Fernet 토큰

데이터베이스에서 유지해야하는 UUID 토큰과는 달리, Fernet 토큰은 비 영구적으로 사용할 수 있습니다. 배포자는 keystone.conf에서 [token] provider = keystone.token.providers.fernet.Provider를 사용하여 Fernet 토큰 제공자를 활성화할 수 있습니다.

Fernet token는 대칭 암호화 키가 필요합니다. keystone-manage fornet_setup를 사용하여 설정할 수 있으며, keystone-manage fernet_rotate를 사용하여 일정 기간동안 매번 확인합니다. 이러한 키는 다중 노드(또는 다중 region) 배포시 모든 Keystone 노드에서 공유됩니다. 그리고 한 노드에 의해 생성된 토큰이 즉시 다른 검증이 가능합니다.
https://wiki.openstack.org/wiki/ReleaseNotes/Kilo/ko#Fernet_.ED.86.A0.ED.81.B0
http://dolphm.com/openstack-keystone-fernet-tokens/

# vim /etc/keystone/keystone.conf
..............
[token]
provider = uuid

# service apache2 restart

# openstack token issue
+------------+----------------------------------+
| Field      | Value                            |
+------------+----------------------------------+
| expires    | 2016-07-07T02:05:00.216935Z      |
| id         | e182641670e24e09bd12c9651efa4afc |
| project_id | cc15238cf5ed4d708f53523c80b321cc |
| user_id    | d53e7a93b05342e9a0792505df497894 |
+------------+----------------------------------+

# vim /etc/keystone/keystone.conf
[token]
..............
provider = fernet

# service apache2 restart

# openstack token issue
+------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field      | Value                                                                                                                                                                                   |
+------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| expires    | 2016-07-07T02:07:05.291208Z                                                                                                                                                             |
| id         | gAAAAABXfas5baUnIUsMkBfTM4Imxm0GBHX9SLbSieDuCzk8KV2-mk6dIurP4DaaHfpZJynOolY6kOABUtBKiwpiI1t-meR-fipNl9aYDzGczb9Qf1pzEiyVT1lqJa_1-GniHHuGEQtWsI0luRG7cOG73m3sT2H4mrzz5esxP78kQyY8gpd49AA |
| project_id | cc15238cf5ed4d708f53523c80b321cc                                                                                                                                                        |
| user_id    | d53e7a93b05342e9a0792505df497894                                                                                                                                                        |
+------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+