MySQL DBA - Tips and Techniques Magazine

MySQL DBA - Tips and Techniques Magazine

13 Nov 2014

Set up slow query log

slow_query_log       = 1

slow_query_log_file  = /ebill-slave-1/mysql-logs/mysqld-slow.log

long_query_time      = 6000

log-queries-not-using-indexes

log-slow-admin-statements

 

max_connections=13000

 

..and

 

cd mk-myacct-dbslave-2/ebill-slave-2/mysql-logs >

 

 

touch mysqld-slow.log

 

chown mysql:mysql mysqld-slow.log

 

chmod 755 mysqld-slow.log

 

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1 comment:

  1. Daniël van Eeden15 November 2014 at 10:46

    chmod 755 seems to be too much, 644 would be better.

    The slow logs can be consumed by mysqldumpslow or pt-query-digest from the Percona Toolkit.
    For 5.6 I like to use performance_schema (with SYS) instead of the slow log.


    http://dev.mysql.com/doc/refman/5.6/en/mysqldumpslow.html
    http://www.percona.com/doc/percona-toolkit/2.2/pt-query-digest.html
    https://github.com/MarkLeith/mysql-sys

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