1. 启动

launchctl load ~/Library/LaunchAgents/homebrew.mxcl.mariadb.plist

2. 关闭

launchctl unload ~/Library/LaunchAgents/homebrew.mxcl.mariadb.plist

经过试验，发现只有unload方法可以停止服务，其他如：mysqladmin shutdown、support-files/mysql.server stop均告失败。