1. Download the tar package, which is downloaded from the official website using wget

wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz

2. Install mysql under / usr/local/mysql

# decompression
tar -xvf mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz

# move
mv mysql-5.7.22-linux-glibc2.12-x86_64 /usr/local/

# rename
mv /usr/local/mysql-5.7.22-linux-glibc2.12-x86_64 /usr/local/mysql

3. New data directory

mkdir /usr/local/mysql/data

4. New mysql users, mysql user groups

# mysql user group
groupadd mysql

# mysql users
useradd mysql -g mysql

5. Change the owner and group of / usr/local/mysql to mysql

chown -R mysql.mysql /usr/local/mysql

6. Initialize mysql

/usr/local/mysql/bin/mysqld --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data --initialize

# If the following error occurs, execute the following command to install numactl and then re-execute the mysqld command above
/usr/local/mysql/bin/mysqld: error while loading shared libraries: libnuma.so.1: cannot open shared object file: No such file or directory
yum -y install numactl

7. Editing my.cnf

[mysqld]
datadir=/usr/local/mysql/data
basedir=/usr/local/mysql
socket=/tmp/mysql.sock
user=mysql
port=3306
character-set-server=utf8
# Cancel password validation
skip-grant-tables
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# skip-grant-tables
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

8. Opening Services

# Add mysql to the service
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql

# Boot from boot
chkconfig mysql on

# service mysql start
service mysql start

9. Setting Password

# Log in (because password authentication is cancelled in / etc/my.cnf, the password here is arbitrary)
/usr/local/mysql/bin/mysql -u root -p

# Operating mysql database
>use mysql;

# Change Password
>update user set authentication_string=password('Your password') where user='root';
>flush privileges;
>exit;

10. Delete skip-grant-tables from / etc/my.cnf

11. Log in and set the password again (I don't know why I can't operate the database without setting the password again)

/usr/local/mysql/bin/mysql -u root -p
>ALTER USER 'root'@'localhost' IDENTIFIED BY 'Modified password';
>exit;

12. Allow remote connection

/usr/local/mysql/bin/mysql -u root -p

>use mysql;
>update user set host='%' where user = 'root';
>flush privileges;
>eixt;

13. Add shortcuts

ln -s /usr/local/mysql/bin/mysql /usr/bin

1. Create a database

CREATE DATABASE `testdb` DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

# Permanently disable firewalls (virtual machines need to be restarted)
systemctl disable firewalld.service
reboot

# Check the IP address on the virtual machine
ifconfig

15. Remote connection mysql

mysql -h 172.16.128.128 -u root -p
> show databases;