79807e11a1
From RFC2606: To reduce the likelihood of conflict and confusion, a few top level domain names are reserved for use in private testing, as examples in documentation, and the like. Currently the documentation contains URLs that point to mycloud.com, which is registered and not affiliated with OpenStack. It's better to use example.com which exists for this purpose. Change-Id: I7ebd9b2c0d650f15e5924798cc54611d47961f8f
224 lines
7.2 KiB
ReStructuredText
224 lines
7.2 KiB
ReStructuredText
About This Extension
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====================
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The config-drive extension enables attaching a separate drive to the Compute guest on instance create. It is used with the OpenStack Compute 1.1 API to write configuration data into guest for those guests whose root filesystems cannot be mounted by the Compute host.
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To use this extension, you must have installed Compute, with libvirt or Xen using local disk.
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To obtain current information the extensions available to you, issue an EXTENSION query on the OpenStack system where it is installed, such as http://example.com/v1.1/tenant/extensions.
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Extension Overview
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------------------
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Name
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Config Drive
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Namespace
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http://docs.openstack.org/ext/config-drive/api/v1.1
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Alias
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ORG-EXT
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Contact
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Christopher MacGown <chris@pistoncloud.com>
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Status
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Alpha
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Extension Version
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v1.0 (2011-09-16)
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Dependencies
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Compute API 1.1
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Doc Link (PDF)
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http://
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Doc Link (WADL)
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http://
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Short Description
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This extension enables the assignment of config-drives to a
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compute guest on instance create running in an OpenStack cloud.
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Sample Query Responses
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----------------------
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As shown below, responses to an EXTENSION query in XML or JSON provide basic information about the extension.
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Extension Query Response: XML::
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TBD
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.. todo:: Provide example of extension query XML response.
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Extension Query Response: JSON::
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TBD
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.. todo:: Provide example of extension query JSON response.
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Document Change History
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-----------------------
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============= =====================================
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Revision Date Summary of Changes
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2011-09-16 Initial draft
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============= =====================================
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Summary of Changes
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==================
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This extension to the OpenStack Compute API allows the addition of a configuration drive to an instance.
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New Action
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----------
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None
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New Faults
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----------
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None
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New Headers
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-----------
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None
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New Resources
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-------------
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This extension to the OpenStack Compute API adds the following resources:
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A config_drive attribute to the servers API that is None by default, but can optionally be True or the imageRef of a config-drive image.
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Upon instance create, a guest built with a True config_drive attribute will create a local volume and partition it as a fat32 drive, all passed in metadata, networks, and keys will be written to the config_drive which is associated as the last available disk on the instance.
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Upon instance create, a guest built with an imageRef config_drive attribute will create a local volume from the image.
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New States
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----------
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Changes to the Cloud Servers Specification
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------------------------------------------
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In section 4.1.2 (Create Servers) of the API Specification: Examples 4.3 and 4.4 should optionally add the config-drive attribute as in the below examples:
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Example XML with config_drive attribute = True:
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::
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<?xml version="1.0" encoding="UTF-8"?>
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<server xmlns="http://docs.openstack.org/compute/api/v1.1"
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imageRef="http://servers.api.openstack.org/1234/images/52415800-8b69-11e0-9b19-734f6f006e54"
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flavorRef="52415800-8b69-11e0-9b19-734f1195ff37"
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name="new-server-test"
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config=drive="True"
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>
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<metadata>
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<meta key="My Server Name">Apache1</meta>
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</metadata>
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<personality>
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<file path="/etc/banner.txt">
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ICAgICAgDQoiQSBjbG91ZCBkb2VzIG5vdCBrbm93IHdoeSBp
