[mysql] Location of my.cnf file on macOS

I'm trying to follow along this tutorial to enable remote access to MySQL. The problem is, where should my.cnf file be located? I'm using Mac OS X Lion.

macOS High Sierra version 10.13.6

mysql Ver 14.14 Distrib 5.7.22, for osx10.13 (x86_64) using EditLine wrapper Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved

Default options are read from the following files in the given order:

/etc/my.cnf 
/etc/mysql/my.cnf 
/usr/local/etc/my.cnf 
~/.my.cnf

For MySQL 5.7 on Mac OS X El Capitan: /usr/local/mysql/etc/my.cnf

Copy default conf from /usr/local/mysql/support-files/my-default.cnf

I checked in macOS Sierra, the homebrew installed MySql 5.7.12

The support files are located at

/usr/local/opt/mysql/support-files

Just copy my-default.cnf as /etc/my.cnf or /etc/mysql/my.cnf and the configuration will be picked up on restart.

In mysql 5.6.22, which I installed it from Homebrew, the path of my.cnf is

/usr/local/opt/mysql/my.cnf 

For Mac , what worked for me is creating a .my.cnf file in my ~ path. Hope this helps.

For MAMP 3.5 Mac El Capitan, create a separate empty config file and write your additional settings for mysql

sudo vim /Applications/MAMP/Library/my.cnf

And Add like this

[mysqld]
max_allowed_packet = 256M

You can open a terminal and type locate my.cnf

If you are using macOS Sierra and the file doesn't exists, run

mysql --help or mysql --help | grep my.cnf

to see the possible locations and loading/reading sequence of my.cnf for mysql then create my.cnf file in one of the suggested directories then add the following line

[mysqld] sql_mode = STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

You can sudo touch /{preferred-path}/my.cnf then edit the file to add sql mode by

sudo nano /{preferred-path}/my.cnf

Then restart mysql, voilaah you are good to go. happy coding

You can create your file under any directory you want. After creation, you can "tell" the path to mysql config:

I'm running MacOS Catalina(10.15.3) and find my.cnf in /usr/local/etc.

Copy /usr/local/opt/mysql/support-files/my-default.cnf as /etc/my.cnf or /etc/mysql/my.cnf and then restart mysql.

You can check the file

/usr/local/bin/mysql.server and see from where my.conf is being read from.

Usually it is from /etc/my.cnf or ~/my.cnf or ~/.my.cnf

In my case, the file did not exist. In MySQL Workbench I went to OPTIONS FILE and found some default values. I clicked apply. It asked for permission. It then created the my.cnf file under /etc. However, it is very important to keep in mind that the first time you click "apply", you do not make any changes to the default configuration. Once the file has been created, you can make changes which will be applied when you click "apply". Otherwise you will not be shown the apply button when you make changes.

READ THE DOCS!

The MySQL Documents for which version you are using will help. It is usually described as a Options File or MySQL Config File.
The docs have the location of these files in the documentation, As well as other VITAL information like the location & small examples of what the config file must look like.

MySQL Version 8

MySQL Version 5.7

MySQL Version 5.6

MySQL Version 5.5

MySQL Version 5.6 Japanese

Important Notes:

On Unix platforms, MySQL ignores configuration files that are world-writable.

This is intentional as a security measure.

In other words, if you have the wrong permissions set on your config file the will NOT load.

Example of initial setup permission of one of the config files:

RIZZOMBP$ ls -lah /etc/my.cnf
-rw-r--r--  1 myusername  wheel     0B Feb 25 20:40 /etc/my.cnf

Note:

It is possible to use !include directives in option files to include other option files and !includedir to search specific directories for option files.....

...MySQL makes no guarantee about the order in which option files in the directory will be read...

Any files to be found and included using the !includedir directive on Unix operating systems must have file names ending in .cnf. On Windows, this directive checks for files with the .ini or .cnf extension.

Examples of how to find your location of your config or log files ect.:

SQL

This will not show you the config file but will help you locate your installation files/folders.

