1. 配置X86架构ESC

2. 查看本系统中有没有安装mariadb相关的组件，有则卸载

查找是否安装mariadb组件
rpm -qa | grep mariadb

删除组件
rpm -e mariadb-libs –nodeps

再次查看
rpm -qa | grep mariadb

3. 安装mysql

mysql安装包链接:link

将mysql相关的安装包，上传到华为云的ECS中(这里用的是WinSCP远程传输)

创建存储配置文件的目录
mkdir /usr/local/mysql

解压压缩包到新的目录中
tar -zxvf mysql-5.7.25-1.el7.x86_64.rpm-bundle.tar.gz -C /usr/local/mysql

按照顺序依次安装相关软件
cd   /usr/local/mysql
rpm -ivh mysql-community-common-5.7.25-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.25-1.el7.x86_64.rpm
rpm -ivh mysql-community-devel-5.7.25-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-compat-5.7.25-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.25-1.el7.x86_64.rpm
yum install net-tools
yum install libaio
rpm -ivh mysql-community-server-5.7.25-1.el7.x86_64.rpm

4. 启动mysql

查看Mysql服务状态
systemctl status mysqld

启动mysql服务
systemctl start mysqld

开机自启动 mysqld服务
Systemctl enable mysqld

5. 登录MySQL，修改密码，开放访问权限

查看临时密码
cat /var/log/mysqld.log | grep password

登录MySQL
Mysql -uroot -p’初始密码’

修改密码长度最低位数
set global validate_password_length=4;

设置密码安全等级低
set global validate_password_policy=LOW;

设置密码为root
set password = password('root');

开启访问权限
grant all on *.* to 'root'@'%' identified by 'root';
flush privileges;

测试,创建一个新的数据库
create database 数据库名;