这几天学习了一下mysql安装innodb插件，以用 show engines;或者show plugins;
来查看mysql> show plugins;
+------------+--------+----------------+---------+---------+
| Name | Status | Type | Library | License |
+------------+--------+----------------+---------+---------+
| binlog | ACTIVE | STORAGE ENGINE | NULL | GPL |
| CSV | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MEMORY | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MRG_MYISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MyISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
+------------+--------+----------------+---------+---------+
5 rows in set (0.00 sec)
方法一：
在configure的时候加上–with-plugins=innobase (或all) 如果要添多个插件，用半角逗号隔开
方法二：
如果mysql已经编译好了，又不想重新编译，可以安装插件，innodb就是一个插件，安装好mysql后也是可以添加的。
1，查看一下，mysql配置是不是支持动态添加插件
mysql> show variables like "have_%";
+----------------------+-------+
| Variable_name | Value |
+----------------------+-------+
| have_compress | YES |
| have_crypt | YES |
| have_csv | YES |
| have_dynamic_loading | YES | //在这里是YES表示是支持的
如果是no呢，就不太好办，因为have_dynamic_loading是只读变量，
mysql> set have_dynamic_loading=1;
ERROR 1238 (HY000): Variable ‘have_dynamic_loading’ is a read only variable
不过一般情况下都是YES，
2，添加插件
mysql> INSTALL PLUGIN INNODB SONAME 'ha_innodb.so'; //提示打不开文件，没有权限
ERROR 1126 (HY000): Can't open shared library '/usr/local/mysql/lib/mysql/plugin/ha_innodb.so' (errno: 13 cannot restore segment prot after reloc: Permission denied)
上面报没有权限错误，搞得我很郁闷，解决办法如下：
root@ubuntu:/usr/local/mysql# find . -type d -print |grep -i plugin //查看一下插件目录对不对
./lib/mysql/plugin
root@ubuntu:/usr/local/mysql# chcon -t texrel_shlib_t /usr/local/mysql/lib/mysql/plugin/ha_innodb.so
chcon: 部分关联无法应用于文件“/usr/local/mysql/lib/mysql/plugin/ha_innodb.so”
用chcon也报错，我查一下是因为我没有安装selinux
root@ubuntu:/usr/local/mysql# whereis selinux
selinux:
selinux我根本没有安装，如果个人用，这个也不需要，没办法装一下，装完后chcon就不报错了。
安装以下几个
mysql> install plugin INNODB soname "ha_innodb.so";
mysql> install plugin INNODB_TRX soname "ha_innodb.so";
mysql> install plugin INNODB_LOCKS soname "ha_innodb.so";
mysql> install plugin INNODB_LOCK_WAITS soname "ha_innodb.so";
mysql> install plugin INNODB_CMP soname "ha_innodb.so";
mysql> install plugin INNODB_CMP_RESET soname "ha_innodb.so";
mysql> install plugin INNODB_CMPMEM soname "ha_innodb.so";
mysql> install plugin INNODB_CMPMEM_RESET soname "ha_innodb.so"
安装好后，在用 show engines;或者show plugins;来查看
mysql> show plugins;
+---------------------+--------+--------------------+---------+---------+
| Name | Status | Type | Library | License |
+---------------------+--------+--------------------+---------+---------+
| binlog | ACTIVE | STORAGE ENGINE | NULL | GPL |
| CSV | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MEMORY | ACTIVE | STORAGE ENGINE | NULL | GPL |
| InnoDB | ACTIVE | STORAGE ENGINE | NULL | GPL |
| INNODB_TRX | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_LOCKS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_LOCK_WAITS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMPMEM | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMPMEM_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| MRG_MYISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MyISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
+---------------------+--------+--------------------+---------+---------+
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2014-11-28 14:37:54 |
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