什么时候该用这个 my.cnf?
用来恢复缺失的默认文件、确认发行版本带了什么,或拿你的 MySQL config 做 diff。
# For advice on how to change settings please see # http://dev.mysql.com/doc/refman/8.4/en/server-configuration-defaults.html [mysqld] # # Remove leading # and set to the amount of RAM for the most important data # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. # innodb_buffer_pool_size = 128M # # Remove the leading "# " to disable binary logging # Binary logging captures changes between backups and is enabled by # default. It's default setting is log_bin=binlog # disable_log_bin # # Remove leading # to set options mainly useful for reporting servers. # The server defaults are faster for transactions and fast SELECTs. # Adjust sizes as needed, experiment to find the optimal values. # join_buffer_size = 128M # sort_buffer_size = 2M # read_rnd_buffer_size = 2M datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid
curl https://exampleconfig.com/api/v1/config/original/fe2f3d6d19d68dd1363a1dfc7b757c95?hint=my.cnf
wget -O my.cnf https://exampleconfig.com/api/v1/config/original/fe2f3d6d19d68dd1363a1dfc7b757c95?hint=my.cnf
<prompt><role>DevOps agent</role><source url='https://exampleconfig.com/api/v1/config/original/fe2f3d6d19d68dd1363a1dfc7b757c95?hint=my.cnf' /><config><app>MySQL</app><os>Red Hat Enterprise Linux 9 (Plow)</os><location>/etc/my.cnf</location><lines>26</lines><md5>fe2f3d6d19d68dd1363a1dfc7b757c95</md5><sha256>9c8b66aec85e40c595bd1b3324db589622aed377cc56bb69d237baeba4fcb302</sha256></config></prompt>
粘贴到 Claude、ChatGPT 或任何 AI 助手里。
sudo apt update && sudo apt install mysql-server
sudo yum install mysql-server
sudo apt update && sudo apt install mysql-server
什么时候该用这个 my.cnf?
用来恢复缺失的默认文件、确认发行版本带了什么,或拿你的 MySQL config 做 diff。
怎么恢复 MySQL 的默认配置?
下载文件,把 /etc/my.cnf 里的当前配置备份好,替换掉,然后 reload 或 restart MySQL。
my.cnf 适合直接上生产吗?
这是 Red Hat Enterprise Linux 9 (Plow) 的厂商默认配置,只能当基线。上生产前请检查安全和性能设置。
和其他 OS 版本有什么不同?
默认值会随发行版和版本变化,这份对应 Red Hat Enterprise Linux 9 (Plow)。
我可以用它来排查 MySQL 吗?
可以。和你的配置做 diff 找出漂移,然后只恢复需要的段落。