Some times the option to enable Perl , Python , Fastcgi Option wont be visible under
Plesk Panel-->Websites & Domains-->"Under domain" Hosting Settings.The reason for this issue is Plesk runs in VPS Optimized mode.Check the status by
[root@centos06plesk ~]# /usr/local/psa/bin/vps_optimized --status
VPS Optimized mysql-innodb: on
VPS Optimized apache-modules-all: off
VPS Optimized apache-modules-except-php: off
VPS Optimized apache-modules-except-scripting: off
To make this options visible and enable switch Plesk Panel back to normal operation mode by the following steps.
1.ssh to server as root
2.mysql -uadmin -p`cat /etc/psa/.psa.shadow`psa -e "update misc set val='0' where param='vps_optimized_mode_status';"
Thank you
Sajay S