only the Ec2 data
source.
:Example: ``DIB_CLOUD_INIT_DATASOURCES="Ec2, ConfigDrive, OpenStack"`` will
enable the Ec2, ConfigDrive and OpenStack data sources.
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