Ubuntu18.04 安装MySQL

港控/mmm° 2022-02-22 15:38 224阅读 0赞

Ubuntu18.04 安装MySQL  
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

![è¿éåå¾çæè¿°][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：

![è¿éåå¾çæè¿°][20180623115918686]

![è¿éåå¾çæè¿°][20180623115937228]

2.2 检查mysql服务状态：

systemctl status mysql.service

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.

![è¿éåå¾çæè¿°][20180623120553804]  
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 -uroot -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：

![è¿éåå¾çæè¿°][20180623121958711]

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";

![è¿éåå¾çæè¿°][20180623122606359]

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";

![è¿éåå¾çæè¿°][2018062312312937]  
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";

![è¿éåå¾çæè¿°][20180623123506986]

$sudo gedit /etc/mysql/my.cnf
    ##在最后添加如下配置，允许其他机器访问MySQL
    >skip-networking => # skip-networking

到此位置，就配置好了。

4.使用workbench连接数据库  
打开workbench进行连接配置：

配置完成后，在主界面选择weixx数据库进行连接：

\---------------------   
作者：尘埃安然   
来源：CSDN   
原文：https://blog.csdn.net/weixx3/article/details/80782479   
版权声明：本文为博主原创文章，转载请附上博文链接！

[2018062311511088]: /images/20220222/881b648cc3a4410ca4eede69f80f2656.png
[20180623115918686]: /images/20220222/16220f4f53434c2aae308c785d8873c7.png
[20180623115937228]: /images/20220222/787d1f6870ab45ff8034c89a2f2e30aa.png
[20180623120553804]: /images/20220222/88507f9d08f94406b0c7ee53e4df6d87.png
[20180623121958711]: /images/20220222/404e8a4575874203a25c835fff854d21.png
[20180623122606359]: /images/20220222/c7e72130085e4799af61ef8bda61ffa0.png
[2018062312312937]: /images/20220222/d1592a23ef644db2a74884d80387d3bf.png
[20180623123506986]: /images/20220222/50740411a2c9454d907be3a497509dc3.png