InnoDB: Check that you do not already have another mysqld process 错误解决办法

心已赠人 2022-08-02 13:39 156阅读 0赞

非正常关机之后 再次启动mysql 失败

错误信息如下：

150721 15:45:27 mysqld\_safe Starting mysqld daemon with databases from /opt/mysql/data  
150721 15:45:27 \[Note\] Flashcache bypass: disabled  
150721 15:45:27 \[Note\] Flashcache setup error is : ioctl failed

150721 15:45:27 \[Note\] Plugin 'FEDERATED' is disabled.  
150721 15:45:27 \[Warning\] option 'innodb-additional-mem-pool-size': signed value 200 adjusted to 524288  
150721 15:45:27 InnoDB: The InnoDB memory heap is disabled  
150721 15:45:27 InnoDB: Mutexes and rw\_locks use GCC atomic builtins  
150721 15:45:27 InnoDB: Compressed tables use zlib 1.2.3  
150721 15:45:27 InnoDB: Using Linux native AIO  
150721 15:45:27 InnoDB: Initializing buffer pool, size = 1.0G  
150721 15:45:28 InnoDB: Completed initialization of buffer pool  
InnoDB: Unable to lock ./ibdata1, error: 11  
InnoDB: Check that you do not already have another mysqld process  
InnoDB: using the same InnoDB data or log files.  
150721 15:45:28  InnoDB: Retrying to lock the first data file  
InnoDB: Unable to lock ./ibdata1, error: 11  
InnoDB: Check that you do not already have another mysqld process  
InnoDB: using the same InnoDB data or log files.  
InnoDB: Unable to lock ./ibdata1, error: 11  
InnoDB: Check that you do not already have another mysqld process  
InnoDB: using the same InnoDB data or log files.  
InnoDB: Unable to lock ./ibdata1, error: 11  
InnoDB: Check that you do not already have another mysqld process  
InnoDB: using the same InnoDB data or log files.  
InnoDB: Unable to lock ./ibdata1, error: 11

解决办法：

\[root@192-168-102-57 log\]\# ps -ef|grep mysql  
root     11979     1  0 Jul16 ?        00:00:00 /bin/sh /opt/mysql/bin/mysqld\_safe --datadir=/opt/mysql/data --pid-file=/opt/mysql/data/192\_168\_102\_47.sky-mobi.com.hz.bj.pid  
mysql    12749 11979  0 Jul16 ?        00:03:19 /opt/mysql/bin/mysqld --basedir=/opt/mysql --datadir=/opt/mysql/data --plugin-dir=/opt/mysql/lib/mysql/plugin --user=mysql --log-error=/opt/mysql/log/alert.log --open-files-limit=65535 --pid-file=/opt/mysql/data/192\_168\_102\_47.sky-mobi.com.hz.bj.pid --socket=/opt/mysql/run/mysql.sock --port=3306  
root     29336 29085  0 15:48 pts/1    00:00:00 grep mysql

可以看到有其它进程占用了 mysql的data文件夹

kill 掉这些进程之后 再次启动 mysql 正常启动

总结: 再启动mysql之前 先查看一下是否有其它的进程 占用mysql的数据文件

如果有则杀掉占用的进程 再启动mysql