检测mysql server是否正常提供服务

mysqladmin -u sky -p pwd -h localhost ping

获取mysql当前的几个状态值

mysqladmin -u sky -p pwd -h localhost status

获取数据库当前的连接信息

mysqladmin -u sky -p pwd -h localhost processlist

获取当前数据库的连接数

mysql -u root -p -BNe "select host,count(host) from processlist group by host;" information_schema

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