mysql5.7重新初始化_MySQl 5.7 初始化方式变更

Window 64:

1.修改my-default.ini名称 ==> my.ini

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[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 leading # to turn on a very important data integrity option: logging

# changes to the binary log between backups.

log_bin=mysql-bin

# These are commonly set, remove the # and set as required.

basedir = D:/MySQL/mysql-5.7.12-winx64

datadir = D:/MySQL/mysql-5.7.12-winx64/data

port = 3306

server_id = 10

?2.初始化数据文件

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mysqld --defaults-file=../my.ini --initialize --console

?–initialize 初始化数据文件，设置root账号密码为随机密码，注意查看输出日志

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3.安装/删除mysql服务

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mysqld install mysql57

sc delete mysql57

?4.启动/停止mysql

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net start mysql57

net stop mysql57

?5.连接mysql ，修改root密码

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ALTER USER ‘root‘@‘localhost‘ IDENTIFIED BY ‘new_password‘;

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Centos :

1.创建mysql 用户

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groupadd mysql

useradd -r -g mysql mysql

?2.初始化数据文件

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mysqld --initialize --user=mysql --datadir=./data --basedir=.

?若找不到mysqld命令，配置环境变量

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MYSQL_HOME=/opt/mysql-5.7.12

PATH=$MYSQL_HOME/bin:$PATH

export PATH

?3.将mysql/support-files下的my-default.cnf改名为my.cnf,拷贝到/etc目录下

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[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 leading # to turn on a very important data integrity option: logging

# changes to the binary log between backups.

log_bin=mysql-bin

# These are commonly set, remove the # and set as required.

basedir = /opt/mysql/mysql-5.7.12

datadir = /opt/mysql/mysql-5.7.12/data

port = 3306

server_id = 10

socket = /opt/mysql/mysql-5.7.12/tmp/mysql.sock

[client]

socket = /opt/mysql/mysql-5.7.12/tmp/mysql.sock

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4.设置mysql以服务运行并且开机启动?将MYSQL_HOME/ support-files/mysql.server 拷贝为/etc/init.d/mysql并设置运行权限

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cp mysql.server /etc/init.d/mysql

chmod +x /etc/init.d/mysql

?把mysql注册为开机启动的服务

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chkconfig --add mysql

?5.启动/停止mysql

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/etc/init.d/mysql start

/etc/init.d/mysql stop

?6.连接mysql ，修改root密码

ALTER USER ‘root‘@‘localhost‘ IDENTIFIED BY ‘new_password‘;

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原文：http://silentwu.iteye.com/blog/2308722