mysql启动的报错
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由于项目需要不得不折腾mysql,redhat上安装了最新的mysql 5.6启动报错如下：
[root@tserver mysql]# /etc/init.d/mysql start
Starting MySQL.The server quit without updating PID file (/var/lib/mysql/tserver.pid).[FAILED]
检查报错信息tserver.err。
cat tserver.err
140121 06:03:29 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
2014-01-21 06:03:29 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2014-01-21 06:03:29 14964 [Note] Plugin 'FEDERATED' is disabled.
2014-01-21 06:03:29 14964 [Note] InnoDB: The InnoDB memory heap is disabled
2014-01-21 06:03:29 14964 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2014-01-21 06:03:29 14964 [Note] InnoDB: Compressed tables use zlib 1.2.3
2014-01-21 06:03:29 14964 [Note] InnoDB: Using Linux native AIO
2014-01-21 06:03:29 14964 [Note] InnoDB: Using CPU crc32 instructions
2014-01-21 06:03:29 14964 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2014-01-21 06:03:29 14964 [Note] InnoDB: Completed initialization of buffer pool
2014-01-21 06:03:29 14964 [ERROR] InnoDB: auto-extending data file ./ibdata1 is of a different size 640 pages (rounded down to MB) than specified in the .cnf file: initial 768 pages, max 0 (relevant if non-zero) pages!
2014-01-21 06:03:29 14964 [ERROR] InnoDB: Could not open or create the system tablespace. If you tried to add new data files to the system tablespace, and it failed here, you should now edit innodb_data_file_path in my.cnf back to what it was, and remove the
new ibdata files InnoDB created in this failed attempt. InnoDB only wrote those files full of zeros, but did not yet use them in any way. But be careful: do not remove old data files which contain your precious data!
2014-01-21 06:03:29 14964 [ERROR] Plugin 'InnoDB' init function returned error.
2014-01-21 06:03:29 14964 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
2014-01-21 06:03:29 14964 [ERROR] Unknown/unsupported storage engine: InnoDB
2014-01-21 06:03:29 14964 [ERROR] Aborting
2014-01-21 06:03:29 14964 [Note] Binlog end
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'partition'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_TABLES'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_FT_CONFIG'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_FT_DELETED'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_METRICS'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_CMPMEM'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_CMP_RESET'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_CMP'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_LOCKS'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_TRX'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'BLACKHOLE'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'ARCHIVE'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'CSV'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'MEMORY'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'MRG_MYISAM'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'MyISAM'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'sha256_password'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'mysql_old_password'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'mysql_native_password'
2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'binlog'
2014-01-21 06:03:29 14964 [Note] /usr/sbin/mysqld: Shutdown complete
检查发现mysql的目录下有如下文件：
[root@tserver mysql]# ls
ibdata1 ib_logfile0 ib_logfile1 mysql RPM_UPGRADE_HISTORY RPM_UPGRADE_MARKER-LAST test tserver.err
删除了如下三个文件：
[root@tserver mysql]# rm ibdata1 ib_logfile0 ib_logfile1
rm: remove regular file `ibdata1'? yes
rm: remove regular file `ib_logfile0'? yes
rm: remove regular file `ib_logfile1'? yes
重新启动mysql server就可以了：
[root@tserver mysql]# /etc/init.d/mysql start
Starting MySQL.[ OK ]
[root@tserver mysql]# ps -ef|grep mysql
root 15166 1 0 06:12 pts/0 00:00:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/tserver.pid
mysql 15257 15166 9 06:12 pts/0 00:00:00 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/lib/mysql/tserver.err --pid-file=/var/lib/mysql/tserver.pid
root 15284 14224 0 06:12 pts/0 00:00:00 grep mysql
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