Detailed description of the steps for installing MySQL in cluster rpm

Install the mysql database

A) download the mysql source installation package: wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm

B) install MySQL source: yum localinstall mysql57-community-release-el7-8.noarch.rpm

If completeness appears at the end, the installation of the MySQL source is complete

C) check whether the installation is complete: yum repolist enabled | grep "mysql.*-community.*"

D) install mysql:yum install mysql-community-server

If complete appears at the end, the MySQL installation is complete.

E) set to enable and start mysql service: systemctl enable mysqld

F) check the installed mysql version: rpm-aq | grep-I mysql

G) start the MySQL service: systemctl restart mysqld

H) View MySQL initial password: grep'a temporary password' / var/log/mysqld.log

I) change the MySQL password: mysqladmin-u root-p 'old password' password 'new password'

There is a problem with changing the password here, and the change fails because the password is too simple. There are two alternative solutions:

Method 1: set the password to be more complex (this is the most direct way)

Method 2: turn off mysql password strength authentication (validate_password)

Edit the configuration file: vim / etc/my.cnf, add the line validate_password=off

Restart the mysql service after editing: systemctl restart mysqld

If you change the database port

Vim / etc/my.cnf add line prot=3306

Restart the mysql service after editing: systemctl restart mysqld

J) set mysql to be accessible remotely:

Log in to the MySQL:mysql-uroot-p password

Add a user to give access: grant all privileges on permission group. Permission to 'root'@'ip address' identified by 'password' with grant option; / / change ip to%%, indicating that all

Refresh permissions: flush privileges; ­

These are all the relevant knowledge points of this introduction. Thank you for your study and support.