Ubuntu18.04下安装Mysql

怼烎@ 2023-05-30 09:05 8阅读 0赞

一下操作需要在root用户权限下进行。

切换到root用户：

sudo -i

安装mysql：

apt install mysql-server

等待一些时间，待安装完成以后，

使用mysql -u root -p

来登录，刚刚开始是没有密码的，直接回车就ok。

接下来，我们需要来完成一些初始化操作：

root@ubuntu-virtual-machine:~# mysql_secure_installation
    
    Securing the MySQL server deployment.
    
    Connecting to MySQL using a blank password.
    
    VALIDATE PASSWORD PLUGIN can be used to test passwords
    and improve security. It checks the strength of password
    and allows the users to set only those passwords which are
    secure enough. Would you like to setup VALIDATE PASSWORD plugin?    # 要安装验证密码插件吗?
    
    Press y|Y for Yes, any other key for No: N    # 这里我选择N
    Please set the password for root here.
    
    New password:   # 输入要为root管理员设置的数据库密码
    
    Re-enter new password:   # 再次输入密码
    
    
    By default, a MySQL installation has an anonymous user,
    allowing anyone to log into MySQL without having to have
    a user account created for them. This is intended only for
    testing, and to make the installation go a bit smoother.
    You should remove them before moving into a production
    environment.
    
    Remove anonymous users? (Press y|Y for Yes, any other key for No) : y     # 删除匿名账户
    Success.
    
    
    Normally, root should only be allowed to connect from
    'localhost'. This ensures that someone cannot guess at
    the root password from the network.
    
    Disallow root login remotely? (Press y|Y for Yes, any other key for No) : N    # 禁止root管理员从远程登录，这里我没有禁止
    
    ... skipping.
    By default, MySQL comes with a database named 'test' that
    anyone can access. This is also intended only for testing,
    and should be removed before moving into a production
    environment.
    
    
    Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y   # 删除test数据库并取消对它的访问权限
    - Dropping test database...
    Success.
    
    - Removing privileges on test database...
    Success.
    
    Reloading the privilege tables will ensure that all changes
    made so far will take effect immediately.
    
    Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y   # 刷新授权表，让初始化后的设定立即生效
    Success.
    
    All done!

检测mysql的服务状态：

systemctl status mysql

再次使用mysql -u root -p来登录，只不过现在需要输入刚才设置的密码了。

现在配置mysql允许远程访问，首先编辑 /etc/mysql/mysql.conf.d/mysqld.cnf 配置文件：

vim /etc/mysql/mysql.conf.d/mysqld.cnf

注释掉bind-address          = 127.0.0.1

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保存退出，然后进入mysql数据库，执行授权命令：

mysql -u root -p

mysql> grant all on \*.\* to root@'%' identified by '你的密码' with grant option;

mysql> flush privileges;    \# 刷新权限

mysql> exit

然后执行exit命令退出mysql服务，再执行如下命令重启mysql：

systemctl restart mysql

现在Windows下可以使用Navicat图形化工具远程连接Ubuntu下的MySQL数据库，输入刚授权远程权限的密码。

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