Add Ghostscript feature for users under CageFS

Issue

How can we enable the Ghostscript feature for users under CageFS? 

• WordPress Thumbnails for PDF files were not generated
• WordPress PDF will not generate thumbnail
• WordPress Ghostscript PDF thumbnails
• WordPress Ghostscript shown as not working
• WordPress Ghostscript PDF Preview

Environment

• Cloudlinux
• CageFS

Solution

Install ImageMagick and ghostscript RPM

yum install ImageMagick
yum install ghostscript

Enable Ghostscript under CageFS

cagefsctl --addrpm ghostscript 
cagefsctl --force-update
cagefsctl -M

For testing the following PHP script can be used to test Ghostscript functionality:

<?php 
$output = shell_exec('gs -v'); 
if(strpos($output, 'Ghostscript') !== false) 
{ 
  echo "Ghostscript is installed. Version details: " . $output; 
} 
else 
{ 
   echo "Ghostscript is not installed or not accessible."; 
} 
?>