{
    "kernel_id": {
        "type": ["null", "string"],
        "pattern": "^([0-9a-fA-F]){8}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){12}$",
        "description": "ID of image stored in Glance that should be used as the kernel when booting an AMI-style image."
    },
    "ramdisk_id": {
        "type": ["null", "string"],
        "pattern": "^([0-9a-fA-F]){8}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){12}$",
        "description": "ID of image stored in Glance that should be used as the ramdisk when booting an AMI-style image."
    },
    "instance_uuid": {
        "type": "string",
        "description": "Metadata which can be used to record which instance this image is associated with. (Informational only, does not create an instance snapshot.)"
    },
    "architecture": {
        "description": "Operating system architecture as specified in https://docs.openstack.org/python-glanceclient/latest/cli/property-keys.html",
        "type": "string"
    },
    "os_distro": {
        "description": "Common name of operating system distribution as specified in https://docs.openstack.org/python-glanceclient/latest/cli/property-keys.html",
        "type": "string"
    },
    "os_version": {
        "description": "Operating system version as specified by the distributor",
        "type": "string"
    }
}