Install From Virtualmin to CentminMod

Centmin Mod isn't made for shared hosting, see FAQ item 2 so you won't have individual jailed and isolated linux user accounts on Centmin Mod. Centmin Mod uses pure-ftpd virtual ftp users with explicit FTP over TLS/SSL for encryption. See details here. So these are probably the biggest factor in your decision to migrating

Performance wise, I am confident no other LEMP web stack has the out of box or potential (via optional settings) performance for Nginx, php-fpm and MariaDB MySQL server as Centmin Mod particularly 123.09beta01 branch auto optimises and tunes all Nginx, php-fpm, MariaDB and linux system specific settings based on auto detected server hardware available like number of cpu cores/threads, available memory and disk i/o performance measured. Nginx and PHP-FPM also are optimised at compile time for Intel specific processors if Centmin Mod detects specific Intel cpus.

Optional items like PHP 7 boosted performance via Intel provided Profile Guided Optimization profiles as well Added Profile Guided Optimizations To Boost PHP 7 Performance | Centmin Mod Community

Centmin Mod can't do multiple PHP versions either for different vhosts though it's on the future to do list.

Centmin Mod has it's own beta tested addons/phpmyadmin.sh installer too Addon phpmyadmin.sh - CentminMod.com LEMP Nginx web stack for CentOS and discussion thread at phpmyadmin.sh Addon | Centmin Mod Community

 

not right now. Premium members have access to dbbackup.sh for mysql automated backups MariaDB - dbbackup.sh - quick mysql database backups for Centmin Mod stack | Centmin Mod Community and future plans to extend that to cmbackup.sh script for site files + db backups. So for now you have to come up with your own backup scripts and Config files page might be useful for overview of file and directory structure Centmin Mod Configuration Files - CentminMod.com LEMP Nginx web stack for CentOS

dbbackup.sh

with key features

Yes as with most free LEMP stack set ups out of the box defaults. For my own sites, I generally divide them to their own separate VPS/servers for ease of management i.e. specific php versions required and easier to scale, move or migrate a site if traffic increases etc. So not to have all the eggs in one basket

FAQ item 2 covers users accounts you can't lock site accounts down to user level like cpanel/WHM as there is no 100% user isolation between site accounts on Centmin Mod.

Pure-ftpd virtual ftp users only isolates ftp Pure-FTPD Virtual FTP Users but isn't fully jailed like cpanel/WHM as Centmin Mod is not made or setup for shared hosting like cpanel/WHM but more for usage by trusted user (myself/yourself).

Work is/has been done on jailed individual users for each nginx vhost but no way ready yet see Previews - Jailed / chrooted SFTP & SSH user Nginx vhost menu | Centmin Mod Community

you can figure that out via ssh command line anyway via nginx and php-fpm logs etc

To troubleshoot Nginx and PHP-FPM issues you'd want to check the domain site's vhost access.log and error.log logs located within directory at /home/nginx/domains/yourdomain.com/logs. You can see a full overview at centminmod.com/configfiles.html

FAQ item 19 has more info on all Centmin Mod relevant log files locations and how to use tail command to view a sample of the entries.

Tools and commands you will want to read up on and learn for basic system admin tasks and troubleshooting.

• 20 Command Line Tools to Monitor Linux Performance
• 13 Linux Performance Monitoring Tools - Part 2
• 80 Linux Monitoring Tools for SysAdmins - Server Density Blog
• Amazing ! 25 Linux Performance Monitoring Tools
• 20 Linux System Monitoring Tools Every SysAdmin Should Know
• My mysqlmymonlite.sh script can help with that mysqlmymonlite.sh Addon | Centmin Mod Community README text file has instructions for setting up a cronjob to email you reports i.e. every 10/15min or every hour.

Notes:

• Centmin Mod already installed Glances tool. It can be invoked from SSH command glances or top2. Official Glances site at nicolargo.github.io/glances/ and documentation here.