Open Telekom Cloud for Business Customers

Open Telekom Cloud – Available Images, Naming Conventions, Planned Roadmap

This is the fourth post of the Open Telekom Cloud Image Factory series. We have started with two posts giving you an introduction about the Open Telekom Cloud Image Factory:

Open Telekom Cloud Image Factory - Introduction
Open Telekom Cloud Image Factory - get in touch with an Open Telekom image

With the latest post you got detailed insights about the changes and modifications we have done to make the image secure and well-working on the Open Telekom Cloud platform.
Today we would like to inform you about the currently available images, their naming conventions and the planned roadmap.

List of Images

At the time of writing, public images are available for openSUSE, SuSE Linux Enterprise Server (SLES), CentOS, Oracle Enterprise Linux (OEL), Ubuntu and Windows.
There are three ways to list the current available images:

  • Go to the Open Telekom Cloud dashboard and click on "Image Mgmt Service"
  • Use the Openstack CLI command: "glance image-list"
  • Or use the Open Telekom Cloud tool https://github.com/OpenTelekomCloud/: "Open Telekom Cloud images list"
  • You will get a list of images then - if you wonder about the image naming, continue reading with the next sections ...

Class of Images

We have currently defined three classes of images: Community, Standard and Enterprise.
This should help you to easily identify by the image name, where the image comes from and if it is free of charge or not.

  • Community: 
    These are freeware images without any modifications. As-is images as they come from a vendor or the internet. 
    Example: Community_Ubuntu_14.04.4_TSI_20160516_0
  • Standard:
    Self-managed freeware images created by the Image Factory.
    Example: Standard_openSUSE_42.1_JeOS_102_20160607_0

  • Enterprise:
    Self-managed images of enterprise distributions created by the Image Factory.
    Example: Enterprise_SLES12_SP1_100_20160607_0

What's in a Name?

We have tried to put all relevant information about the image into its name. Here are the naming conventions we have used:
Type_Distribution_Major/minor_Architecture_Feature_Template version_internal version

Type: Community, Standard or Enterprise
Distribution: Windows, openSUSE, ...
Major/Minor: version from the vendor
Architecture (optional): e.g. x86_64
Featurename (optional): Placeholder for describing a special image, e.g. docker, sap, …
Template Version: version of the kiwi image template file
Internal Version: Date of the build + sequential number

Regular Image Build

New images for Linux and Windows Enterprise and Linux Standard images every month (usually at the 14th) including the latest patches.

  • The new image name contains the build date.
  • The previous image will not be deleted but made invisible.
  • Old images will be deleted after 2 years.

Latest Image for Linux:

  • There will be always an image with the name _latest.
  • This image will be updated as often as necessary (e.g. weekly).
  • It includes the latest or emergency bug/security fixes
  • Will be replaced as soon as a new image is available.

Planned Roadmap

We plan to bring some new distros to the Open Telekom Cloud as well as some updates to existing ones.
The Ubuntu image is currently a basic image from Canonical without any modifications. The next version of the Ubuntu image will contain for instance the uvp-monitor, a linux standard user and same hardening as for the other Linux distros.

For Windows we will bring new images including cloudbase-init. Cloudbase-init is the equivalent of the cloud-init project used in our Linux images. In the first step the hostname, password and custom data will be injected using cloudbase-init.
And we also want to bring some new distros to Open Telekom Cloud. In preparation are Debian and RedHat Enterprise Server (RHEL); most likely these images will be published with the next Open Telekom Cloud release.
Furthermore, we have Fedora and CoreOS on our list.

What's Next

We will continue blogging :-) In the next weeks you will find some posts about ...

  • Creating Private Images
  • Migrate ECS2 from AWS into Open Telekom Cloud (the image way)
  • Windows Images @ Open Telekom Cloud

For questions or feedback, please contact us: otc-imagefactory(at)t-systems.com


Daniela Ebert Daniela Ebert spent many years as an AIX Engineer in the Solution Delivery department at T-Systems. Leading up to the launch of Open Telekom Could at CeBIT 2016, she developed the technical implementation of the platform. At the moment her work is concentrated on technical development, the evaluation of technical features, and architecture issues.

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