Windows下MySQL的安装

对下载的工具包进行解压

进入到安装目录,新建my.ini文件

[mysqld]
# 设置3306端口
port=3306
# 设置mysql的安装目录   ----------是你的文件路径-------------
basedir=F:\mysql\mysql5.7.35
# 设置mysql数据库的数据的存放目录  ---------是你的文件路径data文件夹自行创建
datadir=F:\mysql\mysql5.7.35\data
# 允许最大连接数
max_connections=20
# 允许连接失败的次数。
max_connect_errors=10
# 服务端使用的字符集默认为utf8mb4
character-set-server=utf8mb4
# 创建新表时将使用的默认存储引擎
default-storage-engine=INNODB
# 默认使用“mysql_native_password”插件认证
#mysql_native_password
default_authentication_plugin=mysql_native_password
[mysql]
# 设置mysql客户端默认字符集
default-character-set=utf8mb4
[client]
# 设置mysql客户端连接服务端时默认使用的端口
port=3306
default-character-set=utf8mb4

以管理员身份运行命令提示符cmd,进入到安装目录的bin目录下
```
mysqld --install

# 显示successfully即为成功
```

输出MySQL的密码

mysqld --initialize --console

F:\mysql\mysql5.7.35\bin>mysqld --initialize --console
2022-10-15T02:48:46.260597Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2022-10-15T02:48:46.771286Z 0 [Warning] InnoDB: New log files created, LSN=45790
2022-10-15T02:48:46.806884Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2022-10-15T02:48:46.888696Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: e3e5d408-4c33-11ed-a627-80e82c7421a3.
2022-10-15T02:48:46.892960Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2022-10-15T02:48:48.918962Z 0 [Warning] A deprecated TLS version TLSv1 is enabled. Please use TLSv1.2 or higher.
2022-10-15T02:48:48.919348Z 0 [Warning] A deprecated TLS version TLSv1.1 is enabled. Please use TLSv1.2 or higher.
2022-10-15T02:48:48.922440Z 0 [Warning] CA certificate ca.pem is self signed.
2022-10-15T02:48:49.269783Z 1 [Note] A temporary password is generated for root@localhost: y%6XXmtSF5pd

# y%6XXmtSF5pd 就是密码

启动mysql
```
net start mysql
```

登录mysql

mysql -u root -p

# 密码是刚才输出的 y%6XXmtSF5pd

更改mysql的密码

# ALTER USER 'root'@'localhost' IDENTIFIED BY '你的密码';
ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';

退出
```
exit
```

配置环境变量

# windows左下角搜索'编辑系统环境变量'
# 高级 -- 环境变量 -- 新建
# 变量名:MYSQL_HOME
# 变量值:安装路径
# 确定
# 找到Path
# 编辑 -- 新建 -- %MYSQL_HOME%\bin
# 确定保存

Linux下MySQL的安装

创建存放文件的目录
```
mkdir -p /root/opt/software
```
上传mysql文件 MySQL-5.5.40-1.el7.x86_64.rpm-bundle.tar到software
```
mv MySQL-5.5.40-1.el7.x86_64.rpm-bundle.tar /指定目录
```

检查是否有自带的数据库

rpm -qa | grep mariadb

# 如果有的话进行删除/卸载
rpm -e 文件 --nodeps
rpm -e mariadb-libs-5.5.64-1.el7.x86_64 --nodeps

安装依赖
```
 yum install -y perl
```
在software下创建mysql文件夹
```
mkdir mysql
```

解压MySQL-5.5.40-1.el7.x86_64.rpm-bundle.tar到mysql文件夹下

tar -xvf MySQL-5.5.40-1.el7.x86_64.rpm-bundle.tar -C /root/opt/software/mysql/

安装服务器和客户端

cd mysql
# 服务器
rpm -ivh MySQL-server-5.5.40-1.el7.x86_64.rpm 
# 客户端
rpm -ivh MySQL-client-5.5.40-1.el7.x86_64.rpm

启动mysql服务
```
systemctl start mysql
```
检查mysql服务
```
systemctl status mysql
```
开启客户端
```
mysql -uroot
```
设置mysql的密码
```
mysql> set password=password('123456')
```

设置远程连接

mysql> grant all on *.* to 'root'@'%' identified by '123456';

刷新权限
```
mysql> flush privileges;
```
退出
```
mysql> exit
```

Windows和Linux下MySQL的安装

Windows下MySQL的安装

Linux下MySQL的安装

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