mysql 配置 安装和 root password 更改

第一步：

修改my.ini文件，替换为以下内容 （skip_grant_tables***重点）

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html 

# *** DO NOT EDIT THIS FILE. It's a template which will be copied to the
# *** default location during install, and will be replaced if you
# *** upgrade to a newer version of MySQL.

[mysqld]

# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at % of total RAM for dedicated server, else %.
# 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

# These are commonly set, remove the # and set as required.
# basedir = .....
# datadir = .....
# port = .....
# server_id = .....

# 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 

#########################################################
    [client]
    port=
    default-character-set=utf8
    [mysqld]
    skip_grant_tables
    port=
    character_set_server=utf8
    basedir=E:\mysql-5.7.-winx64
    #解压目录
    datadir=E:\mysql-5.7.-winx64\data
    #解压目录下data目录
    sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
    [WinMySQLAdmin]
    E:\mysql-5.7.-winx64\bin\mysqld.exe
########

第二步：

进入到MySQL的安装目录，按 shift+(鼠标右键) 点击命令行窗口   使用mysqld --initialize 进行初始化   （会在安装目录下创建一个data文件夹）

第三步：

在安装目录文件夹下 进入命令行模式 shift+(鼠标右键) 使用 net start mysql  启动服务

使用 mysql -uroot -p无密码登录

进入之后

mysql> use mysql;

mysql> update user set authentication_string=password("123") where user="root";（别忘了最后加分号)

mysql>flush privileges;

mysql>quit;

第四步：

进入my.ini文件将skip_grant_tables注释

重新进入命令行

net stop mysql

net start mysql (重新启动服务)

mysql -uroot -p

(使用更改后的密码登录)

succeed;

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最后温馨提示：如果net start mysql 提示无法启动服务，且没有提示错误 可以将 data 文件夹删除  重新初始化 启动一下