跳到主要內容

Ubuntu上的MySQL出現Can't create/write to file

最近遇到一個問題如下:

/usr/sbin/mysqld: Can't create/write to file '/mysqltmp/ibXc3yTC' (Errcode: 13)
170619  3:32:30  InnoDB: Error: unable to create temporary file; errno: 13
170619  3:32:30 [ERROR] Plugin 'InnoDB' init function returned error.
170619  3:32:30 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
170619  3:32:30 [ERROR] Unknown/unsupported storage engine: InnoDB
170619  3:32:30 [ERROR] Aborting

追蹤流程:
先查 MySQL ErrorCode:13
發現是權限被拒,因此就是資料夾權限問題

這時查看一下權限
drwxrwxrwx   2 root root  4096 Jun 19 03:33 mysqltmp

發現已經是 777 如果不是,就執行以下動作,mysqltmp是資料夾名哦
chown roor.roor mysqltmp
chmod 777 mysqltmp

 再執行一次,仍然不行,因此繼續找其他權限控制的軟體。
發現在 /etc/apparmor.d/usr.sbin.mysqld 有權限限制的設定

因此就在此檔案裡加上
/mysqltmp r,
/mysqltmp/** rw,

接著重新載入設定檔
sudo apparmor_parser -r /etc/apparmor.d/usr.sbin.mysqld

這時再啟動MySQL應該就會成功了 :D

參考資料:

留言

這個網誌中的熱門文章

What is phpize

What is phpize According to the PHP official document : The phpize command is used to prepare the build environment for a PHP extension. If you need to build such an extension that from github or another code repositories, you can use  build tools to perform the build manually. 

判斷是不是json格式 - PHP

<?php /** * Check the string is json * * @param string $str * @return bool * @throws Exception if the string is not json */ function isJson ( $str ) { json_decode ( $str ); $code = json_last_error (); switch ( $code ) { case JSON_ERROR_NONE: return true ; case JSON_ERROR_DEPTH: throw new Exception( "Maximum stack depth exceeded" ); case JSON_ERROR_STATE_MISMATCH: throw new Exception( "Underflow or the modes mismatch" ); case JSON_ERROR_CTRL_CHAR: throw new Exception( "Unexpected control character found" ); case JSON_ERROR_SYNTAX: throw new Exception( "Syntax error, malformed JSON" ); case JSON_ERROR_UTF8: throw new Exception( "Malformed UTF-8 characters, possibly incorrectly encoded" ); default : throw new Exception( "U...

Android開啟Facebook App

如果手機裡已經安裝了Facebook,為什麼還要開啟瀏覽器重新輸入帳密呢? 直接用Facebook操作不是比較方便呢? --以上是前言--XD 所以為了方便已經安裝Facebook使用者,所以App裡開啟粉絲專頁時,應該會有兩種方式 範例如下: ... public static void openFacebookPage (Context context, String id) { Intent intent = null ; try { context. getPackageManager (). getPackageInfo ( "com.facebook.katana" , 0 ); String uri = "fb://page/" + id; intent = new Intent(Intent. ACTION_VIEW , Uri. parse (uri)); } catch (Exception e) { String uri = "https://www.facebook.com/pages/1/" + id; intent = new Intent(Intent. ACTION_VIEW , Uri. parse (uri)); } context. startActivity (intent); } ... 參考資料: android - launch facebook app from other app - Stack Overflow php - Facebook API - How do I get a Facebook user's profile image through the Facebook API (without requiring the user to "Allow" the applicati...