如果这些都失败了，这个能帮我。每次我试图在最后一次安装时杀死进程，它都会重生。

Sudo rm -rf /usr/local/var/mysql

重新安装mysql

Try:

/usr/local/mysql/bin/mysqladmin -u root -p shutdown 

Or:

sudo mysqld stop

Or:

sudo /usr/local/mysql/bin/mysqld stop

Or:

sudo mysql.server stop

如果你在OSX中安装了Launchctl，你可以尝试:

MacPorts

sudo launchctl unload -w /Library/LaunchDaemons/org.macports.mysql.plist
sudo launchctl load -w /Library/LaunchDaemons/org.macports.mysql.plist

注意:重启后会持续。

家酿

launchctl unload -w ~/Library/LaunchAgents/homebrew.mxcl.mysql.plist
launchctl load -w ~/Library/LaunchAgents/homebrew.mxcl.mysql.plist

二进制安装程序

sudo /Library/StartupItems/MySQLCOM/MySQLCOM stop
sudo /Library/StartupItems/MySQLCOM/MySQLCOM start
sudo /Library/StartupItems/MySQLCOM/MySQLCOM restart

我在https://stackoverflow.com/a/102094/58768找到的

/etc/init.d/mysql stop
service mysql stop
killall -KILL mysql mysqld_safe mysqld

When you see the following information, you success

mysql: no process found
mysqld_safe: no process found
mysqld: no process found

我用这个链接解决了在Ubuntu 15.10中安装MySQL 5.6的问题。

在这个安装过程中，我遇到了这样的问题:

"mysqld_safe A mysqld process already exists"

只要完全停止mysqld, mysqld_safe, mysql就解决问题了。

对于二进制安装程序使用这个:

停止:

sudo /Library/StartupItems/MySQLCOM/MySQLCOM stop

开始:

sudo /Library/StartupItems/MySQLCOM/MySQLCOM start

重启:

sudo /Library/StartupItems/MySQLCOM/MySQLCOM restart

mysql 5.7从二进制文件下载到MacOS:

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

For MAMP

停止服务器(但是你可能会注意到MySQL还在) 删除或重命名/Applications/MAMP/tmp/mysql/目录。Pid和mysql.sock.lock文件 当你回到Mamp，你会看到MySQL现在是关闭的。你可以再次启动服务器。