Linux Server Migration Specialist - 3

Introduction: We have a server for an online education business in Korea. This is a very old server that we’ve used for over 10 years. The SW and DB are very old and big too. Before this old server stops, we would like to migrate to AWS. Our Chinese Engineer tried to do it himself but failed. Below is a rough description of what he did and why he could not finish it. I would like to get help from someone who can migrate this to a new AWS server. The server is an online one and we need to do the server to be migrated during the weekend in Korean Standard Time Zone. What our engineer tried- (Rough translation from Chinese): I applied for EC2 server in AWS and carried out server migration, The configuration of AWS server is CentOS 7, apache2 + PHP6 + MySQL, Because the capacity of files and databases is relatively large, it takes about 5 days to migrate files and databases. However, after the migration is successful, due to the different configurations of the original server and the new AWS server, When opening the web page, errors occur due to some PHP commands or incorrect MySQL database format, The normal work was delayed due to system errors, and the migration work was terminated. Personally, I think the OS, PHP, MySQL and other environments of the new server to be migrated must be consistent with the original server. Otherwise, an error will occur during system operation, which will lead to failure to work normally on the new server. I migrated the web page code with the FTP tool, Mysql database is migrated through the data transmission method of Navicat premium tool. About the source Server: Server CPU : Intel(R) Xeon(R) CPU E3-1220 V2 @ 3.10GHz Server Memory : 4GB Server HardDisk ： 450GB Server OS : CentOS release 6.10 (Final) Apache: Apache/2.2.15 (Unix) Apache folder：home/awebser/server/httpd-2.2.22 PHP : PHP 5.6.19 (cli) (built: Sep 6 2020 13:19:37) MySQL : Ver 14.14 Distrib 5.1.63 MySQL DB Size: 30GB Web Source Folder: /home/awebser/www/NewUrichina/ Web Source Size: 290GB