MySQL Version 5.7 & 8+

SELECT * FROM PERFORMANCE_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_VALUE LIKE '%\/%';

MySQL Version <= 5.6

SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_VALUE LIKE '%\/%';

SHELL/Terminal

RIZZOMBP$ mysql --help | grep "Default options" -A 1

Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /usr/local/mysql/etc/my.cnf ~/.my.cnf

Above Command Credit To: Erwin Mayer from ServerFault

RIZZOMBP$ mysqld --verbose --help | grep '/my.cnf' -B 1

Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /usr/local/mysql/etc/my.cnf ~/.my.cnf

OR

RIZZOMBP$ ps aux | grep -i mysqld | grep -v $USER

_mysql 106 0.4 2.5 4232336 422112 ?? Ss 7:01PM 0:57.12
/usr/local/mysql/bin/mysqld
--user=_mysql
--basedir=/usr/local/mysql
--datadir=/usr/local/mysql/data
--plugin-dir=/usr/local/mysql/lib/plugin
--log-error=/usr/local/mysql/data/mysqld.local.err
--pid-file=/usr/local/mysql/data/mysqld.local.pid
--keyring-file-data=/usr/local/mysql/keyring/keyring
--early-plugin-load=keyring_file=keyring_file.so

Sample File

Should you need a detailed Reference Sample my.cnf:

1. https://gist.github.com/search?utf8=%E2%9C%93&q=my.cnf+mysql&ref=searchresults
2. https://www.linode.com/community/questions/5749/mysql-sample-config-files
3. https://www.fromdual.com/mysql-configuration-file-sample

No affiliation/association to the URL's

My System:

RIZZOMBP$ sw_vers
ProductName:    Mac OS X
ProductVersion: 10.14.3
BuildVersion:   18D109

RIZZOMBP$ mysql -V
mysql  Ver 8.0.15 for macos10.14 on x86_64 (MySQL Community Server - GPL)

RIZZOMBP$ mysqld -V
/usr/local/mysql-8.0.15-macos10.14-x86_64/bin/mysqld 
Ver 8.0.15 for macos10.14 on x86_64 (MySQL Community Server - GPL)

So none of these things worked for me. I am using the current dmg install of mysql community server. ps shows that all of the most critical parameters normally in my.cnf are passed on the command line, and I couldn't figure out where that was coming from. After doing a full text search of my box I found it in:

/Library/LaunchDaemons/com.oracle.oss.mysql.mysqld.plist

So you can either change them there, or take them out so it will actually respect the ones you have in your my.cnf wherever you decided to put it.

Enjoy!

Example of the file info found in that file:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>             <string>com.oracle.oss.mysql.mysqld</string>
    <key>ProcessType</key>       <string>Interactive</string>
    <key>Disabled</key>          <false/>
    <key>RunAtLoad</key>         <true/>
    <key>KeepAlive</key>         <true/>
    <key>SessionCreate</key>     <true/>
    <key>LaunchOnlyOnce</key>    <false/>
    <key>UserName</key>          <string>_mysql</string>
    <key>GroupName</key>         <string>_mysql</string>
    <key>ExitTimeOut</key>       <integer>600</integer>
    <key>Program</key>           <string>/usr/local/mysql/bin/mysqld</string>
    <key>ProgramArguments</key>
        <array>
            <string>/usr/local/mysql/bin/mysqld</string>
            <string>--user=_mysql</string>
            <string>--basedir=/usr/local/mysql</string>
            <string>--datadir=/usr/local/mysql/data</string>
            <string>--plugin-dir=/usr/local/mysql/lib/plugin</string>
            <string>--log-error=/usr/local/mysql/data/mysqld.local.err</string>
            <string>--pid-file=/usr/local/mysql/data/mysqld.local.pid</string>
             <string>--keyring-file-data=/usr/local/mysql/keyring/keyring</string>
             <string>--early-plugin-load=keyring_file=keyring_file.so</string>

        </array>
    <key>WorkingDirectory</key>  <string>/usr/local/mysql</string>
</dict>
</plist>

macOs sierra 10.12.6 mysql version : 5.7.18_1 I run locate my.cnf and the path is

/usr/local/etc/my.cnf

hope it help.

