2018-07-19 20:00:02.251 4657 INFO keystone.common.token_utils [-] Starting key rotation with 2 key files: ['/var/lib/keystone/fernet-keys/0', '/var/lib/keystone/fernet-keys/1']
2018-07-19 20:00:02.260 4657 INFO keystone.common.token_utils [-] Created a new temporary key: /var/lib/keystone/fernet-keys/0.tmp
2018-07-19 20:00:02.260 4657 INFO keystone.common.token_utils [-] Current primary key is: 1
2018-07-19 20:00:02.261 4657 INFO keystone.common.token_utils [-] Next primary key will be: 2
2018-07-19 20:00:02.268 4657 INFO keystone.common.token_utils [-] Promoted key 0 to be the primary: 2
2018-07-19 20:00:02.276 4657 INFO keystone.common.token_utils [-] Become a valid new key: /var/lib/keystone/fernet-keys/0
