cwpsrv (webserver)
This is a web server for: cwp admin panel, cwp user panel, phpMyAdmin, roundcube
Configuration files/folders: /usr/local/cwpsrv/conf/ and /usr/local/cwpsrv/conf.d/
Reload command: service cwpsrv reload

cwp-phpfpm (php for cwpsrv)
This is php of cwpsrv for: cwp admin panel, cwp user panel, phpMyAdmin, roundcube
Configuration files/folders: /usr/local/cwp/php71/php.ini /usr/local/cwp/php71/php.d/
Reload command: service cwp-phpfpm reload

phpMyAdmin (MySQL Database manager)
php server configuration: /usr/local/cwp/php71/php.ini
script location: /usr/local/cwpsrv/var/services/pma/

RoundCube (WebMail)
php server configuration: /usr/local/cwp/php71/php.ini
script location: /usr/local/cwpsrv/var/services/roundcube/

Pure-FTP (Main FTP server)
configuration files: /etc/pure-ftpd/
Restart command: service pure-ftpd restart

Apache (main webserver)
configuration files: /usr/local/apache/conf/ and /usr/local/apache/conf.d/
Reload command: service httpd reload

Nginx (proxy webserver)
configuration files: /etc/nginx/
Reload command: service nginx reload

Varnish (cache webserver)
configuration files: /etc/varnish/
Reload command: service varnish reload

Dovecot (POP3/IMAP)
configuration files: /etc/dovecot/
Reload command: service dovecot reload

Postfix (SMTP)
configuration files: /etc/postfix/
Reload command: service postfix reload

MySQL/MariaDB
configuration files: /etc/my.cnf and in the folder /etc/my.cnf.d/
** Note that MariaDB has most of the config in file /etc/my.cnf.d/server.cnf

Restart command: service mysql restart

Bind (Named/DNS server)
configuration files: /etc/named.conf, /etc/named/, /var/named/
Reload command: service named reload