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dCBtb3ZlcyBpbiBqdXN0IHN1Y2ggYSBkaXJlY3Rpb24gYW5k
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IGF0IHN1Y2ggYSBzcGVlZC4uLkl0IGZlZWxzIGFuIGltcHVs
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c2lvbi4uLnRoaXMgaXMgdGhlIHBsYWNlIHRvIGdvIG5vdy4g
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QnV0IHRoZSBza3kga25vd3MgdGhlIHJlYXNvbnMgYW5kIHRo
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ZSBwYXR0ZXJucyBiZWhpbmQgYWxsIGNsb3VkcywgYW5kIHlv
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dSB3aWxsIGtub3csIHRvbywgd2hlbiB5b3UgbGlmdCB5b3Vy
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c2VsZiBoaWdoIGVub3VnaCB0byBzZWUgYmV5b25kIGhvcml6
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b25zLiINCg0KLVJpY2hhcmQgQmFjaA==
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</file>
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</personality>
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</server>
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Example XML with config_drive attribute is an imageRef:
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::
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<?xml version="1.0" encoding="UTF-8"?>
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<server xmlns="http://docs.openstack.org/compute/api/v1.1"
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imageRef="http://servers.api.openstack.org/1234/images/
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52415800-8b69-11e0-9b19-734f6f006e54"
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flavorRef="52415800-8b69-11e0-9b19-734f1195ff37"
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name="new-server-test"
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config_drive="http://servers.api.openstack.org/1234/images/52415800-8b69-1341-9b19-734f6f006e54"
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>
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<metadata>
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<meta key="My Server Name">Apache1</meta>
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</metadata>
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<personality>
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<file path="/etc/banner.txt">
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ICAgICAgDQoiQSBjbG91ZCBkb2VzIG5vdCBrbm93IHdoeSBp
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dCBtb3ZlcyBpbiBqdXN0IHN1Y2ggYSBkaXJlY3Rpb24gYW5k
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IGF0IHN1Y2ggYSBzcGVlZC4uLkl0IGZlZWxzIGFuIGltcHVs
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c2lvbi4uLnRoaXMgaXMgdGhlIHBsYWNlIHRvIGdvIG5vdy4g
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QnV0IHRoZSBza3kga25vd3MgdGhlIHJlYXNvbnMgYW5kIHRo
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ZSBwYXR0ZXJucyBiZWhpbmQgYWxsIGNsb3VkcywgYW5kIHlv
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dSB3aWxsIGtub3csIHRvbywgd2hlbiB5b3UgbGlmdCB5b3Vy
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c2VsZiBoaWdoIGVub3VnaCB0byBzZWUgYmV5b25kIGhvcml6
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b25zLiINCg0KLVJpY2hhcmQgQmFjaA==
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</file>
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</personality>
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</server>
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Example JSON with config_drive attribute is true:
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::
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{
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"server" : {
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"name" : "new-server-test",
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"imageRef" : "http://servers.api.openstack.org/1234/images/52415800-8b69-11e0-9b19-734f6f006e54",
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"flavorRef" : "52415800-8b69-11e0-9b19-734f1195ff37",
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"config_drive" : "true",
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"metadata" : {
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"My Server Name" : "Apache1"
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},
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"personality" : [
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{
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"path" : "/etc/banner.txt",
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"contents" : "ICAgICAgDQoiQSBjbG91ZCBkb2VzIG5vdCBrbm93IHdoeSBp
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dCBtb3ZlcyBpbiBqdXN0IHN1Y2ggYSBkaXJlY3Rpb24gYW5k
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IGF0IHN1Y2ggYSBzcGVlZC4uLkl0IGZlZWxzIGFuIGltcHVs
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c2lvbi4uLnRoaXMgaXMgdGhlIHBsYWNlIHRvIGdvIG5vdy4g
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QnV0IHRoZSBza3kga25vd3MgdGhlIHJlYXNvbnMgYW5kIHRo
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ZSBwYXR0ZXJucyBiZWhpbmQgYWxsIGNsb3VkcywgYW5kIHlv
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dSB3aWxsIGtub3csIHRvbywgd2hlbiB5b3UgbGlmdCB5b3Vy
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c2VsZiBoaWdoIGVub3VnaCB0byBzZWUgYmV5b25kIGhvcml6
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b25zLiINCg0KLVJpY2hhcmQgQmFjaA=="
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}
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]
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}
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}
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Example JSON with config_drive attribute is an imageRef:
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::
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{
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"server" : {
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"name" : "new-server-test",
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"imageRef" : "http://servers.api.openstack.org/1234/images/52415800-8b69-11e0-9b19-734f6f006e54",
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"flavorRef" : "52415800-8b69-11e0-9b19-734f1195ff37",
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"config_drive" : "http://servers.api.openstack.org/1234/images/52415800-8b69-11e0-9b19-734f6f006e54",
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"metadata" : {
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"My Server Name" : "Apache1"
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},
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"personality" : [
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{
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"path" : "/etc/banner.txt",
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"contents" : "ICAgICAgDQoiQSBjbG91ZCBkb2VzIG5vdCBrbm93IHdoeSBp
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dCBtb3ZlcyBpbiBqdXN0IHN1Y2ggYSBkaXJlY3Rpb24gYW5k
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IGF0IHN1Y2ggYSBzcGVlZC4uLkl0IGZlZWxzIGFuIGltcHVs
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c2lvbi4uLnRoaXMgaXMgdGhlIHBsYWNlIHRvIGdvIG5vdy4g
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QnV0IHRoZSBza3kga25vd3MgdGhlIHJlYXNvbnMgYW5kIHRo
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ZSBwYXR0ZXJucyBiZWhpbmQgYWxsIGNsb3VkcywgYW5kIHlv
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dSB3aWxsIGtub3csIHRvbywgd2hlbiB5b3UgbGlmdCB5b3Vy
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c2VsZiBoaWdoIGVub3VnaCB0byBzZWUgYmV5b25kIGhvcml6
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b25zLiINCg0KLVJpY2hhcmQgQmFjaA=="
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}
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]
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}
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}
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