Install How to migrate from shared host to centmin mod?

If shared hosting is on cpanel/whm then yes Insight Guide - How To Transfer cPanel/WHM Sites To Centmin Mod LEMP Servers is the correct guide.

• You won't have cpanel/whm root user access on shared hosting so some of the steps aren't possible.
• I'd do a test run/migration so keep live shared hosting account untouched and just get a cpanel/WHM full site backup from your provider to transfer to Centmin Mod server for test extraction/migration - you essentially skip to this step of using full cpanel backup at Upgrade - Nginx - Redis - Insight Guide - How To Transfer cPanel/WHM Sites To Centmin Mod LEMP Servers. Do not update domain DNS yet so even if you mess up, your live shared hosting is untouched and you can retry Centmin Mod server side/reload OS etc without any fears.
• I'd read Understanding WHM/Cpanel structure though first and how it corresponds with Centmin Mod's structure at Upgrade - Nginx - Redis - Insight Guide - How To Transfer cPanel/WHM Sites To Centmin Mod LEMP Servers
• Then for cpanel/WHM backup using pkgacct at Upgrade - Nginx - Redis - Insight Guide - How To Transfer cPanel/WHM Sites To Centmin Mod LEMP Servers since you do not have server root access, you'd need to ask your web host to give you a backup of your cpanel account preferably using pkgacct which will give you the cpmove-username.tar.gz backup file which you transfer to Centmin Mod server to proceed with steps for extracting that data to the right corresponding Centmin Mod locations outlined at Upgrade - Nginx - Redis - Insight Guide - How To Transfer cPanel/WHM Sites To Centmin Mod LEMP Servers just for step 2 you might not want to restore mysql username/passwords but create them new using mysqladmin_shell.sh
• This isn't only way you can migrate, essentially you just want to move whm/cpanel public_html web root files to Centmin Mod public web root and backup and restart mysql databases (understanding cpanel/WHM vs Centmin Mod structures).