参考:
https://blog.youkuaiyun.com/weixin_38287709/article/details/80404648
https://blog.youkuaiyun.com/error395/article/details/79820499
1.创建一个文件夹:mkdir /usr/local/mysql
2.进入文件夹 cd /usr/local/mysql
2.1 下载RPM:wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm
3.安装源:yum localinstall mysql57-community-release-el7-11.noarch.rpm
4.安装mysql:yum install mysql-community-server
5.启动服务:systemctl start mysqld
6.开机启动:systemctl enable mysqld; systemctl daemon-reload;
7.查看临时密码:grep ‘temporary password’ /var/log/mysqld.log;
8.输入密码:mysql -u root -p
9.修改密码:mysql> ALTER USER ‘root’@‘localhost’ IDENTIFIED BY ‘新密码’;
注意:5.7版本密码至少要包含大小写字母,数字,特殊符号例如‘_’
远程连接:(慎用)
10.开启远程访问:mysql> GRANT ALL PRIVILEGES ON . TO ‘root’@’%'IDENTIFIED BY ‘自己设置一个密码’;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
11.注意:阿里云的服务器不用管防火墙的,因为它默认是关闭的,起到防火墙作用的是安全组,因此,需要登录阿里云到控制台到安全组添加一条策略来开放3306端口。