網(wǎng)上有很多關于Mac os 安裝MAMP PRO后出現(xiàn)數(shù)據(jù)庫無法啟動的故障處理辦法，然而每個都試了，完全不能解決問題，錯誤提示是：

InnoDB: The error means the system cannot find the path specified.

InnoDB: If you are installing InnoDB, remember that you must create

InnoDB: directories yourself, InnoDB does not create them.

InnoDB: Error: could not open single-table tablespace file ./mysql/slave_relay_log_info.ibd

InnoDB: We do not continue the crash recovery, because the table may become

InnoDB: corrupt if we cannot apply the log records in the InnoDB log to it.

InnoDB: To fix the problem and start mysqld:

InnoDB: 1) If there is a permission problem in the file and mysqld cannot

InnoDB: open the file, you should modify the permissions.

InnoDB: 2) If the table is not needed, or you can restore it from a backup,

InnoDB: then you can remove the .ibd file, and InnoDB will do a normal

InnoDB: crash recovery and ignore that table.

InnoDB: 3) If the file system or the disk is broken, and you cannot remove

InnoDB: the .ibd file, you can set innodb_force_recovery > 0 in my.cnf

InnoDB: and force InnoDB to continue crash recovery here.

170324 11:18:41 mysqld_safe mysqld from pid file /Applications/MAMP/tmp/mysql/mysql.pid ended

出現(xiàn)這個情況是之前已經(jīng)安裝過MAMP PRO，從倒數(shù)第三行的提示來看需要修改my.cnf，使用mamp打開mysql是可以正常啟動的，但是Hosts無法修改路徑及配置多個測試域名，每次都要去修改一大堆東西，很不方便，下面我們來解決MAMP PRO mysql無法啟動的問題；

其實原因初步判斷應該是在MAMP PRO的應用管理端，從應用程序管理文件夾，找到MAMP PRO，顯示包內(nèi)容，完成訪問路徑/Applications/MAMP PRO/MAMP PRO.app/Contents/Resources/my.cnf，復制你對應版本的my.cnf文件到桌面，修改innodb force recovery=2；將原來的備份，替換對應版本的my.cnf，修改完成回到MAMP PRO控制面板，點擊mysql，成功啟動！

最后來張成功啟動的截圖，有圖有真相！

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