promenade/promenade/templates/master/etc/kubernetes/cfssl/csr-configs/admin.json

{
  "CN": "admin",
  "hosts": [
    "{{ current_node['hostname'] }}",
    "{{ current_node['ip'] }}"
  ],
  "names": [
    {
      "O": "system:masters"
    }
  ],
  "key": {
    "algo": "rsa",
    "size": 2048
  }
}