你太近了！ kill -HUP 方法也不能为我工作。

您正在呼叫：

 选择@@ global.max_connections; 
 

只需设置而不是select：

  set @@ global.max_connections = 400; 
 

请参阅：

http://www.netadmintools.com/art573.html

http://www.electrictoolbox.com/update-max-connections-mysql /

Apache has such a feature, what about MySQL?

Does one exist?

You were so close! The kill -HUP method wasn't working for me either.

You were calling:

select @@global.max_connections;

All you needed was to set instead of select:

set @@global.max_connections = 400;

See:

http://www.netadmintools.com/art573.html

http://www.electrictoolbox.com/update-max-connections-mysql/