Ubuntu18.04 安装MySQL及配置

﹏ヽ暗。殇╰゛Y 2022-04-25 03:14 197阅读 0赞

环境信息：  
OS：Ubuntu18.04  
MySQL: 5.7.22

##### 1.安装MySQL #####

在 Ubuntu 18.04 中，默认情况下，只有最新版本的 MySQL 包含在 APT 软件包存储库中,要安装它，只需更新服务器上的包索引并安装默认包 apt-get。

#命令1
    sudo apt-get update
    #命令2
    sudo apt-get install mysql-server
    #命令3
    sudo apt-get install mysql-client

![这里写图片描述][2018062311511088]

##### 2.配置MySQL #####

2.1 安装配置

sudo mysql_secure_installation
     
      
     
      
       1

配置项较多，如下所示：

#1
    VALIDATE PASSWORD PLUGIN can be used to test passwords...
    Press y|Y for Yes, any other key for No: N (我的选项)
    
    #2
    Please set the password for root here...
    New password: (输入密码)
    Re-enter new password: (重复输入)
    
    #3
    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...
    Remove anonymous users? (Press y|Y for Yes, any other key for No) : N (我的选项)
    
    #4
    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) : Y (我的选项)
    
    #5
    By default, MySQL comes with a database named 'test' that
    anyone can access...
    Remove test database and access to it? (Press y|Y for Yes, any other key for No) : N (我的选项)
    
    #6
    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 (我的选项)
     
      
     部分图示： 
    
     
    
    
    
     2.2 检查mysql服务状态：
    
    
    
     systemctl status mysql.service
      
       
      
       
        1

显示如下结果说明mysql服务是正常的：

● mysql.service - MySQL Community Server
       Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: en
       Active: active (running) since Sat 2018-06-23 11:09:03 CST; 6min ago
     Main PID: 14078 (mysqld)
        Tasks: 29 (limit: 4915)
       CGroup: /system.slice/mysql.service
               └─14078 /usr/sbin/mysqld --daemonize --pid-file=/run/mysqld/mysqld.pi
    6月 23 11:09:02 weision systemd[1]: Starting MySQL Community Server...
    6月 23 11:09:03 weision systemd[1]: Started MySQL Community Server.
    
     
      
     
      
       3.配置远程访问 在Ubuntu下MySQL缺省是只允许本地访问的，使用workbench连接工具是连不上的； 如果你要其他机器也能够访问的话，那么需要改变/etc/mysql/my.cnf配置文件； 3.1 首先用根用户进入： sudo mysql -u root -p
       
         
    
     默认的MySQL安装之后根用户是没有密码的，命令执行后会让你设置root的密码，进入root后才能进行其他设置： 
    
     
    
    以root进入mysql后也可用命令给root设置密码：
    
    
    
     GRANT ALL PRIVILEGES ON *.* TO root@localhost IDENTIFIED BY "123456";
        
          
    
      
    
    3.2 新建数据库和用户 
    
    用root用户新建数据和用作远程访问的用户
    
     ##1 创建数据库weixx
    CREATE DATABASE weixx;
    ##2 创建用户wxx(密码654321) 并赋予其weixx数据库的所有权限
    GRANT ALL PRIVILEGES ON weixx.* TO wxx@localhost IDENTIFIED BY "654321";
         
           
    
     
    
     3.3 进行远程访问或控制配置
    
    
    
     ##1 允许wxx用户可以从任意机器上登入mysql
    GRANT ALL PRIVILEGES ON weixx.* TO wxx@"%" IDENTIFIED BY "654321";

[2018062311511088]: /images/20220210/e5834c7e7a594a819c6981a243ea3f56.png