MySQL运行状况查询方式_MySQL
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MySQL运行状况查询方式
SHOW STATUS
直接在命令行下登陆MySQL运行SHOW STATUS;查询语句，详细如下图
同样的语句还有SHOW VARIABLES;，SHOW STATUS是查看MySQL运行情况，和上面那种通过pma查看到的信息基本类似。
SHOW VARIABLES
SHOW VARIABLES是查看MySQL的配置参数，还可以使用类似SHOW VARIABLES LIKE 'Key%'
SHOW PROCESSLIST
SHOW PROCESSLIST是查看当前正在进行的进程，对于有锁表等情况的排查很有用处。一般情况下，打开MySQL的慢查询记录同样有利于排查。
SHOW OPEN TABLES
SHOW OPEN TABLES是显示当前已经被打开的表列表。
mysqladmin status
使用MySQL自带的mysqladmin 工具查看status，使用以下命令
mysqladmin -uroot --password='password' status
显示的结果如下：
Uptime: 87117 Threads: 1 Questions: 5481626 Slow queries: 16 Opens: 2211 Flush tables: 1 Open tables: 512 Queries per second avg: 62.923
另外可以添加 -i 5 参数，让其每五秒自动刷新之。
mysqladmin -uroot --password='password' status -i 5
mysqladmin extended-status
同样的可以使用mysqladmin -uroot --password='password' extended-status来查看更多的MySQL运行信息，这种方式和第一种查看的信息基本一样。
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