使用实例管理器轻松管理多个MySQL实例（2）

4、连接IM

[root@localhost ~]# mysql -uuser_all -p -S/tmp/manager.sock -P1999

三、用IM来管理MySQL数据库

1、显示实例的状态和版本信息

[root@localhost ~]# mysql -uuser_all -p -S/tmp/manager.sock -P1999

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 1

Server version: 1.0-beta

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> show instances;

+---------------+--------+

| instance_name | state |

+---------------+--------+

| mysqld1 | online |

| mysqld2 | online |

+---------------+--------+

2 rows in set (0.00 sec)

关闭实例1

mysql> stop instance mysqld1;

Query OK, 0 rows affected (0.30 sec)

mysql> show instances;

+---------------+---------+

| instance_name | state |

+---------------+---------+

| mysqld1 | offline |

| mysqld2 | online |

+---------------+---------+

2 rows in set (0.00 sec)

开启实例1

mysql> start instance mysqld1;

Query OK, 0 rows affected (0.00 sec)

Instance started

mysql> show instances;

+---------------+--------+

| instance_name | state |

+---------------+--------+

| mysqld1 | online |

| mysqld2 | online |

+---------------+--------+

2 rows in set (0.00 sec)

查看实例的版本信息

mysql> show instance status mysqld2;

+---------------+--------+----------------+

| instance_name | state | version_number | version | mysqld_compatible |

+---------------+--------+----------------+

| mysqld2 | online | 5.1.23 | 5.1.23a-maria-alpha for redhat-linux-gnu on i686 (MySQL Community Server [Maria] (GPL))

| no |

+---------------+--------+----------------+

1 row in set (0.00 sec)

也可以显示实例的选项信息

mysql> show instance options mysqld1;

+-----------------------+-----------------------------------+

| option_name | value |

+-----------------------+-----------------------------------+

| instance_name | mysqld1 |

| basedir | /usr/local/mysql |

| datadir | /usr/local/mysql/data |

| user | mysql |

| default-character-set | utf8 |

| port | 3306 |

| socket | /tmp/mysql1.sock |

| skip-locking | |

| skip-name-resolve | |

| key_buffer | 126M |

| max_allowed_packet | 2M |

| table_cache | 512 |

| sort_buffer_size | 2M |

| read_buffer_size | 2M |

| read_rnd_buffer_size | 4M |

| net_buffer_length | 2K |

| thread_stack | 64K |

| log-bin | mysql.log |

| expire_logs_days | 5 |

| wait_timeout | 20 |

| pid-file | mysqld1-localhost.localdomain.pid |

+-----------------------+-----------------------------------+

21 rows in set (0.00 sec)

也可以查询实例的日志相关信,不再赘述。

我们可以发现，管理实例其实非常方便。

2、管理用户

(1)、添加管理用户

[root@localhost ~]# /usr/local/mysql/bin/mysqlmanager --add-user

WARNING: This program is deprecated and will be removed in 6.0.

[3046/3086816960] [08/04/24 14:33:13] [INFO] IM: started.

[3046/3086816960] [08/04/24 14:33:13] [INFO] Loading config file 'my.cnf'...

Enter user name: shit_all

[3046/3086816960] [08/04/24 14:33:18] [INFO] Loading the password database...

[3046/3086816960] [08/04/24 14:33:18] [INFO] Loaded user 'user_all'.

[3046/3086816960] [08/04/24 14:33:18] [INFO] The password database loaded successfully.

Enter password:

Re-type password:

[3046/3086816960] [08/04/24 14:33:23] [INFO] IM: finished.

[root@localhost ~]# cat /etc/mysqlmanager.passwd

user_all:*6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9

shit_all:*6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9

注意:必须重新启动IM才能生效。

[root@localhost ~]# mysql -ushit_all -p -S/tmp/manager.sock -P1999

Enter password:

ERROR 1045 (28000): Access denied. Bad username/password pair

(2)、修改用户密码

[root@localhost ~]# /usr/local/mysql/bin/mysqlmanager --edit-user

WARNING: This program is deprecated and will be removed in 6.0.

[3214/3086845632] [08/04/24 14:35:15] [INFO] IM: started.

[3214/3086845632] [08/04/24 14:35:15] [INFO] Loading config file 'my.cnf'...

Enter user name: shit_all

[3214/3086845632] [08/04/24 14:35:19] [INFO] Loading the password database...

[3214/3086845632] [08/04/24 14:35:19] [INFO] Loaded user 'user_all'.

[3214/3086845632] [08/04/24 14:35:19] [INFO] Loaded user 'shit_all'.

[3214/3086845632] [08/04/24 14:35:19] [INFO] The password database loaded successfully.

Enter password:

Re-type password:

[3214/3086845632] [08/04/24 14:35:24] [INFO] IM: finished.