Running command from hand does not work as expected -> the slowlog is not recreated. 2013/5/23 Eric Bergen <eric.bergen@gmail.com>

Strange. I don't have a 5.5.30 build handy but I tried this on my trunk build of mariadb using the sql command and it works:

ebergen@santa:(~/store/mysql/standalone_mariadb) ls -li mysql/slow.log 52430026 -rw-rw----. 1 ebergen ebergen 244 May 23 11:56 mysql/slow.log

ebergen@santa:(~/store/mysql/standalone_mariadb) mv mysql/slow.log{,.old}

ebergen@santa:(~/store/mysql/standalone_mariadb) ls -li mysql/slow.log ls: cannot access mysql/slow.log: No such file or directory

ebergen@santa:(~/store/mysql/standalone_mariadb) ./con Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 4 Server version: 5.5.5-10.0.2-MariaDB-log Source distribution

Copyright (c) 2000, 2012, Oracle, Monty Program Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> flush slow logs; Query OK, 0 rows affected (0.04 sec)

MariaDB [(none)]> Ctrl-C -- exit! Aborted

ebergen@santa:(~/store/mysql/standalone_mariadb) ls -li mysql/slow.log* 52430011 -rw-rw----. 1 ebergen ebergen 244 May 23 11:59 mysql/slow.log 52430026 -rw-rw----. 1 ebergen ebergen 244 May 23 11:56 mysql/slow.log.old

Same with mysqladmin: ebergen@santa:(~/store/mysql/standalone_mariadb) mv mysql/slow.log{,.old}

ebergen@santa:(~/store/mysql/standalone_mariadb) ls -li mysql/slow.log* 52430011 -rw-rw----. 1 ebergen ebergen 488 May 23 12:01 mysql/slow.log.old

ebergen@santa:(~/store/mysql/standalone_mariadb) mysqladmin -S ./mysql.sock flush-logs

ebergen@santa:(~/store/mysql/standalone_mariadb) ls -li mysql/slow.log* 52430026 -rw-rw----. 1 ebergen ebergen 244 May 23 12:02 mysql/slow.log 52430011 -rw-rw----. 1 ebergen ebergen 488 May 23 12:01 mysql/slow.log.old

Are you capturing errors from your crontab? Does running the command by hand work?

On Thu, May 23, 2013 at 1:11 AM, Rafał Radecki <radecki.rafal@gmail.com> wrote:

...

Hi All.

I use: MariaDB-server-5.5.30-1.x86_64 on CentOS release 6.4 (Final) 2.6.32-358.el6.x86_64

"flush logs" or "flush slow logs" does not recreate the file. In https://dev.mysql.com/doc/refman/5.5/en/flush.html there is "With no log_type option, FLUSH LOGS closes and reopens all log files." and "With a log_type option, only the specified log type is flushed." but neither command recreates the log file.

I rotate slowlog through crontab: mv /var/log/mysqld-slow.log /var/log/mysqld-slow.log.old ; mysqladmin flush-logs

Is it a bug or should it be so for some reason?

Best regards, Rafal.

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-- Eric Bergen eric.bergen@gmail.com http://www.ebergen.net