Centos7快速安装Mysql

运行以下命令

wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm;
yum -y install mysql57-community-release-el7-10.noarch.rpm;
yum -y install mysql-community-server;
systemctl start mysqld.service;
yum -y remove mysql57-community-release-el7-10.noarch;
grep "password" /var/log/mysqld.log;

会生成一个root用户的随机密码

运行命令： mysql -u root -p;

输入红色框内的随机密码

连接上mysql, 进入sql命令行书写模式，设置密码策略, 修改密码安全等级

set global validate_password_policy=0;

set global validate_password_length=3;
set global validate_password_mixed_case_count=0;
set global validate_password_special_char_count=0;
set global validate_password_number_count=0;

将随机密码修改成自己定义的密码

ALTER USER 'root'@'localhost' IDENTIFIED BY '你想设置的密码';
quit;

设置数据库编码

停止mysql服务：systemctl stop mysqld;

修改数据库配置文件 /etc/my.cnf

赋文件权限：chmod 777 /etc/my.cnf

[mysqld]
character-set-server=utf8
max_allowed_packet=20M
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
[client]
default-character-set=utf8
[mysql]
default-character-set=utf8

启动mysql服务：systemctl start mysqld;

设置允许远程主机连接

mysql -uroot -p密码;
use mysql;
update user set host = '%' where user = 'root';
quit;
systemctl restart mysqld;

 完成！