mysql启动分析

1、mysql启动配置文件加载路径

/etc/my.cnf/

/etc/mysql/my.cnf

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

~/.my.cnf

2、mysql启动方式

service mysqld start

/etc/init.d/mysqld start

说明mysqld来自

cp /usr/local/mysql/support-file/mysql.server /etc/init.d/mysqld

以下3种方式，可用启动多实例

/usr/local/mysql/bin/mysqld_safe -defaults-file=/path/my.cnf &

/usr/local/mysql/bin/mysqld -defaults-file=/path/my.cnf &

/usr/local/mysql/bin/mysqld_multi start 3306

3、mysql多实例的意义

随着连接数上升，性能下降

做资源隔离

利用mysqld_muti启动管理多实例

准备一个配置文件/etc/my.cnf

[mysql_mutli]

mysqld=

mysqladmin=/usr/local/mysql/bin/mysqladmin

user=

password=

[mysql3306]

port =3306

socket =/tmp/mysql3306.sock

datadir =/data/mysql/mysql3306/data

tmdir =/data/mysql/mysql3306/tmp

server-id=1003306

[mysql3307]

port =3307

socket =/tmp/mysql3307.sock

datadir =/data/mysql/mysql3307/data

tmdir =/data/mysql/mysql3307/tmp

server-id=1003307

时间： 2025-01-02 18:29:01

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