启动mysql 失败，“Warning:The /usr/local/mysql/data directory is not owned by the 'mysql' or '_mysql' ”

一、Mac OS X的升级或其他原因可能会导致ＭySQL启动或开机自动运行时 在ＭySQL操作面板上会提示“Warning:The /usr/local/mysql/data director ...