MySQL不支持InnoDB存儲引擎

工做中，難免會遇到前輩已經編譯安裝過的mysql，突然發現mysql不支持innodb的存儲引擎的問題，如今來看一下吧

1、先看mysql是否支持innodb存儲引擎

mysql> show variables like 'ha%';
+----------------------+----------+
| Variable_name        | Value    |
+----------------------+----------+
| have_compress        | YES      |
| have_crypt          | YES      |
| have_csv            | YES      |
| have_dynamic_loading | YES      |
| have_geometry        | YES      |
| have_innodb          | DISABLED |
| have_ndbcluster      | NO      |
| have_openssl        | DISABLED |
| have_partitioning    | YES      |
| have_profiling      | YES      |
| have_query_cache    | YES      |
| have_rtree_keys      | YES      |
| have_ssl            | DISABLED |
| have_symlink        | YES      |
+----------------------+----------+
14 rows in set (0.00 sec)
have_innodb：值爲DISABLED，表示未啓用，值爲no，表示不支持innodb存儲引擎

mysql> show plugins;
+-----------------------+----------+----------------+---------+---------+
| Name                  | Status  | Type          | Library | License |
+-----------------------+----------+----------------+---------+---------+
| binlog                | ACTIVE  | STORAGE ENGINE | NULL    | GPL    |
| mysql_native_password | ACTIVE  | AUTHENTICATION | NULL    | GPL    |
| mysql_old_password    | ACTIVE  | AUTHENTICATION | NULL    | GPL    |
| MEMORY                | ACTIVE  | STORAGE ENGINE | NULL    | GPL    |
| MRG_MYISAM            | ACTIVE  | STORAGE ENGINE | NULL    | GPL    |
| CSV                  | ACTIVE  | STORAGE ENGINE | NULL    | GPL    |
| MyISAM                | ACTIVE  | STORAGE ENGINE | NULL    | GPL    |
| BLACKHOLE            | ACTIVE  | STORAGE ENGINE | NULL    | GPL    |
| FEDERATED            | DISABLED | STORAGE ENGINE | NULL    | GPL    |
| PERFORMANCE_SCHEMA    | ACTIVE  | STORAGE ENGINE | NULL    | GPL    |
| ARCHIVE              | ACTIVE  | STORAGE ENGINE | NULL    | GPL    |
| partition            | ACTIVE  | STORAGE ENGINE | NULL    | GPL    |
+-----------------------+----------+----------------+---------+---------+
  如今的mysql的確不支持innodb存儲引擎

2.查看是否支持動態加載插件
mysql> show variables like 'have_dynamic%';
+----------------------+-------+
| Variable_name        | Value |
+----------------------+-------+
| have_dynamic_loading | YES  |
+----------------------+-------+
1 row in set (0.00 sec)
have_dynamic_loading：值爲yes，表示動態加載mysql的插件
            當使用源碼編譯安裝時不能使用-with-mysqld-ldflags=all-static選項  
3.放入插件文件，找到mysql存放插件的路徑
mysql> show variables like 'plugin_dir';
+---------------+------------------------------+
| Variable_name | Value                        |
+---------------+------------------------------+
| plugin_dir    | /usr/local/mysql/lib/plugin/ |
+---------------+------------------------------+
#在該目錄中查看是否已有ha_innodb.so和ha_innodb_plugin.so兩個文件
[root@zhu2 mysql-5.1.39]# ll /usr/local/mysql/lib/plugin/ha_innodb.so
lrwxrwxrwx 1 mysql mysql 18 08-22 02:55 /opt/mysql/lib/mysql/plugin/ha_innodb.so -> ha_innodb.so.0.0.0
[root@zhu2 mysql-5.1.39]# ll /usr/local/mysql/lib/plugin/ha_innodb_plugin.so
lrwxrwxrwx 1 mysql mysql 25 08-22 02:55 /opt/mysql/lib/mysql/plugin/ha_innodb_plugin.so -> ha_innodb_plugin.so.0.0.0
#若沒有能夠去網上下載與所安裝mysql對應的版本，或者直接去mysql源碼包中storage/innobase/.libs/ha_innodb.so
storage/innodb_plugin/.libs/ha_innodb_plugin.so 複製到mysql的plugin目錄中
4.添加動態安裝加載
mysql>  INSTALL PLUGIN InnoDB SONAME 'ha_innodb.so';
Query OK, 0 rows affected (0.61 sec)
5.看如今是否支持innodb

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    |
| MyISAM    | ACTIVE | STORAGE ENGINE | NULL        | GPL    |
| MRG_MYISAM | ACTIVE | STORAGE ENGINE | NULL        | GPL    |
| InnoDB    | ACTIVE | STORAGE ENGINE | ha_innodb.so | GPL    |
+------------+--------+----------------+--------------+---------+
6 rows inset(0.01 sec)
mysql> show engines;
+------------+---------+------------------------------------------------------------+--------------+------+------------+
| Engine    | Support | Comment                                                    | Transactions | XA  | Savepoints |
+------------+---------+------------------------------------------------------------+--------------+------+------------+
| CSV        | YES    | CSV storage engine                                        | NO          | NO  | NO        |
| InnoDB    | YES    | Supports transactions, row-level locking, and foreign keys | YES          | YES  | YES        |
| MEMORY    | YES    | Hash based, stored inmemory, useful fortemporary tables  | NO          | NO  | NO        |
| MyISAM    | DEFAULT | Default engine as of MySQL 3.23 with great performance    | NO          | NO  | NO        |
| MRG_MYISAM | YES    | Collection of identical MyISAM tables                      | NO          | NO  | NO        |
+------------+---------+------------------------------------------------------------+--------------+------+------------+
5 rows inset(0.01 sec)
2、追加編譯

  1.刪除innodb支持，應查看

mysql> UNINSTALL PLUGIN innodb;
Query OK, 0 rows affected (0.52 sec)
mysql> show engines;
+------------+---------+-----------------------------------------------------------+--------------+------+------------+
| Engine    | Support | Comment                                                  | Transactions | XA  | Savepoints |
+------------+---------+-----------------------------------------------------------+--------------+------+------------+
| CSV        | YES    | CSV storage engine                                        | NO          | NO  | NO        |
| MRG_MYISAM | YES    | Collection of identical MyISAM tables                    | NO          | NO  | NO        |
| MEMORY    | YES    | Hash based, stored inmemory, useful fortemporary tables | NO          | NO  | NO        |
| MyISAM    | DEFAULT | Default engine as of MySQL 3.23 with great performance    | NO          | NO  | NO        |
+------------+---------+-----------------------------------------------------------+--------------+------+------------+
4 rows inset(0.00 sec)

2.從新編譯

注：注意mysql的編譯安裝方式，
2.看mysql不支持或者未啓用innodb存儲引擎

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