CentOS 7.6 install MySQL 5.7 GA version

Preparing the Environment

• Uninstall mariadb

rpm -qa | grep mariadb

rpm -e --nodeps mariadb-libs-5.5.60-1.el7_5.x86_64

• Installing MySQL

  • Get yum source (MySQL official website)

    

  • Yum install source

    rpm -Uvh https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm

  • View the status of each version of the boot

    yum repolist all | grep mysql

    The latest version 8.0 is enabled by default

    

  • Disable 8.0 5.7 open

    yum-config-manager --disable mysql80-community
    yum-config-manager --enable mysql57-community

    Command yum-utils package, install either can not be found to solve the yum-config-manager command:

    yum -y install yum-utils

  • Installation mysqll

    yum -y install mysql-community-server

Configure MySQL remote connections

• Check mysql version

  mysql -V

• Start mysql && set the boot from Kai

  systemctl start mysqld
  systemctl enable mysqld

• View the default password generation

  grep 'temporary password' /var/log/mysqld.log

• Login Change Password

  mysql -uroot -p

• change Password

  ALTER USER 'root'@'localhost' IDENTIFIED BY 'NoPassword564925080!';
  
  mysql5.7默认安装了密码安全检查插件（validate_password），默认密码检查策略要求密码必须包含：大小写字母、数字和特殊符号，并且长度不能少于8位。否则会提示ERROR 1819 (HY000): Your password does not satisfy the current policy requirements错误.

• Authorized users remote login

  GRANT ALL PRIVILEGES ON *.* TO 'noneplus'@'%' IDENTIFIED BY 'Noneplus564925080!' WITH GRANT OPTION;
  
  flush privileges;

• Open Server 3306 port

• Remote Connection