三:判断mysql I/0 性能的一种方式(网络搜集供参考) show global status like 'innodb_dblwr%'\G 如果innodb_dblwr_pages_writen/innodb_dblwr_writes远小于64:1,说明磁盘写入压力不高 show engine innodb status\G 查看缓冲池的方法. select table_name,data_length+index_length,table_rows from
今天在换了Ubuntu后装个本地的mysql,安装过程没什么好说的:sudo apt-get install mysql-server 安装好了之后我做了以下一系列常规动作: 1.$sudo mysql -----------进入mysql 2.grant all privileges on *.* to 'root'@'localhost' identified by 'xxxx' ---------------------赋权设密码 3.exit 4.mysql -u root -p
最近在centos7中通过rpm方式安装了最新版本的mysql-server 5.7 (mysql57-community-release-el7-7.noarch.rpm) ,发现安装成功后无法使用root登录.百度google一番无果,最后在官方文档中找到了答案.现记录完整安装及问题解决过程,希望能帮助到其他朋友. OS版本: Linux version 3.10.0-327.el7.x86_64 (builder@kbuilder.dev.centos.org) (gcc versio
--- mysql workbench Failed to Connect to MySQL at 10.211.55.6:3306 with user root Authentication plugin 'caching_sha2_password' cannot be loaded: dlopen(/usr/local/mysql/lib/plugin/caching_sha2_password.so, 2): image not found --- navcat 连接失败 Client
登录MySQL时报错:Access denied for user 'root'@'localhost' (using password: YES) 解决步骤: 1.使用ssh工具连接主机,使用mysqld_safe命令进入安全模式: Last login: Thu Jun :: from 182.50.118.228 [root@VM_219_131_centos ~]# service msyqld status msyqld: unrecognized service [root@VM_2
查询所有数据库占用磁盘空间大小的SQL语句: 语句如下: select TABLE_SCHEMA, concat(truncate(sum(data_length)/1024/1024,2),' MB') as data_size, concat(truncate(sum(index_length)/1024/1024,2),'MB') as index_size from information_schema.tables group by TABLE_SCHEMA order by data