MySQL Revision 47 went away this morning with nothing in the error log except this:
100702 09:31:19 mysqld_safe Number of processes running now: 0
100702 09:31:19 mysqld_safe mysqld restarted
We brought mysql up again, checked all tables, then brought it down and upgraded to Revision 51. Now our slaves will not start, reporting:
Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: ‘Could not find first log file name in binary log index file’
The binary logfiles haven’t moved, permissions haven’t changed, and if I FLUSH LOGS on the master, it properly creates a new binary file in the expected place and updates the index file accordingly. The first line in mysql-bin.index is:
and that file exists and is parseable by mysqlbinlog without errors. We’re at a complete loss.