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

本文轉載自查看原文 2015-07-30 23:17 8046 ERROR 2002 (HY000): Can't connect to local MyS/ 數據庫技術(My SQL)

從供應商手中接手一個雲平台（Windwos Azure）上的MySQL數據庫，登錄數據庫時遇到錯誤：

$mysql -uroot -p

Enter password:

檢查配置文件/etc/my.cnf發現供應商修改了mysql數據庫的數據存儲目錄，另外mysql.sock文件位置也變更為了/dat/data/mysql/mysql.sock

 
          $ more /etc/my.cnf 
           
          # For advice on how to change settings please see 
           
          # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html 
           
          [mysqld] 
           
          # 
           
          # Remove leading # and set to the amount of RAM for the most important data 
           
          # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. 
           
          # innodb_buffer_pool_size = 128M 
           
          innodb_buffer_pool_size = 2048M 
           
          # 
           
          # Remove leading # to turn on a very important data integrity option: logging 
           
          # changes to the binary log between backups. 
           
          # log_bin 
           
          # 
           
          # Remove leading # to set options mainly useful for reporting servers. 
           
          # The server defaults are faster for transactions and fast SELECTs. 
           
          # Adjust sizes as needed, experiment to find the optimal values. 
           
          # join_buffer_size = 128M 
           
          # sort_buffer_size = 2M 
           
          # read_rnd_buffer_size = 2M 
           
          #datadir=/var/lib/mysql 
           
          #socket=/var/lib/mysql/mysql.sock 
           
          datadir=/dat/data/mysql 
           
          socket=/dat/data/mysql/mysql.sock 
           
          # Disabling symbolic-links is recommended to prevent assorted security risks 
           
          symbolic-links=0 
           
          # Recommended in standard MySQL setup 
           
          sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES  
           
          [mysqld_safe] 
           
          log-error=/var/log/mysqld.log 
           
          pid-file=/var/run/mysqld/mysqld.pid

檢查發現/var/lib/mysql/mysql.sock文件不存在，可以通過建立mysql.sock文件的軟連接。然后登錄數據庫，問題解決。

 
          [root@GETAZLNX005 ~]# ls /var/lib/mysql/mysql.sock 
           
          ls: cannot access /var/lib/mysql.sock: No such file or director 
           
          [root@GETAZLNX005 ~]# ln -s /dat/data/mysql/mysql.sock /var/lib/mysql/mysql.sock

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