docs/examples/compute/cloudsigma/create_server_with_metadata.py

from libcloud.compute.types import Provider
from libcloud.compute.providers import get_driver

cls = get_driver(Provider.CLOUDSIGMA)
driver = cls("username", "password", region="zrh", api_version="2.0")

name = "test node sizeth metadata"
size = driver.list_sizes()[0]
image = driver.list_images()[0]

metadata = {
    "ssh_public_key": "my public key",
    "role": "database server",
    "region": "zrh",
}

node = driver.create_node(name=name, size=size, image=image, ex_metadata=metadata)
print(node)