14.1. Managing OS Templates in Group Context

Virtuozzo Automator allows you to list OS templates installed on the physical servers registered in Virtuozzo Automator. They may be already used or not used by certain virtual environments. All OS templates installed on the physical servers are listed on the OS Templates page in the following table:

Column Description
Name The name of the OS template.
Type Denotes if it is an EZ template. EZ templates have only information about the necessary packages, and the packages themselves are downloaded from a central repository. EZ templates don’t have versions and thus cannot be updated.
Description The description of the OS template.
OS The operating system the template is intended for.
Architecture The microprocessor architecture.

To show or hide columns, click Select Columns and set or clear the respective checkboxes.

By default, 20 templates are displayed on a page. To change the number of templates shown per page, click the appropriate link below the table. You can also filter the templates shown in the OS Templates table. To do that, click Show Search, enter search patterns in the search fields, and click Search. To change what search fields are displayed, click Customize. To view all OS templates residing on your physical servers, click Reset Results.

With the help of the Virtuozzo Automator toolbar you can perform the following operations on OS templates:

  • Upload a new template that you have locally and install it on a physical server registered in Virtuozzo Automator (the New App/OS Template button).

  • Select some templates in the table and install them on one or more Virtuozzo Automator physical servers at once (the Install to HNs button).

  • Delete those OS templates that are not needed any more. To this effect, select the check boxes opposite the OS templates you wish to delete and click the Uninstall from HNs button.

    Note

    If any virtual environment on your physical servers is based on the OS template you wish to delete, the OS template deletion will fail.

Clicking an OS template name opens the screen where you can cache the template packages and view detailed information on them (see Viewing OS Template Properties in Group Context).

14.1.1. Viewing OS Template Properties in Group Context

The description of the selected OS template is given at the top of the page, after which the Summary section provides additional details on the template:

Field Description
Type Denotes if it is an EZ Virtuozzo template. EZ templates have only information about the necessary packages, and the packages themselves are downloaded from a central repository. EZ templates do not have versions.
Architecture The microprocessor architecture.
Platform Denotes the operating system the template is intended for.
Supported technologies Lists the technologies that the physical server must support for the template to work correctly.

The Installed on HNs section enumerates those physical servers where the given template has been installed. You have the possibility to select any number of physical servers in the table and either cache the given template on these physical servers (the Cache Template button) or uninstall it from them (the Uninstall Template button).

If you are going to cache the template, remember that, first, packages “included” in an EZ template are, actually, meta data pointing to what real packages and from what repository can be downloaded to the physical server to make the template work. Second, to be used for creating virtual environments on its basis, any OS template has to be cached. Caching an OS template is preparing it for creating virtual environments on its basis. When you cache an OS template, you:

  1. Download the packages its meta data refer to from the download repository to your physical server.
  2. Install them on the physical server.
  3. Compress them into a gzipped archive for further usage.

If the template has already been cached, clicking the Cache Template icon launches updating the cached templates.

If, before doing anything, you want to see what packages the OS template includes, open the Packages tab.