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
  • Attributes
    • COREOS_AZURE_IPV4_DYNAMIC
    • COREOS_AZURE_IPV4_VIRTUAL
• 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
• ec2
  • SSH Keys
  • Attributes
    • COREOS_EC2_HOSTNAME
    • COREOS_EC2_IPV4_LOCAL
    • COREOS_EC2_IPV4_PUBLIC
• gce
  • SSH Keys
  • Attributes
    • COREOS_GCE_HOSTNAME
    • COREOS_GCE_IP_EXTERNAL_0
    • COREOS_GCE_IP_LOCAL_0
• packet
  • SSH Keys
  • Attributes
    • COREOS_PACKET_HOSTNAME
    • COREOS_PACKET_IPV4_PUBLIC_0
    • COREOS_PACKET_IPV4_PRIVATE_0
    • COREOS_PACKET_IPV6_PUBLIC_0
• openstack-metadata
  • SSH Keys
  • Attributes
    • COREOS_OPENSTACK_HOSTNAME
    • COREOS_OPENSTACK_IPV4_LOCAL
    • COREOS_OPENSTACK_IPV4_PUBLIC
    • COREOS_OPENSTACK_INSTANCE_ID