MySQL无法启动的解决办法

MySQL无法启动的解决办法

MySQL无法启动

在停止mysql之后，执行了一些操作（如修改主机名），重新启动 mysql，发现起不来。

[root@www ~]$ service mysql start Starting MySQL..^[[A.................................................................................................. ERROR! The server quit without updating PID file (/disk/mysql/www.pid).[root@www ~]$ service mysql stop  ERROR! MySQL server PID file could not be found![root@www ~]$ service mysql stop  ERROR! MySQL server PID file could not be found![root@www ~]$ service mysql start Starting MySQL..................还是老样子，只好 Ctr+C 掉。[root@www ~]$

120608 09:56:17 mysqld_safe Starting mysqld daemon with databases from /disk/mysql120608 9:56:17 [Note] Plugin 'FEDERATED' is disabled.120608 9:56:17 InnoDB: The InnoDB memory heap is disabled120608 9:56:17 InnoDB: Mutexes and rw_locks use InnoDB's own implementation120608 9:56:17 InnoDB: Compressed tables use zlib 1.2.3120608 9:56:17 InnoDB: Using Linux native AIO120608 9:56:17 InnoDB: Initializing buffer pool, size = 128.0M120608 9:56:17 InnoDB: Completed initialization of buffer poolInnoDB: Unable to lock ./ibdata1, error: 11InnoDB: Check that you do not already have another mysqld processInnoDB: using the same InnoDB data or log files.120608 9:56:17 InnoDB: Retrying to lock the first data fileInnoDB: Unable to lock ./ibdata1, error: 11InnoDB: Check that you do not already have another mysqld processInnoDB: using the same InnoDB data or log files.InnoDB: Unable to lock ./ibdata1, error: 11InnoDB: Check that you do not already have another mysqld processInnoDB: using the same InnoDB data or log files.InnoDB: Unable to lock ./ibdata1, error: 11...

强制终止 mysqld

[root@www ~]$ ps -ef|grep mysql root   4769   1 0 Jun06 ?    00:00:00 /bin/sh /usr/bin/mysqld_safe --datadir=/disk/mysql --pid-file=/disk/mysql/localhost.pidmysql   4874 4769 0 Jun06 ?    00:04:04 /usr/sbin/mysqld --basedir=/usr --datadir=/disk/mysql --plugin-dir=/usr/lib/mysql/plugin --user=mysql --log-error=/disk/mysql/localhost.err --pid-file=/disk/mysql/localhost.pid --socket=/disk/mysql/mysql.sockroot   17947   1 0 09:56 pts/1  00:00:00 /bin/sh /usr/bin/mysqld_safe --datadir=/disk/mysql --pid-file=/disk/mysql/www.pidmysql  18052 17947 0 09:56 pts/1  00:00:00 /usr/sbin/mysqld --basedir=/usr --datadir=/disk/mysql --plugin-dir=/usr/lib/mysql/plugin --user=mysql --log-error=/disk/mysql/www.err --pid-file=/disk/mysql/www.pid --socket=/disk/mysql/mysql.sockroot   18099 17514 0 09:56 pts/1  00:00:00 grep mysql[root@www ~]$ killall mysqld [root@www ~]$ killall mysqld [root@www ~]$ ps -ef|grep mysql root   18116 17514 0 09:57 pts/1  00:00:00 grep mysql[root@www ~]$

[root@www ~]$ service mysql start Starting MySQL. SUCCESS! [root@www ~]$ [root@www ~]$ [root@www ~]$ [root@www ~]$ [root@www ~]$ service mysql start Starting MySQL SUCCESS! [root@www ~]$

[root@www ~]$ perror 11 OS error code 11: Resource temporarily unavailable[root@www ~]$ [root@www ~]$

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