2018-08-13 05:00:02.305 4572 INFO keystone.common.token_utils [-] Starting key rotation with 2 key files: ['/var/lib/keystone/fernet-keys/0', '/var/lib/keystone/fernet-keys/1']
2018-08-13 05:00:02.313 4572 INFO keystone.common.token_utils [-] Created a new temporary key: /var/lib/keystone/fernet-keys/0.tmp
2018-08-13 05:00:02.315 4572 INFO keystone.common.token_utils [-] Current primary key is: 1
2018-08-13 05:00:02.315 4572 INFO keystone.common.token_utils [-] Next primary key will be: 2
2018-08-13 05:00:02.323 4572 INFO keystone.common.token_utils [-] Promoted key 0 to be the primary: 2
2018-08-13 05:00:02.330 4572 INFO keystone.common.token_utils [-] Become a valid new key: /var/lib/keystone/fernet-keys/0
