rDefault选项按照给定的顺序从以下文件中读取: /etc/my.cnf /etc/mysql/my.cnf /usr/local/mysql/etc/my.cnf ~/.my.cnf

mysql 8.0.19，我终于找到my.cnf在这里: /usr/local/opt/mysql/.bottle/etc 我把它复制到 /usr/local/opt/mysql/ 并进行了修改。然后我重新启动mysql服务，它工作。

我在macOS Sierra上安装了MySql 5.7.12

支持文件位于

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

只要将my-default.cnf复制到/etc/my.cnf或/etc/mysql/my.cnf，重新启动时配置就会被拾取。

rDefault选项按照给定的顺序从以下文件中读取: /etc/my.cnf /etc/mysql/my.cnf /usr/local/mysql/etc/my.cnf ~/.my.cnf

macOS sierra 10.12.6 MySQL版本:5.7.18_1 我运行locate my。cnf，路径是

/ usr / local / etc / 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.