安装TokuDB引擎

前言：TokuDB 是一个高性能、支持事务处理的 MySQL 和 MariaDB 的存储引擎。TokuDB 的主要特点是高压缩比，高 INSERT 性能，支持大多数在线修改索引、添加字段,非常适合日志型应用场景（只有insert，select，少update），下面就来看一下安装步骤

1.解压缩包
   tar xvf Percona-Server-5.6.24-rel72.2-TokuDB.Linux.x86_64.ssl098e.tar.gz
   cd Percona-Server-5.6.24-rel72.2-Linux.x86_64.ssl098e
   cp -rpf * /opt/app/mysql/
2. 启动之前，停用transparent huge pages  如果不关闭可能会导致TokuDB内存泄露（建议写到 /etc/rc.local 中，重启仍然生效）：
   echo never > /sys/kernel/mm/transparent_hugepage/enabled
   echo never > /sys/kernel/mm/transparent_hugepage/defrag
   echo never > /sys/kernel/mm/redhat_transparent_hugepage/enabled
   echo never > /sys/kernel/mm/redhat_transparent_hugepage/defrag
3.启动MySQL
/etc/init.d/mysql restart
4.安装插件
INSTALL PLUGIN tokudb SONAME ’ha_tokudb.so’;
INSTALL PLUGIN tokudb_file_map SONAME ’ha_tokudb.so’;
INSTALL PLUGIN tokudb_fractal_tree_info SONAME ’ha_tokudb.so’;
INSTALL PLUGIN tokudb_fractal_tree_block_map SONAME ’ha_tokudb.so’;
INSTALL PLUGIN tokudb_trx SONAME ’ha_tokudb.so’;
INSTALL PLUGIN tokudb_locks SONAME ’ha_tokudb.so’;
INSTALL PLUGIN tokudb_lock_waits SONAME ’ha_tokudb.so’;
5.查看安装结果
(twDB)root@localhost [(none)]> 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     |
| sha256_password               | ACTIVE   | AUTHENTICATION     | NULL         | GPL     |
| MEMORY                        | ACTIVE   | STORAGE ENGINE     | NULL         | GPL     |
| MyISAM                        | ACTIVE   | STORAGE ENGINE     | NULL         | GPL     |
| MRG_MYISAM                    | ACTIVE   | STORAGE ENGINE     | NULL         | GPL     |
| CSV                           | ACTIVE   | STORAGE ENGINE     | NULL         | GPL     |
| PERFORMANCE_SCHEMA            | ACTIVE   | STORAGE ENGINE     | NULL         | GPL     |
| InnoDB                        | ACTIVE   | STORAGE ENGINE     | NULL         | GPL     |
| XTRADB_READ_VIEW              | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| XTRADB_INTERNAL_HASH_TABLES   | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| XTRADB_RSEG                   | ACTIVE   | INFORMATION SCHEMA | 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     |
| INNODB_CMP_PER_INDEX          | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_CMP_PER_INDEX_RESET    | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_BUFFER_PAGE            | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_BUFFER_PAGE_LRU        | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_BUFFER_POOL_STATS      | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_METRICS                | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_FT_DEFAULT_STOPWORD    | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_FT_DELETED             | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_FT_BEING_DELETED       | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_FT_CONFIG              | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_FT_INDEX_CACHE         | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_FT_INDEX_TABLE         | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_SYS_TABLES             | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_SYS_TABLESTATS         | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_SYS_INDEXES            | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_SYS_COLUMNS            | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_SYS_FIELDS             | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_SYS_FOREIGN            | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_SYS_FOREIGN_COLS       | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_SYS_TABLESPACES        | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_SYS_DATAFILES          | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| INNODB_CHANGED_PAGES          | ACTIVE   | INFORMATION SCHEMA | NULL         | GPL     |
| BLACKHOLE                     | ACTIVE   | STORAGE ENGINE     | NULL         | GPL     |
| FEDERATED                     | DISABLED | STORAGE ENGINE     | NULL         | GPL     |
| ARCHIVE                       | ACTIVE   | STORAGE ENGINE     | NULL         | GPL     |
| partition                     | ACTIVE   | STORAGE ENGINE     | NULL         | GPL     |
| TokuDB_file_map               | ACTIVE   | INFORMATION SCHEMA | ha_tokudb.so | GPL     |
| TokuDB_fractal_tree_info      | ACTIVE   | INFORMATION SCHEMA | ha_tokudb.so | GPL     |
| TokuDB_fractal_tree_block_map | ACTIVE   | INFORMATION SCHEMA | ha_tokudb.so | GPL     |
| TokuDB_trx                    | ACTIVE   | INFORMATION SCHEMA | ha_tokudb.so | GPL     |
| TokuDB_locks                  | ACTIVE   | INFORMATION SCHEMA | ha_tokudb.so | GPL     |
| TokuDB_lock_waits             | ACTIVE   | INFORMATION SCHEMA | ha_tokudb.so | GPL     |
| TokuDB                        | ACTIVE   | STORAGE ENGINE     | ha_tokudb.so | GPL     |
+-------------------------------+----------+--------------------+--------------+---------+
53 rows in set (0.00 sec)

添加配置文件

[mysqld_safe]

malloc-lib= /opt/app/mysql/lib/mysql/libjemalloc.so

plugin-dir = /opt/app/mysql/lib/mysql/plugin/

plugin-load=ha_tokudb.so

[mysqld]

#tokudb

#把TokuDB datadir以及logdir和MySQL的datadir分开，也可以不分开，

tokudb-data-dir = /data/mysql/tokudbData

tokudb-log-dir = /data/mysql/tokudbLog

#TokuDB的行模式，建议用 FAST ，如果磁盘空间很紧张，建议用 SMALL

#tokudb_row_format = tokudb_small

tokudb_row_format = tokudb_fast

tokudb_cache_size = xxG ###建议内存的一半

tokudb_commit_sync = 0

tokudb_directio = 1

tokudb_read_block_size = 128K

tokudb_read_buf_size = 128K

questions
###############################
(twDB)root@localhost [sysbench]> INSTALL PLUGIN tokudb SONAME 'ha_tokudb.so';
ERROR 1123 (HY000): Can't initialize function 'tokudb'; Plugin initialization function failed.
(twDB)root@localhost [sysbench]> INSTALL PLUGIN ha_tokudb SONAME 'ha_tokudb.so';
ERROR 1127 (HY000): Can't find symbol 'ha_tokudb' in library
(twDB)root@localhost [sysbench]> INSTALL PLUGIN tokudb SONAME 'ha_tokudb.so';
ERROR 1123 (HY000): Can't initialize function 'tokudb'; Plugin initialization function failed.
(twDB)root@localhost [sysbench]>

出现这个是因为偷懒，只拷贝了Percona-Server-5.6.24-rel72.2-Linux.x86_64.ssl098e/bin lib目录到MySQL目录，解决方法就是拷贝全部文件过去,重新启动MySQL实例，再次安装就行