1、依赖安装

[root@localhost ~]# yum -y install numactl perl autoconf libaio

2、检查MySQL及相关RPM包，是否安装，如果有安装，则移除（rpm –e 名称）

## centos7主要检查maridb
[root@localhost ~]# rpm -qa | grep mariadb
mariadb-libs-5.5.52-1.el7.x86_64
[root@localhost ~]# yum -y remove mariadb*

## centos6检查情况
[root@bigdata-05 ~]# rpm -qa | grep -i mysql
mysql-libs-5.1.71-1.el6.x86_64
[root@bigdata-05 ~]# yum -y remove mysql-libs*

3、下载Linux对应的RPM包，如：CentOS6.4_64对应的RPM包，如下：

[root@bigdata-05 ~]# wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.32-1.el7.x86_64.rpm-bundle.tar

4、安装

[root@bigdata-05 ~]# rpm -ivh mysql-community-common-5.7.32-1.el7.x86_64.rpm
[root@bigdata-05 ~]# rpm -ivh mysql-community-libs-5.7.32-1.el7.x86_64.rpm
[root@bigdata-05 ~]# rpm -ivh mysql-community-server-5.7.32-1.el7.x86_64.rpm
[root@bigdata-05 ~]# rpm -ivh mysql-community-client-5.7.32-1.el7.x86_64.rpm

5、启动服务

[root@localhost ~]# systemctl start mysqld.service

6、找到登录密码

[root@localhost ~]# grep 'temporary password' /var/log/mysqld.log
2020-11-11T12:34:21.064104Z 1 [Note] A temporary password is generated for root@localhost: T,RJgf,6k.cf

7、登录

[root@localhost ~]# mysql -uroot -pT,RJgf,6k.cf

8、修改密码

mysql> set global validate_password_policy=0;
mysql> set global validate_password_length=1;
mysql> set password for root@localhost=password('root');

9、授权

mysql> grant all privileges on *.* to root@'%' identified by 'root';
mysql> flush privileges;
mysql> show grants;

配置文件

[mysqld]
port=3306
basedir=/usr/local/mysql
datadir=/mysql/data
socket=/tmp/mysql.sock
character_set_server=utf8
collation-server=utf8_general_ci
symbolic-links=0
log-error=/var/log/mysql/mysqld.log
pid-file=/var/run/mysql/mysqld.pid
[mysql]
default-character-set=utf8
[client]
default-character-set=utf8