MYSQL
Windows:mysql -h IP -P 3306 -u root -p //隐藏密码登陆
查看IP地址:select SUBSTRING_INDEX(host,':',1) as ip , count(*) from information_schema.processlist group by ip;
查看端口:show variables like 'port' ;
查看属性:show variables;
开启防火墙:ufw enable
①查看防火墙状态:ufw status
查看用户权限:SELECT user,host FROM mysql.user;
远程连接MYSQL:
② mysql -uroot -p (进入数据库)
③ use mysql (使用数据库配置)
④ update user set host = '%' where user = 'root';
⑤ FLUSH PRIVILEGES; ## 刷新服务配置项
⑥ ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '666666';
⑦ vim /etc/mysql/mysql.conf.d/mysqld.cnf(注释吊仅限本机访问的权限地址)
⑧ ufw allow 3306 (打开防火墙添加访问端口)
⑨ ufw status(查看防火墙的端口)
/etc/init.d/mysql stop(停止数据库)
/etc/init.d/mysql start(启动数据库)