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by Eichhorn, Andreas

Update KVM Windows Server with current KVM driver package (>=

Public OTC KVM Windows images published between January and April 2019 contains KVM driver package This package contains a storage driver, which does not recognize expanded disks. It is recommended updating drivers to current version (>=

by Gerlach, Bernhard

Root Cause Analysis and Improvements on OTC Outage 2019-03-30

The Open Telekom Cloud (OTC) suffered a full outage from 2019-03-30 from 12:10 CET until 2019-03-31 14:58 CEST. OTC customers were informed an hour after the event. A preliminary report was sent out in the evening of 2018-04-02. Read in this blog post a detailed analysis and a summary on the technical improvements.

by Robert Neumann

How to use Knative to deploy a Serverless Application on CCE and Kubernetes

Photo by Pixabay from Pexels

Container or Serverless? A question that will soon be superfluous with Knative. The open source project Knative was developed by Google together with Pivotal, IBM, Red Hat and SAP and offers middleware components for serverless container applications based on Kubernetes and Istio. This allows developers to focus more on writing code. Based on the Open Telekom Cloud CCE service we install Knative and show how to use it.

by Robert Neumann

Deploy a Kubernetes Cluster on OpenStack using Kubespray

Photo by Albin Berlin from Pexels

Kubernetes has quickly become the open-source standard solution for deployment, scaling and management of container applications. It offers a high degree of flexibility and versatility. But what leads to a large and powerful documentation, this can be overwhelming for one or the other, when trying to find the relevant sections for his installation. Which is why Kubernetes has a steep learning curve. After the planning of the cluster follows the installation which also has its pitfalls. For this reason, there are deployment tools such as Kubespray that make this work easier. This story is about the automatic deployment of a Kubernetes cluster, using Kubespray on an OpenStack Cloud (Open Telekom Cloud).

by Tino Schreiber

[CCE] Kubernetes vulnerability: CVE-2018-1002105

The vulnerability under the tag: CVE-2018-1002105 causes a critical security gap within the following Kubernetes versions

  • Kubernetes v1.0.x-1.9.x
  • Kubernetes v1.10.0-1.10.10 (fixed in v1.10.11)
  • Kubernetes v1.11.0-1.11.4 (fixed in v1.11.5)
  • Kubernetes v1.12.0-1.12.2

Our PaaS service Cloud Container Engine (CCE) was also affected. The platform has been patched on last Saturday (15.12.2018). Details can be found below and how clusters can be checked by yourself.