Buongiorno,
ho il seguente problema: ho configurato il general log nel my.cnf in modo che punti ad un file fifo:
general_log=1
general_log_file=/var/lib/mysql/mysql_access.fifo
dopodiche` ho applicato un filtro che mi permette di estrarre soltanto le righe che contengono le parole "Connect|Quit" e di inviarle al logger; in modo da monitorare gli accessi.
Tutto funziona bene nella versione 5.1 , nella versione 5.5.37 quando effettuo lo stop del servizio mysql va in crash e si riavvia:
10:50:44 UTC - mysqld got signal 11 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
We will try our best to scrape up some info that will hopefully help
diagnose the problem, but since we have already crashed,
something is definitely wrong and this may fail.
key_buffer_size=8388608
read_buffer_size=131072
max_used_connections=0
max_threads=151
thread_count=0
connection_count=0
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 338508 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
Thread pointer: 0x0
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 0 thread_stack 0x40000
/usr/libexec/mysqld(my_print_stacktrace+0x2e)[0x7f79cf65194e]
/usr/libexec/mysqld(handle_fatal_signal+0x493)[0x7f79cf53a6a3]
/lib64/libpthread.so.0(+0x327de0f710)[0x7f79ced28710]
/usr/libexec/mysqld(_ZN9MYSQL_LOG5closeEj+0x1f6)[0x7f79cf5c36c6]
/usr/libexec/mysqld(_ZN25Log_to_file_event_handler7cleanupEv+0xd)[0x7f79cf5c3c5d]
/usr/libexec/mysqld(+0x2857b9)[0x7f79cf3dd7b9]
/usr/libexec/mysqld(_Z10unireg_endv+0xe)[0x7f79cf3ddb0e]
/usr/libexec/mysqld(+0x2875d9)[0x7f79cf3df5d9]
/usr/libexec/mysqld(kill_server_thread+0xe)[0x7f79cf3df69e]
/lib64/libpthread.so.0(+0x327de079d1)[0x7f79ced209d1]
/lib64/libc.so.6(clone+0x6d)[0x7f79cd227b5d]
The manual page at
http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.
140918 12:50:44 mysqld_safe Number of processes running now: 0
140918 12:50:44 mysqld_safe mysqld restarted
grazie in anticipo per il supporto.
Saluti Federico