Linux下MySQL啟動失敗的解決一例:

當敲mysql命令時

Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'

當敲service mysqld start命令時，或者/etc/init.d/mysqld start

Timeout error occurred trying to start MySQL Daemon.

查看log日志命令less /var/log/mysqld.log

看看你是什么錯誤，我的是：

071119 23:09:04 mysqld started

InnoDB: The first specified data file ./ibdata1 did not exist:

InnoDB: a new database to be created!

071119 23:09:05 InnoDB: Setting file ./ibdata1 size to 10 MB

InnoDB: Database physically writes the file full: wait...

071119 23:09:05 InnoDB: Log file ./ib_logfile0 did not exist: new to be created

InnoDB: Setting log file ./ib_logfile0 size to 5 MB

InnoDB: Database physically writes the file full: wait...

071119 23:09:05 InnoDB: Log file ./ib_logfile1 did not exist: new to be created

InnoDB: Setting log file ./ib_logfile1 size to 5 MB

InnoDB: Database physically writes the file full: wait...

InnoDB: Doublewrite buffer not found: creating new

InnoDB: Doublewrite buffer created

InnoDB: Creating foreign key constraint system tables

InnoDB: Foreign key constraint system tables created

071119 23:09:06 InnoDB: Started; log sequence number 0 0

071119 23:09:06 [Note] /usr/libexec/mysqld: ready for connections.

Version: '5.0.22' socket: '/var/lib/mysql/mysql.sock' port: 3306 Source distribution

InnoDB: Error: trying to create a MySQL system table mysql/user of type InnoDB.

InnoDB: MySQL system tables must be of the MyISAM type!

071129 17:08:42 [Note] /usr/libexec/mysqld: Normal shutdown

071129 17:08:42 InnoDB: Starting shutdown...

071129 17:08:46 InnoDB: Shutdown completed; log sequence number 0 2566023

071129 17:08:46 [Note] /usr/libexec/mysqld: Shutdown complete

071129 17:08:46 mysqld ended

071201 12:09:10 mysqld started

071201 12:09:11 InnoDB: Started; log sequence number 0 2566023

071201 12:09:11 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist

071201 12:09:11 mysqld ended

071201 12:10:49 mysqld started

071201 12:10:49 InnoDB: Started; log sequence number 0 2566023

071201 12:10:49 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist

071201 12:10:49 mysqld ended

071201 12:12:34 mysqld started

071201 12:12:34 InnoDB: Started; log sequence number 0 2566023

071201 12:12:34 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist

071201 12:12:34 mysqld ended

071201 12:14:51 mysqld started

071201 12:14:51 InnoDB: Started; log sequence number 0 2566023

071201 12:14:51 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist

071201 12:14:51 mysqld ended

總結

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