I don't know which version of MySQL you're using, but here are possible locations of the my.cnf file for version 5.5 (taken from here) on Mac OS X:

1. /etc/my.cnf
2. /etc/mysql/my.cnf
3. SYSCONFDIR/my.cnf
4. $MYSQL_HOME/my.cnf
5. defaults-extra-file (the file specified with --defaults-extra-file=path, if any)
6. ~/.my.cnf

After the 5.7.18 version of MySQL, it does not provide the default configuration file in support-files directory. So you can create my.cnf file manually in the location where MySQL will read, like /etc/mysql/my.cnf, and add the configuration you want to add in the file.

rDefault options are read from the following files in the given order: /etc/my.cnf /etc/mysql/my.cnf /usr/local/mysql/etc/my.cnf ~/.my.cnf

I am using mysql version 5.7.17 in macOS High Sierra version 10.13.3 and I have found the mysql config file here.

cd /usr/local/mysql/support-files/my-default.cnf

Open Terminal and use below command:

sudo find / -name my.cnf

In case of Mac OS X Maverick when MySQL is installed via Homebrew it's located at /usr/local/opt/mysql/my.cnf

For me in sierra version

copy the default configuration at:

/usr/local/Cellar/mysql/5.6.27/support-files/my-default.cnf

to

/usr/local/Cellar/mysql/5.6.27/my.cnf

I'm running MacOS Mojave (10.14.6) and to get MySQL to recognize my config file, I had to place it in /usr/local/mysql-5.7.26-macos10.14-x86_64/etc/my.cnf. Also I have a symbolic link pointing to it from /usr/local/@mysql/etc/my.cnf .

I was trying to turn off sql_mode=only_full_group_by and setting that option in the config file was the only way I could get the setting to persist across sessions. The contents of the config file are:

[mysqld]
sql_mode=NO_ENGINE_SUBSTITUTION

I'm using the native install of MySQL, not the Homebrew set up.

The current MySQL package for Mac OS X Mavericks (mysql-5.6.17-osx10.7-x86_64 at the time of this writing) automatically creates a my.cnf during installation.

It is located at /usr/local/mysql-5.6.17-osx10.7-x86_64/my.cnf
Adapt your path according to your version.

For mysql 8.0.19, I finally found the my.cnf here: /usr/local/opt/mysql/.bottle/etc I copied it to /usr/local/opt/mysql/ and modified it. Then I restart the mysql service, it works.

/private/etc/my.cnf for Catalina

it should be usually under /usr/local/etc on mac if you do not find it you can create one

In general, on Unix and Unix-like systems, MySQL/MariaDB programs read config/startup files in the following locations (in the specified order):

• /etc/my.cnf - Global
• /etc/mysql/my.cnf - Global

• SYSCONFDIR/my.cnf - Global

  SYSCONFDIR represents the directory specified with the SYSCONFDIR option to CMake when MySQL was built. By default, this is the etc directory located under the compiled-in installation directory.

• $MYSQL_HOME/my.cnf - Server-specific (server only)

  MYSQL_HOME is an environment variable containing the path to the directory in which the server-specific my.cnf file resides. If MYSQL_HOME is not set and you start the server using the mysqld_safe program, mysqld_safe sets it to BASEDIR, the MySQL base installation directory.

• file specified with --defaults-extra-file=path if any

• ~/.my.cnf - User-specific
• ~/.mylogin.cnf - User-specific (clients only)

^{Source: Using Option Files.}

Note: On Unix platforms, MySQL ignores configuration files that are world-writable. This is intentional as a security measure.

Additionally on Mac there is a simple way to check it.

1. Run: sudo fs_usage | grep my.cnf

   ^{This will report any filesystem activity in real-time related to that file.}

2. In another Terminal, restart your MySQL/MariaDB, e.g.

   brew services restart mysql
   

   or:

   brew services restart mariadb
   

3. On terminal with fs_usage, the proper location should be shown, e.g.

   15:52:22  access            /usr/local/Cellar/mariadb/10.1.14/my.cnf                                         0.000002   sh          
   

   So if the file doesn't exist, create one.