https://albazy.com/2009/08/%d9%85%d9%86-%d8%a7%d8%b3%d8%a8%d8%a7%d8%a8-%d8%aa%d9%88%d9%82%d9%81-mysql-server-%d8%b9%d9%86-%d8%a7%d9%84%d8%b9%d9%85%d9%84/