Brand Claim Brand Claim
by Kurt Garloff <kurt.garloff@t-systems.com>

Relocating VMs from one pool to another in OTC

Scope

When you need to scale vertically, i.e. change the available vCPUs or RAM assigned to a VM in OTC, you can use the resize (change specifications) feature and change the flavor of an existing VM. You can do this via the web interface or the API -- when you then restart the VM, it will come up with the new flavor type.

by Daniela Ebert & Kurt Garloff

Proposal for new Linux image registration policies

Executive Summary

Currently, for each Linux image, there are two series of images, one with a datestamp (e,g, _20180106_0) and one with a _latest name which gets renamed to _prevN and hidden upon a new _latest image registration. We have followed a roughly monthly update schedule (aligning with the Windows world) for the datestamp images and the _latest images while pushing out additional _latest images in between occasionally based on major improvements, bug fixes or security issues.

by Kurt Garloff <kurt.garloff@t-systems.com>

Root Cause Analysis and Improvements on OTC Network Outage 2017-11-08

About this document

The Open Telekom Cloud(OTC) had a broad network outage on 2017-11-08 from 13:44 CET until 14:41 CET. The OTC customers were informed about it an hour after the event and some details on what exactly happened were sent out in the morning of 2017-11-10.

by Kurt Garloff

Guide for using SNAT on OTC

Overview

The Open Telekom Cloud_ (OTC) allows customers to associate elastic IPs (floating IPs) with vNICs (ports) on Virtual Machines (VMs) to expose them to the internet and support in- and outgoing connections.

by Kurt Garloff

Guide for OTC PreProduction access and usage

Overview

The Open Telekom Cloud (OTC) consists of several environments; the environment that customers normally get to see is the production environment. There is also a staging environment that can be divided into several compartments and is used to test and validate fixes; it is commonly referred to as PreProduction environment, or short PreProd.