Mac mysql 忘記 root 密碼，phpmyadmin 登錄 No such file or directory 錯誤處理

20190629 mac 上安裝過 mysql 和 phpmyadmin之後，很久沒有使用（本機硬盤空間有限），今天想用的時候，死活輸入不對密碼了！

以前處理過的 mysql 忘記密碼處理，都是在 linux 上的

思路和處理方式是一樣的，但是具體操作起來，mac 上還是不一樣！

1、參考

https://blog.csdn.net/liu_yanzhao/article/details/79427005

開始沒有明白參考博客中 “ 回車後 登錄管理員權限 sudo su ” ，實際照着操作一下就明白了！
開始總以爲和過去的 sudo + 命令 方式一樣的！
以下就是我的錯誤過程

$ sudo ./mysqld_safe --skip-grant-tables &

[1] 2070
dhbm-on-mac20180816:bin dhbm$ sudo ./mysqld_safe --skip-grant-tables &./mysql
[2] 2105
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

[1]+  Stopped                 sudo ./mysqld_safe --skip-grant-tables## 2、

$ sudo ./mysql

Password:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

[4]+  Stopped                 sudo ./mysqld_safe --skip-grant-tables

2、我的過程記錄

請原諒！其實我都是照抄的！

1. 查找我的 mysql 在哪裏
   $ which mysql
   /usr/local/mysql/bin/mysql

2. 進入 su
   $ sudo su
   sh-3.2#

   這是重點！後續實際上和 linux 上一樣了
   後續命令都是在這個 # 方式下

3. 禁止mysql驗證功能
   sh-3.2# ./mysqld_safe --skip-grant-tables &
   返回結果如下：

    [1] 2141
    sh-3.2# 2019-06-29T08:05:37.6NZ mysqld_safe Logging to '/usr/local/mysql-5.7.21-macos10.13-x86_64/data/dhbm-on-mac20180816.local.err'.
    2019-06-29T08:05:38.6NZ mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql-5.7.21-macos10.13-x86_64/data
   

4. sh-3.2# ./mysql
   返回結果如下：

    Welcome to the MySQL monitor.  Commands end with ; or \g.
    Your MySQL connection id is 6
    Server version: 5.7.21 MySQL Community Server (GPL)
    
    Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
    
    Oracle is a registered trademark of Oracle Corporation and/or its
    affiliates. Other names may be trademarks of their respective
    owners.
    
    Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
   

這就進入到 mysql> 命令方式了！

5.mysql> FLUSH PRIVILEGES;
返回結果如下：

Query OK, 0 rows affected (0.00 sec)

6.mysql> SET PASSWORD FOR ‘root’@‘localhost’ = PASSWORD(‘123456’);
返回結果如下：

Query OK, 0 rows affected, 1 warning (0.00 sec)

整個過程如下所示：

3、測試一下

再打開一個 Terminal
$ mysql -u root -p
返回結果如下：

	Enter password: 
	Welcome to the MySQL monitor.  Commands end with ; or \g.
	Your MySQL connection id is 486
	Server version: 5.7.21 MySQL Community Server (GPL)
	
	Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
	
	Oracle is a registered trademark of Oracle Corporation and/or its
	affiliates. Other names may be trademarks of their respective
	owners.
	
	Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
	
	mysql

打開瀏覽器
http://localhost/phpMyAdmin-4.8.0.1-all-languages/index.php
輸入 root /123456 之後
還是錯誤啊！

mysqli_real_connect(): (HY000/2002): No such file or directory

4、 mysqli_real_connect(): (HY000/2002): No such file or directory 錯誤處理

正好我使用了 PHPStorm 打開了這個 phpmyadmin，目錄結構一目瞭然
如下圖所示，直接複製一份 config.sample.php 到 config.inc.php
命令行方式這裏就不再列舉了！不是重點！
No such file or directory 指的是沒有 config.inc.php 這個文件！

修改以下 2 處
//$cfg['Servers'][$i][‘host’] = ‘localhost’;
//by wzh 20190629
$cfg['Servers'][$i][‘host’] = ‘127.0.0.1’;

//$cfg['Servers'][$i][‘password’] = ‘’;
// by wz h20190629 123456
$cfg['Servers'][$i][‘password’] = ‘123456’;

再次測試
http://127.0.0.1/phpMyAdmin-4.8.0.1-all-languages/index.php