Bug #109294 $MYSQL_HOME/my.cnf is read from other mysql programs (not only server)

Submitted:	6 Dec 2022 10:16	Modified:	6 Dec 2022 10:35
Reporter:	Tsubasa Tanaka (OCA)	Email Updates:
Status:	Verified	Impact on me:	None
Category:	MySQL Server: Documentation	Severity:	S3 (Non-critical)
Version:	8.0.31	OS:	Any
Assigned to:		CPU Architecture:	Any

Description:
$MYSQL_HOME/my.cnf is described "server only" in https://dev.mysql.com/doc/refman/8.0/en/option-files.html

> $MYSQL_HOME/my.cnf	Server-specific options (server only)

But actually, other mysql programs read $MYSQL_HOME/my.cnf. Not "server only".

How to repeat:
$ echo -e "[mysql]\nsocket=/dummy" > /tmp/my.cnf
$ export MYSQL_HOME=/tmp  ## $MYSQL_HOME/my.cnf is /tmp/my.cnf
                          ## If clients don't read $MYSQL_HOME/my.cnf, socket is not "/dummy" .
$ mysql                   ## But actually, mysql commandline-client read /tmp/my.cnf and set --socket=dummy
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/dummy' (2)

Suggested fix:
Fix the reference manual. 
$MYSQL_HOME/my.cnf is not read only server, all mysql programs read it.

https://dev.mysql.com/doc/refman/8.0/en/option-files.html

Hello tanaka-San,

Thank you for the report and feedback.

regards,
Umesh

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