Ubuntu 18.04.4安装mysql的过程详解 亲测可用

下面看下Ubuntu 18.04.4安装mysql的过程，内容如下所示：

1 sudo apt-get update

2 sudo apt-get install mysql-server

3 sudo mysql_secure_installation # 初始化配置

#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)

4 systemctl status mysql.service # 检查服务器状态

4 systemctl status mysql.service # 检查服务器状态running代表无问题

5 修改mysql 端口号以及将监听地址改为所有

vim /etc/mysql/mysql.conf.d/mysqld.cnf # 编辑配置文件

bind-address            = 0.0.0.0  #将监听ip修改为所有

port            = 3388  # 监听端口修改为3388，可以不改我这是为了安全

修改完毕之后重启服务

systemctl restart mysql.service

6 开放mysql远程访问

1 登录数据库

mysql -u root -p

2 切换到数据库mysql

use mysql

3 删除匿名用户

delete from user where user=”;

4 增加允许远程访问的用户或者允许现有用户的远程访问

给root授予在任意主机（%）访问任意数据库的所有权限

mysql> grant all privileges on *.* to ‘root’@’%’ identified by ‘这里替换成你想要设置的密码’ with grant option;

flush privileges;

5 退出数据库

mysql> exit

6 重启数据库

sudo service mysql restart

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