cloudera manager运维日志 2018.02.26
登陆上cloudera manager 发现很多报空间不足，手贱就将/tmp目录全部删除了，然后重启server和agent，发现agent可以正常启动，但是server没办法正常启动，查看日志，发现报错
2018-02-23 11:13:05,313 ERRORmain:com.cloudera.enterprise.dbutil.DbUtil: InnoDB engine not found. Showengines reported: [MRG_MYISAM, CSV, MyISAM, MEMORY]
2018-02-23 11:13:05,313 ERRORmain:com.cloudera.server.cmf.bootstrap.EntityManagerFactoryBean: InnoDb engineisn't present or enabled. SCM requires InnoDb MySQL db engine.
日志的意思是找不到mysql的InnoDB这个引擎，于是登录mysql(mysql -u root -p),使用命令 show engines；结果如下：
+------------+---------+-----------------------------------------------------------+--------------+------+------------+
| Engine | Support | Comment | Transactions | XA | Savepoints|
+------------+---------+-----------------------------------------------------------+--------------+------+------------+
| MRG_MYISAM | YES | Collection of identical MyISAMtables | NO | NO | NO |
| CSV | YES | CSV storage engine |NO | NO | NO |
| MyISAM | DEFAULT | Default engine as of MySQL 3.23 with great performance | NO | NO | NO |
| MEMORY | YES | Hash based, stored inmemory, useful for temporary tables | NO | NO | NO |
+------------+---------+-----------------------------------------------------------+--------------+------+------------+
确实没有InnoDB引擎，怀疑是没有正常启动，于是退出mysql，重启mysqld服务(servicemysqld restart),重新进入mysql，发现还是原来的样子
于是
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/lib64/mysql/plugin |
+---------------+-------------------------+
1 row in set (0.01 sec)
如果没有找到，在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
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 inputstatement.
mysql> show engines;
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 inputstatement.
mysql> show engines;
+------------+---------+-----------------------------------------------------------+--------------+------+------------+
|Engine | Support |Comment | Transactions | XA | Savepoints |
+------------+---------+-----------------------------------------------------------+--------------+------+------------+
| MRG_MYISAM |YES | Collection of identical MyISAMtables | NO |NO | NO |
|CSV | YES |CSV storageengine | 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 withgreat performance |NO | NO | NO |
+------------+---------+-----------------------------------------------------------+--------------+------+------------+
4 rows in set (0.00 sec)
mysql> INSTALL PLUGIN InnoDB SONAME 'ha_innodb_plugin.so';
Query OK, 0 rows affected (0.69 sec)
mysql> show engines;
5 rows in set (0.00 sec)
来自 <http://blog.csdn.net/chengxuyuanyonghu/article/details/46834041>
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 storageengine | NO | NO | NO |
| MyISAM | DEFAULT | Default engine as of MySQL 3.23 with great performance | NO | NO | NO |
| MRG_MYISAM | YES | Collection of identical MyISAMtables | NO | NO | NO |
| MEMORY | YES | Hash based, stored inmemory, useful for temporary tables |NO | NO | NO |
+------------+---------+------------------------------------------------------------+--------------+------+------------+
5 rows in set (0.00 sec)