install mysql in centos and change passoword

Posted 2020-11-08 otfsenter

Install mysql

Installing MySQL

• wget https://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm
• md5sum mysql57-community-release-el7-9.noarch.rpm
• rpm -ivh mysql57-community-release-el7-9.noarch.rpm
• yum install mysql-server

Starting MySQL

• systemctl start mysqld
• systemctl status mysqld

• grep ‘temporary password‘ /var/log/mysqld.log

  2016-12-01T00:22:31.416107Z 1 [Note] A temporary password is generated for [email protected]: mqRfBU_3Xk>r

Change password

• stop mysqld

  ps -ef|grep -i mysql
  systemctl stop mysqld

• edit /etc/my.conf

vim /etc/my.cnf

[mysqld]
skip-grant-tables

• change password

  # mysql -u root
  mysql> use mysql;
  mysql> update mysql.user set authentication_string=password(‘123‘) where user=‘root‘;
  mysql> flush privileges;
  mysql> exit

• comment skip-grant-tables in /etc/my.cnf

• restart mysql

  systemctl stop mysqld
  systemctl start mysqld