Installation and application of MySQL 8.0 under Linux

Linux Next MySql 8.0 Installation and Application

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• 8.0 There are some differences with the previous version , Many old versions of the commands on the Internet are no longer applicable , We should pay attention to distinguish . You can refer to this
• When I install on Alibaba cloud server mysql, And set up the database 、 After the server , Found during local testing navicat Only through SSH The way to connect , Not directly through ip&port Connect . After the screening , Because mysqld.cnf file （ stay etc Under the table of contents ） Bound in ip by 127.0.0.1 As a result of , Change it to 0.0.0.0, Just restart the service （ It can be used netstat -an | grep 3306 Check it out. ）.

operating system ：Ubuntu 20.04 64 position

install mysql

• apt update
• apt install mysql

Create database

 > mysql -u root
 > use mysql
 > create database mahuablog

Create table

    > use mahuablog
    > create table BlogTag(  
    > Id int primary key auto_increment,   
    > Name varchar(20) not null,   
    > Color int);

install Mycli Tools

 root> apt install mycli
 root> mycli -u root
mysql>

The tool provides sql Highlight , Intelligent prompt and other functions .

Let go of the port , Open remote connection

• Install firewall commands ufw

> apt install ufw

• View current status

> ufw status

• Let go of the port

> ufw allow 3306

• restart

> ufw reload

modify mysql The configuration file

> cd /etc/mysql/mysql.conf.d
> vi mysqld.cnf
 find bind-address =‘127.0.0.1’, Change it to bind-address = 0.0.0.0  Then save to exit 
> sudo service mysql restart

Connect remotely to mysql

Generally speaking , Direct use ROOT The user's account and password cannot be used to connect , The instant password is correct .

MYSQL 8.0 Newly added in mysql_native_password function , Make a remote connection by changing the password of this function

mysql> ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password by ' Your password '