Tag: osx

New path for MySQL query log on OSX

Sometimes during development I need to see what SQL queries are executed and listing them in Console.app is maybe the most convenient solution on OSX.

console.app

To see queries in Console

mysqld query log OSX

I just created /etc/mysql/my.cnf with:

[mysqld]
general_log = 1
# general_log_file = /usr/local/mysql/data/mysqld.query.log
general_log_file = /var/log/mysql/mysqld.query.log

slow_query_log = 1
long_query_time = 1 # second
# slow_query_log_file = /usr/local/mysql/data/mysqld.slow.log
slow_query_log_file = /var/log/mysql/mysqld.slow.log
log_queries_not_using_indexes = 0

MySQL server needs own permissions on the parent log dir so:

sudo mkdir /var/log/mysql
sudo chown -R _mysql:_mysql /var/log/mysql

Last step is server restart.

sudo launchctl unload -F /Library/LaunchDaemons/com.oracle.oss.mysql.mysqld.plist
sudo launchctl load -F /Library/LaunchDaemons/com.oracle.oss.mysql.mysqld.plist

On a Linux machine I use multitail as an alternative.

Enabling MySQL 5.7 query logging on OSX

I got used to it that sometimes I need to check the queries run by MySQL. After clean OSX upgrade I forgot to enable it.

So I added the following to /etc/mysql/my.cnf:

[mysqld]

sql_mode=

general_log = 1
general_log_file = /usr/local/mysql/data/mysqld.query.log

slow_query_log = 1
long_query_time = 1 # second
slow_query_log_file = /usr/local/mysql/data/mysqld.slow.log
log_queries_not_using_indexes = 0

The default one that comes with the package is at /usr/local/mysql/support-files/my-default.cnf

There’s also an option to set logging via SQL queries.