Following is the location of the different configuration files in plesk:
Apache configuration and log files locations
Main apache configuration files
/etc/httpd/conf/httpd.conf
Users apache configuration files
/etc/httpd/conf.d/*_psa_httpd.conf
Users apache configuration files
Include /home/httpd/vhosts/<domainname>/conf/httpd.include
Apache’s log file is located in
/var/log/httpd/error_log
Apache include files directory
/etc/httpd/conf.d/
Apache binary file
/usr/sbin/httpd
Qmail configuration and log files locations
qmail directory
/var/qmail
Location of qmail maildirs
/var/qmail/mailnames/
Log file location
/usr/local/psa/var/log/maillog
Binary directory
/var/qmail/bin/
My Sql configuration file and log location
location of mysql
/var/lib/mysql
Configuration File
/etc/my.cnf
Log file
/var/log/mysqld.log
Binary file
/usr/bin/mysql
BIND configuration file
Configuration File
/var/named/run-root/etc/named.conf
Zone file location
/var/named/run-root/var/<domain>
Plesk configuration files
Plesk admin password
/etc/psa/.psa.shadow
Plesk configuration file
/etc/psa/psa.conf
Plesk directory
/usr/local/psa
Directory for the config file is
/usr/local/psa/etc
postgresql directory
/var/lib/pgsql/data
FTP configuration files and logs
FTP configuration file
/etc/proftpd.conf
FTP log file
/usr/local/psa/var/log/xferlog
FTP bianry file
/usr/bin/ftp
Awstatics configurtion files and logs
Configuration file location
/etc/awstats/awstats.com
Log file are located in
/var/log/httpd/access_log
Domains access logs
/home/httpd/vhosts/<domain name>/statistics/logs/access_log