1. 下载mysql安装包
在官网下载
https://dev.mysql.com/downloads/mysql/5.7.html#downloads
下载
mysql安装包
2.若系统安装了mariadb，请先卸载
(1) 查看mariadb
rpm -qa|grep mariadb
(2) 卸载mariadb
rpm -e --nodeps mariadb-libs-xxx
3.安装mysql
tar -xvf mysql-5.7.29-1.el7.x86_64.rpm-bundle.tar
rpm -ivh mysql-community-common-5.7.29-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.29-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.29-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-5.7.29-1.el7.x86_64.rpm
4.配置mysql
vim /etc/my.cnf
增加
[mysqld]
#skip-grant-tables //忽略密码验证
lower_case_table_names=1 //忽略大小写
character_set_server=utf8
init_connect='SET NAMES utf8'
5.启动mysql
service mysqld start
6.设置一个密码
mysql
mysql> update mysql.user set authentication_string=password('123456') where user='root';
mysql> flush privileges;
退出重启服务器，再次登录
mysql -uroot -p123456
如果输入命令出错，再重设密码
mysql> set password=password('123456');
如果不行
mysql> ALTER USER USER() IDENTIFIED BY '123456';
若提示太过于简单
mysql> set global validate_password_policy=LOW;
mysql> set global validate_password_length=6;
再重试
7.开启远程连接
mysql> update `user` set `host` = '%' where `user` = 'root';
mysql> flush privileges;
