MySQL不会更新max_allowed_pa​​cket

Question

关于更改mysql的max_allowed_packet变量，有很多问题。到目前为止给出的建议都没有帮助我。我在OSX 10.10.4上，并在〜/ .my.cnf

中有以下内容

[mysqld]
user = root
password = redacted
general_log=1
log=/var/log/mysql-query.log
max_allowed_packet = 32M

[mysqldump]
max_allowed_packet = 32M
user = root
password = redacted

[mysql]
max_allowed_packet = 32M

我停止服务并确保它已停止。然后我重新启动服务并查询：

SHOW VARIABLES LIKE '%max_allowed_packet%';

这给了我同样的东西：

Variable_name              Value
max_allowed_packet         1048576
slave_max_allowed_packet   1073741824

我正在运行MySQL 5.5.29，并且在这些地方没有其他配置文件：

/etc/my.cnf 
/etc/mysql/my.cnf 
/usr/local/mysql/etc/my.cnf

任何有助于提高我的1M限制的帮助都将受到极大的赞赏和赞成。

Answer 1

希望我能等待一个不那么激烈的解决方案，但我不得不放弃本机包安装版本。在备份了我的所有数据库后，我转而使用了酿造版本：

除去

sudo /usr/local/mysql/support-files/mysql.server stop
sudo rm /usr/local/mysql
sudo rm -rf /usr/local/mysql*
sudo rm -rf /Library/StartupItems/MySQLCOM
sudo rm -rf /Library/PreferencePanes/My*
sudo rm /Library/LaunchDaemons/com.mysql.mysql.plist
sudo rm -rf /Library/Receipts/mysql*
sudo rm -rf /Library/Receipts/MySQL*
sudo rm -rf /private/var/db/receipts/*mysql*
sudo rm -rf /var/db/receipts/com.mysql.*

安装

brew install -v mysql
cp -v $(brew --prefix mysql)/support-files/my-default.cnf $(brew --prefix)/etc/my.cnf
cat >> $(brew --prefix)/etc/my.cnf <<'EOF'

# my changes
max_allowed_packet = 32M
innodb_file_per_table = 1
EOF

sed -i '' 's/^#[[:space:]]*\(innodb_buffer_pool_size\)/\1/' $(brew --prefix)/etc/my.cnf
brew services start mysql
$(brew --prefix mysql)/bin/mysql_secure_installation