CoreOS Metadata

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. This file can then be consumed by systemd service units via EnvironmentFile=.

Support

The supported cloud providers and their respective metadata are as follows:

• azure
  • SSH Keys
  • Attributes
    • COREOS_AZURE_IPV4_DYNAMIC
    • COREOS_AZURE_IPV4_VIRTUAL
• cloudstack-configdrive
  • SSH Keys
  • Attributes
    • COREOS_CLOUDSTACK_AVAILABILITY_ZONE
    • COREOS_CLOUDSTACK_INSTANCE_ID
    • COREOS_CLOUDSTACK_SERVICE_OFFERING
    • COREOS_CLOUDSTACK_CLOUD_IDENTIFIER
    • COREOS_CLOUDSTACK_LOCAL_HOSTNAME
    • COREOS_CLOUDSTACK_VM_ID
• cloudstack-metadata
  • SSH Keys
  • Attributes
    • COREOS_CLOUDSTACK_AVAILABILITY_ZONE
    • COREOS_CLOUDSTACK_CLOUD_IDENTIFIER
    • COREOS_CLOUDSTACK_HOSTNAME
    • COREOS_CLOUDSTACK_INSTANCE_ID
    • COREOS_CLOUDSTACK_IPV4_LOCAL
    • COREOS_CLOUDSTACK_IPV4_PUBLIC
    • COREOS_CLOUDSTACK_LOCAL_HOSTNAME
    • COREOS_CLOUDSTACK_PUBLIC_HOSTNAME
    • COREOS_CLOUDSTACK_SERVICE_OFFERING
    • COREOS_CLOUDSTACK_VM_ID
• digitalocean
  • SSH Keys
  • Network Configs
  • Attributes
    • COREOS_DIGITALOCEAN_HOSTNAME
    • COREOS_DIGITALOCEAN_IPV4_ANCHOR_0
    • COREOS_DIGITALOCEAN_IPV4_PUBLIC_0
    • COREOS_DIGITALOCEAN_IPV4_PRIVATE_0
    • COREOS_DIGITALOCEAN_IPV6_PUBLIC_0
    • COREOS_DIGITALOCEAN_IPV6_PRIVATE_0
    • COREOS_DIGITALOCEAN_REGION
• ec2
  • SSH Keys
  • Attributes
    • COREOS_EC2_HOSTNAME
    • COREOS_EC2_IPV4_LOCAL
    • COREOS_EC2_IPV4_PUBLIC
    • COREOS_EC2_AVAILABILITY_ZONE
    • COREOS_EC2_INSTANCE_ID
    • COREOS_EC2_REGION
• gce
  • SSH Keys
  • Attributes
    • COREOS_GCE_HOSTNAME
    • COREOS_GCE_IP_EXTERNAL_0
    • COREOS_GCE_IP_LOCAL_0
• openstack-metadata
  • SSH Keys
  • Attributes
    • COREOS_OPENSTACK_HOSTNAME
    • COREOS_OPENSTACK_IPV4_LOCAL
    • COREOS_OPENSTACK_IPV4_PUBLIC
    • COREOS_OPENSTACK_INSTANCE_ID
• oracle-oci
  • SSH Keys
  • Attributes
    • COREOS_ORACLE_OCI_DISPLAY_NAME
    • COREOS_ORACLE_OCI_INSTANCE_ID
    • COREOS_ORACLE_OCI_REGION
• packet
  • SSH Keys
  • Network Configs
  • Attributes
    • COREOS_PACKET_HOSTNAME
    • COREOS_PACKET_IPV4_PUBLIC_0
    • COREOS_PACKET_IPV4_PRIVATE_0
    • COREOS_PACKET_IPV6_PUBLIC_0
• vagrant-virtualbox
  • Attributes
    • COREOS_VAGRANT_VIRTUALBOX_PRIVATE_IPV4
    • COREOS_VAGRANT_VIRTUALBOX_HOSTNAME