I have bought new server for SEDC kelantan and i have stuck when i install Debian 4.0 than i install ubuntu 8.04 LTS server editions.
After googling around i not found the best tutorial how to install Plesk on ubuntu 8.04 hardy.
than this is the basic tutorial and it will help you and me.
switch the AppArmor service off, before installing Parallels Plesk Panel
#/etc/init.d/apparmor stop
and remove it from start-up list
#update-rc.d -f apparmor remove
Download the latest version of Parallels Products Installer
# wget http://download1.parallels.com/Plesk/PPP9/Ubuntu8.04/parallels_installer_v3.5.0_build090817.16_os_Ubuntu_8.04_i386
# wget http://download1.parallels.com/Plesk/PPP9/Ubuntu8.04/psa_9.2.3-ubuntu8.04.build93091016.15_i386.deb.tar.gz
# chmod +x parallels_installer_v3.5.0_build090817.16_os_Ubuntu_8.04_i386
Run the following command bef ore install
#export LANG=C
#export LANG_ALL=C
Run Parallels Products Installer
if you wanna install using web run this command
# ./ parallels_installer_v3.5.0_build090817.16_os_Ubuntu_8.04_i386 –web-interface
Open your browser and enter https://hostname:8447/ or https://IP-address:8447/
Log in as root.
To install Parallels Plesk Panel through the command line interface
# ./ parallels_installer_v3.5.0_build090817.16_os_Ubuntu_8.04_i386
Follow the instructions presented on the screen to complete the installation
When the installation is finished, Parallels Plesk Panel will start automatically.
login to Parallels Plesk Panel on your host at
https://domain.name:8443/ or https://IP-address:8443/
The default username is “admin” and the default password is “setup“
Lastly insert this repo
deb http://autoinstall.plesk.com/ubuntu/PSA_9.2.3 hardy all
http://wiki.koshatul.com/Ubuntu_Plesk_Install
http://www.parallels.com/eu/download/plesk9/#ubuntu