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diskimage-builder/elements/cloud-init-datasources
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Adam Gandelman f645287ec4 Add new cloud-init-datasources element 
This moves cloud-init data source configuration to a general purpose
cloud-init-datasources element that can be used to explicitly configure
the list of cloud-init sources that will be queried on first boot.

cloud-init-nocloud now depends on this new element to configure the
datasource_list while continuing to prep the image for a nocloud first boot.

Change-Id: Ibcc3b86d6ca567a23f89b7a1a36bc713e444ef68
Closes-bug: #1316475
2014-05-29 21:54:59 -07:00
..
install.d Add new cloud-init-datasources element 2014-05-29 21:54:59 -07:00
README.md Add new cloud-init-datasources element 2014-05-29 21:54:59 -07:00

README.md

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.

You must define DIB_CLOUD_INIT_DATASOURCES as a comma-separated list of valid data sources to limit the data sources that will be queried for metadata on first boot.

For instance, to enable only the Ec2 datasource:

export `DIB_CLOUD_INIT_DATASOURCES`="Ec2"

Or to enable multiple:

export `DIB_CLOUD_INIT_DATASOURCES`="Ec2, ConfigDrive, OpenStack"

Including this element without setting DIB_CLOUD_INIT_DATASOURCES will cause image builds to fail.