运行 MySQL 守护进程时出错

Question

我在运行我的 mysql 守护程序时遇到一个奇怪的错误，因为用户 'mysql' 在这里是命令喷出的内容，现在我已经检查过并且该实例尚未运行：S 所以，我不知道为什么它会显示这个输出：

120729 18:54:28 [Note] Plugin 'FEDERATED' is disabled.
120729 18:54:28 InnoDB: The InnoDB memory heap is disabled
120729 18:54:28 InnoDB: Mutexes and rw_locks use GCC atomic builtins
120729 18:54:28 InnoDB: Compressed tables use zlib 1.2.5
120729 18:54:28 InnoDB: Using Linux native AIO
120729 18:54:28 InnoDB: Initializing buffer pool, size = 128.0M
120729 18:54:28 InnoDB: Completed initialization of buffer pool
120729 18:54:28 InnoDB: highest supported file format is Barracuda.
120729 18:54:28  InnoDB: Waiting for the background threads to start
120729 18:54:29 InnoDB: 1.1.8 started; log sequence number 2929794
120729 18:54:29 [Note] Server hostname (bind-address): '0.0.0.0'; port: 3306
120729 18:54:29 [Note]   - '0.0.0.0' resolves to '0.0.0.0';
120729 18:54:29 [Note] Server socket created on IP: '0.0.0.0'.
120729 18:54:29 [ERROR] Can't start server : Bind on unix socket: No such file or directory
120729 18:54:29 [ERROR] Do you already have another mysqld server running on socket: /var/mysql/mysql.sock ?
120729 18:54:29 [ERROR] Aborting

120729 18:54:29  InnoDB: Starting shutdown...
120729 18:54:30  InnoDB: Shutdown completed; log sequence number 2929794
120729 18:54:30 [Note] mysqld: Shutdown complete

非常感谢任何帮助，谢谢大家！

Answer 1

问题在错误消息中很清楚：

120729 18:54:29 [ERROR] Can't start server : Bind on unix socket: No such file or directory
120729 18:54:29 [ERROR] Do you already have another mysqld server running on socket: /var/mysql/mysql.sock ?

很可能该套接字实际上并不存在。这可能是一个简单的错字。

默认情况下，套接字位于/var/lib/mysql/mysql.sockFedora 机器上。所以，在你的/etc/my.cnf文件中你应该有：

socket=/var/lib/mysql/mysql.sock