(转）mysql监控工具箱 common_schema

​
common_schema是一个MySQL schema工具集(5.1以上版本才适用), 它通过在MySQL数据库里建立一个名为common_schema的数据库, 该数据库里包含许多有用的视图和函数, 用来做数据库分析,监控,管理和SQL代码生成, 其中大部分视图信息其实来自INFORMATION_SCHEMA数据库, 只是做了一些连接和汇总.
下载地址: http://code.google.com/p/common-schema/downloads/list
下载列表里包含如下三个发行版本:
common_schema_mysql_51: 适合所有MySQL5.1以上版本;
common_schema_innodb_plugin: 适合所有MySQL5.1(包含InnoDB插件和可用INFORMATION_SCHEMA)以上版本;
common_schema_percona_server: 适合所有Percona5.1以上版本;
对于没有使用Percona Server, 一般就使用其它两个版本, 它俩的区别就是common_schema_innodb_plugin多建了一个Innodb相关的视图. 所以一般下载安装common_schema_innodb_plugin这个发行版即可.

1 安装
# cd /u01/software/mysql/
# rz -bey (二进制上传安装文件)
# mysql -uu_test -p (以最高权限用户如root, 登录数据库)
mysql> source common_schema_innodb_plugin-r50.sql
mysql> show databases like '%schema';
+--------------------+
| Database (%schema) |
+--------------------+
| information_schema |
| common_schema |
+--------------------+
2 rows in set (0.00 sec)
mysql> use common_schema;
Database changed
mysql> show full tables;
+----------------------------+------------+
| Tables_in_common_schema | Table_type |
+----------------------------+------------+
| _columns_privileges | VIEW |
| _flattened_keys | VIEW |
| _global_status_sleep | VIEW |
| _sql_grants_components | VIEW |
| auto_increment_columns | VIEW |
| data_size_per_engine | VIEW |
| data_size_per_schema | VIEW |
| global_status_diff | VIEW |
| global_status_diff_clean | VIEW |
| global_status_diff_nonzero | VIEW |
| no_pk_innodb_tables | VIEW |
| numbers | BASE TABLE |
| processlist_per_userhost | VIEW |
| processlist_repl | VIEW |
| processlist_summary | VIEW |
| processlist_top | VIEW |
| redundant_keys | VIEW |
| routine_privileges | VIEW |
| sql_alter_table | VIEW |
| sql_foreign_keys | VIEW |
| sql_grants | VIEW |
| sql_show_grants | VIEW |
| table_charset | VIEW |
| text_columns | VIEW |
+----------------------------+------------+
24 rows in set (0.00 sec)

2 举例子
举一些还比较有用的例子.
列出数据库中所有AUTO_INCREMENT类型列:
mysql> select * from common_schema.auto_increment_columns;
列出数据库中各种存储引擎下表数量和大小, 及其最大的表信息:
mysql> select * from common_schema.data_size_per_engine;
列出数据库中各schema下表数量和大小, 及其最大的表信息:
mysql> select * from common_schema.data_size_per_schema;
列出状态变量差异(10秒间隔), 从这里在一定程度上可以看出数据库繁忙程度:
mysql> select * from common_schema.global_status_diff_nonzero;
列出进程汇总信息:
mysql> select * from common_schema.processlist_summary;
列出TOP进程信息:
mysql> select * from common_schema.processlist_top;
列出各用户和主机进程汇总信息:
mysql> select * from common_schema.processlist_per_userhost;
列出存储过程权限信息:
mysql> select * from common_schema.routine_privileges;
列出用户权限信息(类似show grants for语句):
mysql> select * from common_schema.sql_show_grants;
返回按指定分隔符分隔后的token数量:
mysql> SELECT get_num_tokens('the quick brown fox', ' ') AS num_token;
+-----------+
| num_token |
+-----------+
| 4 |
+-----------+
返回按指定分隔符分隔后的某个token:
mysql> SELECT split_token('the quick brown fox', ' ', 3) AS token;
+-------+
| token |
+-------+
| brown |
+-------+

3 所有组件说明
所有视图和函数说明参考:
http://common-schema.googlecode.com/svn/trunk/common_schema/doc/html/download.html