二、停止mysql
bin/mysqladmin -u root -p shutdown
注意：可能出现以下错误
错误如下：
Timeout error occurred trying to stop MySQL Daemon.
Stopping mysqld: [FAILED]
Starting mysqld: [ OK ]
解决办法：
[root@AY140624215512103ccdZ local]#
Solution (force kill mysqld - warning you do risk table corruption here but there's no choice if you want your DB up right away)
[root@AY140624215512103ccdZ local]# killall -9 mysqld
[root@AY140624215512103ccdZ local]# service mysqld restart
Stopping mysqld: [ OK ]
Starting mysqld: [ OK ]
三、备份my.cnf
cd /etc
cp my.cnf my.cnf_bak
四、修改my.cnf
[mysqld] 后加入
vi my.cnf
default-storage-engine=InnoDB
五、删除/mysql/data目录下的ib_logfile0，ib_logfile1
否则在启动mysql时会遇到下述错误：
[ERROR] Plugin 'InnoDB' init function returned error.
[ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
[ERROR] Unknown/unsupported table type: InnoDB
[ERROR] Aborting
六、启动mysql
cd /home/administrator/mysql
bin/mysqld_safe -user=root &
七、登录mysql检查修改是否成功
mysql -h ip -u root -p
mysql>show engines;
mysql>show variables like'storage_engine';
+----------------+--------+
| Variable_name | Value |
+----------------+--------+
| storage_engine | InnoDB |
+----------------+--------+