** Description changed: - The Keystone token flush job can get into a state where it will never + [Impact] + + * The Keystone token flush job can get into a state where it will never complete because the transaction size exceeds the mysql galara transaction size - wsrep_max_ws_size (1073741824). + [Test Case] - Steps to Reproduce: 1. Authenticate many times 2. Observe that keystone token flush job runs (should be a very long time depending on disk) >20 hours in my environment 3. Observe errors in mysql.log indicating a transaction that is too large - Actual results: Expired tokens are not actually flushed from the database without any errors in keystone.log. Only errors appear in mysql.log. - Expected results: Expired tokens to be removed from the database + [Additional info:] - Additional info: - It is likely that you can demonstrate this with less than 1 million tokens as the >1 million token table is larger than 13GiB and the max transaction size is 1GiB, my token bench-marking Browbeat job creates more than needed. + It is likely that you can demonstrate this with less than 1 million + tokens as the >1 million token table is larger than 13GiB and the max + transaction size is 1GiB, my token bench-marking Browbeat job creates + more than needed. Once the token flush job can not complete the token table will never decrease in size and eventually the cloud will run out of disk space. Furthermore the flush job will consume disk utilization resources. This was demonstrated on slow disks (Single 7.2K SATA disk). On faster disks you will have more capacity to generate tokens, you can then generate the number of tokens to exceed the transaction size even faster. Log evidence: [root@overcloud-controller-0 log]# grep " Total expired" /var/log/keystone/keystone.log 2016-12-08 01:33:40.530 21614 INFO keystone.token.persistence.backends.sql [-] Total expired tokens removed: 1082434 2016-12-09 09:31:25.301 14120 INFO keystone.token.persistence.backends.sql [-] Total expired tokens removed: 1084241 2016-12-11 01:35:39.082 4223 INFO keystone.token.persistence.backends.sql [-] Total expired tokens removed: 1086504 2016-12-12 01:08:16.170 32575 INFO keystone.token.persistence.backends.sql [-] Total expired tokens removed: 1087823 2016-12-13 01:22:18.121 28669 INFO keystone.token.persistence.backends.sql [-] Total expired tokens removed: 1089202 - [root@overcloud-controller-0 log]# tail mysqld.log + [root@overcloud-controller-0 log]# tail mysqld.log 161208 1:33:41 [Warning] WSREP: transaction size limit (1073741824) exceeded: 1073774592 161208 1:33:41 [ERROR] WSREP: rbr write fail, data_len: 0, 2 161209 9:31:26 [Warning] WSREP: transaction size limit (1073741824) exceeded: 1073774592 161209 9:31:26 [ERROR] WSREP: rbr write fail, data_len: 0, 2 161211 1:35:39 [Warning] WSREP: transaction size limit (1073741824) exceeded: 1073774592 161211 1:35:40 [ERROR] WSREP: rbr write fail, data_len: 0, 2 161212 1:08:16 [Warning] WSREP: transaction size limit (1073741824) exceeded: 1073774592 161212 1:08:17 [ERROR] WSREP: rbr write fail, data_len: 0, 2 161213 1:22:18 [Warning] WSREP: transaction size limit (1073741824) exceeded: 1073774592 161213 1:22:19 [ERROR] WSREP: rbr write fail, data_len: 0, 2 + Disk utilization issue graph is attached. The entire job in that graph + takes from the first spike is disk util(~5:18UTC) and culminates in + about ~90 minutes of pegging the disk (between 1:09utc to 2:43utc). - Disk utilization issue graph is attached. The entire job in that graph takes from the first spike is disk util(~5:18UTC) and culminates in about ~90 minutes of pegging the disk (between 1:09utc to 2:43utc). + [Regression Potential] + * Not identified
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1649616 Title: Keystone Token Flush job does not complete in HA deployed environment To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/+bug/1649616/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
