tincker board init

first update os

sudo apt-get update

and install mysql

sudo apt-get install mysql-server

and create ssh user

adduser username 

and add sudo this user

usermod -aG sudo username 

for connect this user with ssh

Edit (as root) /etc/ssh/sshd_config. Append the following to it: 
PermitRootLogin no

and restart sshd service

systemctl restart sshd

and connect to board by ssh

create mysql user 

CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';

GRANT ALL PRIVILEGES ON * . * TO 'newuser'@'localhost';

and create database

create database <database_name> character set UTF8 collate utf8_bin

CREATE DATABASE mydatabase CHARACTER SET utf8 COLLATE utf8_general_ci;