Bug #58990 character-set-server defined in configuration file does not work.

• Submitted: 17 Dec 2010 1:55
• Modified: 24 Dec 2010 0:41
• Reporter: HOSHNIO Takashi
• Status: Not a Bug
• Category: MySQL Server: Charsets
• Severity: S3 (Non-critical)
• Version: 5.5.8
• OS: Linux (Ubuntu 10.04.1 x86_64)
• CPU Architecture: Any

[17 Dec 2010 1:55] HOSHNIO Takashi

Description:
Configuration parameter character-set-server does not take effect when 
it is defined in my.cnf file.
It's work fine by setting as command-line option.

This happens using official binary.
mysql-5.5.8-linux2.6-x86_64.tar.gz
MD5: 1e44ae5175158b6740e0224e7a004f42

my.cnf
[client]
default-character-set = utr8mb4
[mysqld]
character-set-server = utf8mb4

status output:
Server characterset:    latin1
Db     characterset:    latin1
Client characterset:    utf8
Conn.  characterset:    utf8

I could not reproduce the problem with my own build.

Environment: Ubuntu server 10.04.1 x86_64
Compiler: gcc 4.4.3
Build configuration:
env \
CC=gcc \
CFLAGS='-static-libgcc -O3 -m64 -mtune=core2' \
CXX=gcc \
CXXFLAGS='-static-libgcc -O3 -m64 -mtune=core2 -felide-constructors -fno-exceptions -fno-rtti' \
cmake \
-DBUILD_CONFIG=mysql_release \
-DCMAKE_BUILD_TYPE=RelWithDebInfo \
-DWITH_DEBUG=1

How to repeat:
> cd /usr/local
> tar xzf mysql-5.5.8-linux2.6-x86_64.tar.gz
> mv mysql-5.5.8-linux2.6-x86_64 mysql
> cat > etc/my.cnf <<EOF
[client]
default-character-set = utr8mb4
[mysqld]
character-set-server = utf8mb4
EOF
> ./scripts/mysql_install_db
> ./bin/mysqld_safe&
> echo 'status;' |mysql -u root

[17 Dec 2010 7:40] Susanne Ebrecht

Many thanks for writing a bug report.

You can't set utf8mb4 at default character set.

[22 Dec 2010 9:11] Susanne Ebrecht

Many thanks for writing a bug report.

My tests show that it works well:

my.cnf:
[mysqld]
...
character-set-server = utf8mb4
...

Restart server
Connect to server
SHOW VARIABLES LIKE 'character_set_server';
=> utf8mb4

[22 Dec 2010 9:41] Alexander Barkov

There is a typo in the original report:

[client]
default-character-set = utr8mb4

It should be:

[client]
default-character-set = utf8mb4

(notice "utr" vs "utf")

This typo might be the source of the problem.

[24 Dec 2010 0:41] HOSHNIO Takashi

Sorry, this is not a bug. My configuration was wrong.
I confirmed the setting works with the official binary and correct configuration file.

Thank you.