首先确定，在mysql的'plugin_dir'下有ha_innodb_plugin.so和ha_innodb.so两个文件
查询'plugin_dir'的路径可以用以下命令
mysql> show variables like 'plugin_dir';
+---------------+-----------------------------------+
| Variable_name | Value |
+---------------+-----------------------------------+
| plugin_dir | /usr/local/mysql/lib/mysql/plugin |
+---------------+-----------------------------------+
1 row in set (0.01 sec)
如果没有找到，在您的mysql编译目录里有下面的目录文件(内置的innodb和innodb_plugin)
storage/innobase/.libs/ha_innodb.so
storage/innodb_plugin/.libs/ha_innodb_plugin.so
您需要把它们(ha_innodb_plugin.so和ha_innodb.so)拷贝到mysql的plugin目录中
(/usr/local/mysql/lib/mysql/plugin)
接下来就是在mysql命令行安装一下
# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 18
Server version: 5.1.36-log Source distribution
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show engines;
+------------+---------+-----------------------------------------------------------+--------------+------+------------+
| Engine | Support | Comment | Transactions | XA | Savepoints |
+------------+---------+-----------------------------------------------------------+--------------+------+------------+
| MRG_MYISAM | YES | Collection of identical MyISAM tables | NO | NO | NO |
| CSV | YES | CSV storage engine | NO | NO | NO |
| MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO | NO |
| MyISAM | DEFAULT | Default engine as of MySQL 3.23 with great performance | NO | NO | NO |
+------------+---------+-----------------------------------------------------------+--------------+------+------------+
4 rows in set (0.00 sec)
mysql> INSTALL PLUGIN InnoDB SONAME 'ha_innodb.so';
Query OK, 0 rows affected (0.69 sec)
mysql> show engines;
+------------+---------+------------------------------------------------------------+--------------+------+------------+
| Engine | Support | Comment | Transactions | XA | Savepoints |
+------------+---------+------------------------------------------------------------+--------------+------+------------+
| InnoDB | YES | Supports transactions, row-level locking, and foreign keys | YES | YES | YES |
| CSV | YES | CSV storage engine | NO | NO | NO |
| MRG_MYISAM | YES | Collection of identical MyISAM tables | NO | NO | NO |
| MyISAM | DEFAULT | Default engine as of MySQL 3.23 with great performance | NO | NO | NO |
| MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO | NO |
+------------+---------+------------------------------------------------------------+--------------+------+------------+
5 rows in set (0.00 sec)
今天在一台服务器上安装最新的Mysql 5.1.35，通过源代码安装。
编译安装都很顺利，到执行
bin/mysql_install_db –user=mysql
就报了usr/local/mysql/libexec/mysqld: unknown variable ‘innodb_data_home_dir=/usr/local/mysql/var/‘错误。 之前从来没有过，百思不得其解，Google了一下，发现原来是最新的MySQL默认不带innodb引擎。 于是重新编译，在configrue的时候，加上–with-plugins=innobase这个参数
之后可以进入数据库，执行
mysql>show plugin;
+————+——–+—————-+————–+———+| Name | Status | Type | Library | License |+————+——–+—————-+————–+———+| binlog | ACTIVE | STORAGE ENGINE | NULL | GPL || CSV | ACTIVE | STORAGE ENGINE | NULL | GPL || MEMORY | ACTIVE | STORAGE ENGINE | NULL | GPL || MyISAM | ACTIVE | STORAGE ENGINE | NULL | GPL || MRG_MYISAM | ACTIVE | STORAGE ENGINE | NULL | GPL || SPHINX | ACTIVE | STORAGE ENGINE | NULL | GPL || PBXT | ACTIVE | STORAGE ENGINE | libpbxt.so | GPL || InnoDB | ACTIVE | STORAGE ENGINE | ha_innodb.so | GPL |+————+——–+—————-+————–+———+
如果还没有，就执行一下
mysql>install plugin innodb soname ‘ha_innodb.so’;