Afterburn

This is a small utility, typically used in conjunction with Ignition, which reads metadata from a given cloud-provider and applies it to the system. This can include adding SSH keys and writing cloud-specific attributes into an environment file (e.g. /run/metadata/afterburn), which can then be consumed by systemd service units via EnvironmentFile=.

Support

The supported cloud providers and their respective metadata are listed below. On CoreOS Container Linux, the supported providers and metadata are somewhat different.

• aliyun
  • SSH Keys
  • Attributes
    • AFTERBURNALIYUNEIPV4
    • AFTERBURNALIYUNHOSTNAME
    • AFTERBURNALIYUNIMAGEID
    • AFTERBURNALIYUNINSTANCEID
    • AFTERBURNALIYUNINSTANCETYPE
    • AFTERBURNALIYUNIPV4PRIVATE
    • AFTERBURNALIYUNIPV4PUBLIC
    • AFTERBURNALIYUNREGIONID
    • AFTERBURNALIYUNVPCID
    • AFTERBURNALIYUNZONEID
• aws
  • SSH Keys
  • Attributes
    • AFTERBURNAWSHOSTNAME
    • AFTERBURNAWSPUBLICHOSTNAME
    • AFTERBURNAWSIPV4LOCAL
    • AFTERBURNAWSIPV4PUBLIC
    • AFTERBURNAWSAVAILABILITYZONE
    • AFTERBURNAWSINSTANCEID
    • AFTERBURNAWSINSTANCETYPE
    • AFTERBURNAWSREGION
• azure
  • SSH Keys
  • Attributes
    • AFTERBURNAZUREIPV4DYNAMIC
    • AFTERBURNAZUREIPV4VIRTUAL
    • AFTERBURNAZUREVMSIZE
• cloudstack-configdrive
  • SSH Keys
  • Attributes
    • AFTERBURNCLOUDSTACKAVAILABILITYZONE
    • AFTERBURNCLOUDSTACKINSTANCEID
    • AFTERBURNCLOUDSTACKSERVICEOFFERING
    • AFTERBURNCLOUDSTACKCLOUDIDENTIFIER
    • AFTERBURNCLOUDSTACKLOCALHOSTNAME
    • AFTERBURNCLOUDSTACKVMID
• cloudstack-metadata
  • SSH Keys
  • Attributes
    • AFTERBURNCLOUDSTACKAVAILABILITYZONE
    • AFTERBURNCLOUDSTACKCLOUDIDENTIFIER
    • AFTERBURNCLOUDSTACKHOSTNAME
    • AFTERBURNCLOUDSTACKINSTANCEID
    • AFTERBURNCLOUDSTACKIPV4LOCAL
    • AFTERBURNCLOUDSTACKIPV4PUBLIC
    • AFTERBURNCLOUDSTACKLOCALHOSTNAME
    • AFTERBURNCLOUDSTACKPUBLICHOSTNAME
    • AFTERBURNCLOUDSTACKSERVICEOFFERING
    • AFTERBURNCLOUDSTACKVM_ID
• digitalocean
  • SSH Keys
  • Network Configs
  • Attributes
    • AFTERBURNDIGITALOCEANHOSTNAME
    • AFTERBURNDIGITALOCEANIPV4ANCHOR0
    • AFTERBURNDIGITALOCEANIPV4PUBLIC0
    • AFTERBURNDIGITALOCEANIPV4PRIVATE0
    • AFTERBURNDIGITALOCEANIPV6PUBLIC0
    • AFTERBURNDIGITALOCEANIPV6PRIVATE0
    • AFTERBURNDIGITALOCEANREGION
• exoscale
  • SSH Keys
  • Attributes
    • AFTERBURNEXOSCALEAVAILABILITYZONE
    • AFTERBURNEXOSCALECLOUDIDENTIFIER
    • AFTERBURNEXOSCALEINSTANCEID
    • AFTERBURNEXOSCALELOCALIPV4
    • AFTERBURNEXOSCALEPUBLICIPV4
    • AFTERBURNEXOSCALELOCALHOSTNAME
    • AFTERBURNEXOSCALEPUBLICHOSTNAME
    • AFTERBURNEXOSCALESERVICEOFFERING
    • AFTERBURNEXOSCALEVM_ID
• gcp
  • SSH Keys
  • Attributes
    • AFTERBURNGCPHOSTNAME
    • AFTERBURNGCPIPEXTERNAL0
    • AFTERBURNGCPIPLOCAL0
    • AFTERBURNGCPMACHINE_TYPE
• ibmcloud
  • Attributes
    • AFTERBURNIBMCLOUDINSTANCEID
    • AFTERBURNIBMCLOUDLOCALHOSTNAME
• ibmcloud-classic
  • Attributes
    • AFTERBURNIBMCLOUDCLASSICINSTANCEID
    • AFTERBURNIBMCLOUDCLASSICLOCALHOSTNAME
• openstack-metadata
  • SSH Keys
  • Attributes
    • AFTERBURNOPENSTACKHOSTNAME
    • AFTERBURNOPENSTACKIPV4LOCAL
    • AFTERBURNOPENSTACKIPV4PUBLIC
    • AFTERBURNOPENSTACKINSTANCEID
    • AFTERBURNOPENSTACKINSTANCETYPE
• packet
  • SSH Keys
  • Network Configs
  • Attributes
    • AFTERBURNPACKETHOSTNAME
    • AFTERBURNPACKETPLAN
    • AFTERBURNPACKETIPV4PUBLIC0
    • AFTERBURNPACKETIPV4PUBLICGATEWAY0
    • AFTERBURNPACKETIPV4PRIVATE0
    • AFTERBURNPACKETIPV4PRIVATEGATEWAY0
    • AFTERBURNPACKETIPV6PUBLIC0
    • AFTERBURNPACKETIPV6PUBLICGATEWAY_0
• vagrant-virtualbox
  • Attributes
    • AFTERBURNVAGRANTVIRTUALBOXPRIVATEIPV4
    • AFTERBURNVAGRANTVIRTUALBOX_HOSTNAME

Additionally, some attribute names are reserved for usage by custom metadata providers. These can be safely used by external providers on a platform not supported by Afterburn:

• custom
  • Attributes
    • AFTERBURNCUSTOMHOSTNAME
    • AFTERBURNCUSTOMPUBLICIPV4
    • AFTERBURNCUSTOMPRIVATEIPV4
    • AFTERBURNCUSTOMPUBLICIPV6
    • AFTERBURNCUSTOMPRIVATEIPV6