Mysql 8.0 Windows installation detailed process

The installation process of MySQL 8.0 Windows zip is introduced, as follows

Prepare:

MySQL8.0 Windows zip package download address .

Environment: Windows 10

1. Installation

1. Unzip the zip package to the installation directory

For example, my installation directory is: D:\Program\MySQL

2. Configuration file

In the Windows system, the default configuration file is the my.ini file in the installation directory. Some configurations need to be configured during the initial installation, and most of them can also be changed after the installation is complete. Of course, in extreme cases, all can be changed.

Add my.ini in the installation root directory, for example, here is: D:\Program\MySQL\my.ini, write the basic configuration:

[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

# These are commonly set, remove the # and set as required.
basedir = D:\Program\MySQL
datadir = D:\DBs\MySQL
port = 3306
# 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

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

character-set-server = utf8mb4

performance_schema_max_table_instances = 600
table_definition_cache = 400
table_open_cache = 256

[mysql]
default-character-set = utf8mb4

[client]
default-character-set = utf8mb4

Note that the basedir inside is my local installation directory, and datadir is the location where my database data files are to be stored. All configurations need to be configured according to your own environment.

To view all configuration items, please refer to: MySQL 8.0 Reference Manual

3. Initialize the database

Execute the command in the bin directory of the MySQL installation directory:

?

mysqld --initialize --console

After the execution is complete, the initial default password of the root user will be printed, for example:

2018-04-20T02:35:01.507037Z 0 [Warning] [MY-010915] [Server] 'NO_ZERO_DATE', 'NO_ZERO_IN_DATE' and 'ERROR_FOR_DIVISION_BY_ZERO' sql modes should be used with strict mode. They will be merged with strict mode in a future release.
2018-04-20T02:35:01.507640Z 0 [System] [MY-013169] [Server] D:\Program\MySQL8\bin\mysqld.exe (mysqld 8.0.11) initializing of server in progress as process 11064
2018-04-20T02:35:01.508173Z 0 [ERROR] [MY-010340] [Server] Error message file 'D:\Program\MySQL\share\english\errmsg.sys' had only 1090 error messages, but it should contain at least 4512 error messages. Check that the above file is the right version for this program!
2018-04-20T02:35:05.464644Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: APWCY5ws&hjQ
2018-04-20T02:35:07.017280Z 0 [System] [MY-013170] [Server] D:\Program\MySQL8\bin\mysqld.exe (mysqld 8.0.11) initializing of server has completed

其中，第4行的“APWCY5ws&hjQ”就是初始密码，在没有更改密码前，需要记住这个密码，后续登录需要用到。

要是你手贱，关快了，或者没记住，那也没事，删掉初始化的 datadir 目录，再执行一遍初始化命令，又会重新生成的。当然，也可以使用安全工具，强制改密码，用什么方法，自己随意。

参考：链接地址

4.安装服务

在MySQL安装目录的 bin 目录下执行命令：

mysqld --install [服务名]
后面的服务名可以不写，默认的名字为 mysql。当然，如果你的电脑上需要安装多个MySQL服务，就可以用不同的名字区分了，比如 mysql5 和 mysql8。

安装完成之后，就可以通过命令net start mysql启动MySQL的服务了。

参考：链接地址

二.更改密码和密码认证插件

在MySQL安装目录的 bin 目录下执行命令：

?

mysql -uroot -p

这时候会提示输入密码，记住了第3步的密码，填入即可登录成功，进入MySQL命令模式。

在MySQL8.0.4以前，执行

?

SET PASSWORD=PASSWORD('[修改的密码]');

就可以更改密码，但是MySQL8.0.4开始，这样默认是不行的。因为之前，MySQL的密码认证插件是“mysql_native_password”，而现在使用的是“caching_sha2_password”。

因为当前有很多数据库工具和链接包都不支持“caching_sha2_password”，为了方便，我暂时还是改回了“mysql_native_password”认证插件。

在MySQL中执行命令：

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ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';

修改密码验证插件，同时修改密码。

如果想默认使用“mysql_native_password”插件认证，可以在配置文件中配置default_authentication_plugin项。

[mysqld]
default_authentication_plugin=mysql_native_password

参考：链接地址

三、速度测试

不用测了，官方说MySQL8比5快两倍。

 

wget https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.11-linux-glibc2.12-x86_64.tar.gz

shell> tar zxvf mysql-8.0.11-linux-glibc2.12-x86_64.tar.gz -C /usr/local/
shell> groupadd mysql

shell> useradd -r -g mysql -s /bin/false mysql

shell> cd /usr/local

shell> ln -s mysql-8.0.11-linux-glibc2.12-x86_64 mysql

shell> cd mysql

shell> mkdir mysql-files

shell> chown mysql:mysql mysql-files

shell> chmod 750 mysql-files

shell> bin/mysqld --initialize --user=mysql

shell> bin/mysql_ssl_rsa_setup

shell> bin/mysqld_safe --user=mysql &

# Next command is optional

shell> cp support-files/mysql.server /etc/init.d/mysql.server

参考：链接地址