We had a mysqld crash which appears to be during binlog rotation:
160224 9:51:59 [ERROR] mysqld got signal 11 ;
stack_bottom = 0x7fc43aa2d8d0 thread_stack 0x48400
(full log is attached in
as it appeared in /var/log/messages.
From a cursory investigation, these observations may be relevant:
The crashing mysqld instance was part of a 2-node galera cluster. (The cluster was under construction, and a 3rd node was due to join it later).
A new file with a timestamp of the crash appeared in /var/lib/mysql: 0x009fe611_data.000000. The contents appears to be binary of some sort, and it contains what appears to be schema/tablenames towards the beginning. I suspect the contents may aid diagnostics
The node was running inbound replication - no other activity on the node yet (or elsewhere in the cluster)
Replication is "traditional" - i.e. not using GTID
Parallel replication is not configured - i.e. defaults to single thread
It appears to have happened during (or immediately after) binlog rotation: A new bin log file had been created - 405 bytes long, and with no transactions yet according to mysqlbinlog. The timestamp is in the same second as the crash.
Other nodes (elsewhere in our estate) replicating off the same master did not encounter any problems