Home Database Mysql Tutorial 【MySQL】查看MySQL配置文件路径及相关配置_MySQL

【MySQL】查看MySQL配置文件路径及相关配置_MySQL

Jun 01, 2016 pm 01:31 PM
server Configuration file

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【MySQL】查看MySQL配置文件路径及相关配置

 

(1)关于配置文件路径

 

有时候,我发现虽然尝试修改了配置文件的一些变量,但是并没有生效。后来才发现原来是因为修改的文件并非MySQL服务器读取的配置文件。

 

如果不清楚MySQL当前使用的配置文件路径,可以尝试这样查看:

 

【MySQL】查看MySQL配置文件路径及相关配置_MySQL

 

从上图可以看出, 服务器首先会读取/etc/my.cnf文件,如果发现该文件不存在,再依次尝试从后面的几个路径进行读取。

 

(2)关于配置文件配置项分段

 

配置文件my.cnf通常会分成好几部分,如[client],[mysqld], [mysql]等等。MySQL程序通常是读取与它同名的分段部分,例如服务器mysqld通常读取[mysqld]分段下的相关配置项。如果配置项位置不正确,该配置是不会生效的。

 

(3)关于全局变量

 

另外,如果想查看MySQL的一些全局变量设置,在非登录并有权限情况下可以这样查看:

mysqladmin variables -p
Copy after login

这个操作也就相当于登录时使用命令

 show global variables;
Copy after login

 


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