0034-CM启动报InnoDB engine not found分析

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1.问题描述

cloudera-scm-server服务启动失败，日志报错如下：

2017-09-10 10:23:47,267 ERROR main:com.cloudera.enterprise.dbutil.DbUtil: InnoDB engine not found. Show engines reported: [MRG_MYISAM, CSV, MyISAM, MEMORY] 2017-09-10 10:23:47,268 ERROR main:com.cloudera.server.cmf.bootstrap.EntityManagerFactoryBean: InnoDb engine isn't present or enabled. SCM requires InnoDb MySQL db engine.

2.问题复现

测试环为CDH5.12.1，以下为复现步骤。

[root@ip-172-31-6-148 /]# chmod 755 tmp/ [root@ip-172-31-6-148 /]# ll total 116 drwxr-xr-x. 231 root root 20480 Sep 10 15:48 tmp [root@ip-172-31-6-148 /]#

2.重启mysql服务

[root@ip-172-31-6-148 /]# service mysqld restart Stopping mysqld:                                           [  OK  ] Starting mysqld:                                           [  OK  ] [root@ip-172-31-6-148 /]#

3.启动cloudera-scm-server服务

[root@ip-172-31-6-148 /]# service cloudera-scm-server restart Stopping cloudera-scm-server:                               [  OK  ] Starting cloudera-scm-server:                               [  OK  ] [root@ip-172-31-6-148 /]#

4.查看启动日志报错如问题描述一致

3.解决方法

将/tmp目录权限修改为777，重启mysql和cloudera-scm-server服务

[root@ip-172-31-6-148 /]# chmod 777 tmp/ [root@ip-172-31-6-148 /]# ll total 116 drwxrwxrwx. 231 root root 20480 Sep 10 15:48 tmp [root@ip-172-31-6-148 /]#

2.重启msyql服务

[root@ip-172-31-6-148 /]# service mysqld restart Stopping mysqld:                                           [  OK  ] Starting mysqld:                                           [  OK  ] [root@ip-172-31-6-148 /]#

3.重启cloudera-scm-server服务

[root@ip-172-31-6-148 /]# service cloudera-scm-server restart Stopping cloudera-scm-server:                               [  OK  ] Starting cloudera-scm-server:                               [  OK  ] [root@ip-172-31-6-148 /]#

CM正常启动，问题解决。

4.备注

出现InnoDBengines not found

登录mysql通过show engines命令查看mysql引擎

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         | | MyISAM     | DEFAULT | Default engine as of MySQL 3.23 with great performance     | NO           | NO   | NO         | | InnoDB     | YES     | Supports transactions, row-level locking, and foreign keys | YES          | YES  | YES        | | MEMORY     | YES     | Hash based, stored in memory, useful for temporary tables  | NO           | NO   | NO         | +------------+---------+------------------------------------------------------------+--------------+------+------------+ 5 rows in set (0.00 sec)  mysql>

注意：如果没有显示InnoDB Engine可能是/tmp目录权限不足导致，也可能是源码编译的时候未编译InnoDB引擎；

可以通过showplugins命令查看mysql支持的插件

mysql> show plugins; +------------+--------+----------------+---------+---------+ | Name       | Status | Type           | Library | License | +------------+--------+----------------+---------+---------+ | binlog     | ACTIVE | STORAGE ENGINE | NULL    | GPL     | | partition  | ACTIVE | STORAGE ENGINE | NULL    | GPL     | | CSV        | ACTIVE | STORAGE ENGINE | NULL    | GPL     | | MEMORY     | ACTIVE | STORAGE ENGINE | NULL    | GPL     | | InnoDB     | ACTIVE | STORAGE ENGINE | NULL    | GPL     | | MyISAM     | ACTIVE | STORAGE ENGINE | NULL    | GPL     | | MRG_MYISAM | ACTIVE | STORAGE ENGINE | NULL    | GPL     | +------------+--------+----------------+---------+---------+ 7 rows in set (0.00 sec) mysql>

如果没有InnoDB则可以通过INSTALL命令安装

使用INSTALL命令安装InnoDB

查看mysql插件安装目录

mysql> show variables like 'plugin_dir';  +---------------+-------------------------+ | Variable_name | Value                   | +---------------+-------------------------+ | plugin_dir    | /usr/lib64/mysql/plugin | +---------------+-------------------------+ 1 row in set (0.00 sec)

查看linux目录下是否有ha_innodb*.so的文件

[root@ip-172-31-6-148 ~]# cd /usr/lib64/mysql/plugin  [root@ip-172-31-6-148 plugin]# ll total 1416 lrwxrwxrwx 1 root root      25 Sep 10 15:47 ha_innodb_plugin.so -> ha_innodb_plugin.so.0.0.0 lrwxrwxrwx 1 root root      25 Sep 10 15:47 ha_innodb_plugin.so.0 -> ha_innodb_plugin.so.0.0.0 -rwxr-xr-x 1 root root 1259136 Jan 26  2017 ha_innodb_plugin.so.0.0.0 [root@ip-172-31-6-148 plugin]#

执行Install命令安装InnoDB引擎

mysql> INSTALL PLUGIN InnoDB SONAME 'ha_innodb_plugin.so'; Query OK, 0 rows affected (0.23 sec)  mysql>

如果没有ha_innodb_plugin.so文件则需要考虑重新编译InnoDB引擎。

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mysql

root权限

InnoDB

scm

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