insert into user(host, user, password) values("%", "root", password("yourpassword"))
grant all privileges on portal to 'web_db'@'%' with grant option; // assign permissions
revoke all privileges on *.* from 'web_db'@'%' with grant option; // revoke authorization
revoke all on *.* from 'web_db'@'%';
flush privileges; // refresh privileges
bind-address = 0.0.0.0 // allow connections from any IP
bind-address = 127.0.0.1 // only allow local connections
protected-mode no redis protected mode, prohibit remote connection, open yes no close