Templates

A template (or a package set) in Parallels Server Bare Metal is a set of original application files repackaged for mounting over Virtuozzo File System. Usually it is just a set of RPM packages for Red Hat like systems. Parallels Server Bare Metal provides tools for creating templates, installing, upgrading, adding them to and removing them from a Container. Using templates lets you:

• share the RAM among similar applications running in different Containers to save hundreds of megabytes of memory
• share the files comprising a template among different Containers to save gigabytes of disk space
• deploy applications simultaneously in many Containers
• use different versions of an application on different Containers (for example, perform an upgrade only in certain Containers)

There are two types of templates: OS templates and application templates. An OS template is an operating system and the standard set of applications to be found right after the installation. Parallels Server Bare Metal uses OS templates to create new Containers with a preinstalled operating system. An application template is a set of repackaged software packages optionally accompanied with configuration scripts. Application templates are used to add extra software to existing Containers. For example, you can create a Container on the basis of the redhat OS template and add the MySQL application to it with the help of the mysql template.

For detailed information on Parallels templates, see the Parallels Server Bare Metal Templates Management Guide .