CentOS7 - yum install mysql

Check if mysql is installed on the system first

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[[email protected] ~]#yum list installed mysql*

[[email protected] ~]#rpm –qa|grep mysql*

2. Check if there is an installation package

[[email protected] ~]#yum list mysql*

3. Install mysql client

[[email protected] ~]#yum install mysql

Note that mariab is installed by default here

4. Install mysql server (prompt)

Tip: If there is no error when entering this command, skip the following steps and continue to install the next server

[[email protected] ~]#yum install mysql-server

Note: The error here is that Mysql installation failed, and MariaDB is installed

Reason: CentOS7 comes with MariaDB instead of MySQL, MariaDB and MySQL are also Kaiyuan's database

5. Install mysql server (processing method) download MySQL source installation package

Go to the official website to view the latest installation package

https://dev.mysql.com/downloads/repo/yum/

Copy this download address and use wget to download to linux.

If the wget tool is not installed, use yum -y installwget to install it first.

Use wget + download address to download to Linux local, and then use yum to install.

Check the installation effect

yum repolist enabled | grep mysql.*

Install MySQL Server

yum -y install mysql-community-server

Start MySQL service

systemctl start mysqld.service

Run the command to check the running status

systemctl status mysqld.service

Initialize database password

Check the initial password

grep "password" /var/log/mysqld.log

Direct copy input password error

The reason is that ! is a special character and needs to be escaped and written as ! to be successfully recognized.

Login

mysql -uroot -p

Change password

ALTER USER 'root'@'localhost' IDENTIFIED BY '****************';

mysql has a password security check plug-in (validate_password) installed by default. The default password check policy requires that the password must contain: uppercase and lowercase letters, numbers and special symbols, and the length cannot be less than 8 characters.

Otherwise it will prompt ERROR 1819 (HY000): Your password does not satisfy the current policy requirements error

Six: Database Authorization

The database is not authorized, only supports localhost local access

mysql>GRANT ALL PRIVILEGES ON *.* TO?``'root'``@``'%'``IDENTIFIED BY?``'123456'``WITH GRANT OPTION;

//``You need to enter a username and password when connecting to the database remotely

Username: root

Password: 123456

Pointing ip:% represents all IPs, you can also input IP here to specify IP

The following statement is required for the modification to take effect after inputting

mysql>FLUSH PRIVILEGES;

Remote can also be achieved by modifying the table:

mysql -u root -pmysql> use mysql;mysql> update user set host = '%' where user = 'root';mysql> select host, user from user;

Seven: Set auto-start

systemctl enable mysqld

systemctl daemon-reload

8 Firewall Settings

Refer to thisCentOS7Install MySQL, modify the port - BlackManZhang - Blog Park

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