954b9de79b
Updating the README for this element to follow our new environment variables convention. Change-Id: I9cf21bd063ea2bfbea7244656af8f3d0e79f20b1
27 lines
956 B
ReStructuredText
27 lines
956 B
ReStructuredText
======================
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cloud-init-datasources
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======================
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Configures cloud-init to only use an explicit list of data sources.
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Cloud-init contains a growing collection of data source modules and most
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are enabled by default. This causes cloud-init to query each data source
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on first boot. This can cause delays or even boot problems depending on your
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environment.
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Including this element without setting `DIB_CLOUD_INIT_DATASOURCES` will cause
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image builds to fail.
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Environment Variables
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---------------------
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DIB_CLOUD_INIT_DATASOURCES
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:Required: Yes
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:Default: None
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:Description: A comma-separated list of valid data sources to limit the data
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sources that will be queried for metadata on first boot.
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:Example: ``DIB_CLOUD_INIT_DATASOURCES="Ec2"`` will enable only the Ec2 data
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source.
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:Example: ``DIB_CLOUD_INIT_DATASOURCES="Ec2, ConfigDrive, OpenStack"`` will
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enable the Ec2, ConfigDrive and OpenStack data sources.
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