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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 Ku...

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 overwhelm...

by Tino Schreiber

[CCE] Kubernetes vulnerability: CVE-2018-1002105

kubernetes.io https://de.wikipedia.org/wiki/Datei:Achtung.png

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.

by Kristian Kucerak

Deploy Kubernetes Cluster via Kubespray with Kata Container support on OTC

Kata Containers clearlinux.org

The following guide will help you to install a 2-node Kubernetes cluster with Kubespray and providing Kata Container support. The cluster will consist of one master server which will be built on ECS (Elastic Cloud Server) and one node which will be built on BMS (Bare Metal Server). BMS is being used due to a current limitation of ECS on OTC, the ECS does not support nested virtualization which would be required for Kata runtime.