Service Interruption on OTC

Executive Summary

The Open Telekom Cloud (OTC) will undergo major changes in December.

During this time, the Management/Control Plane (Web Interface and API) will be unavailable several times for a number of minutes. The User/Data Plane (Virtual Resources) will be unreachable for a few minutes as well. In addition, due to the nature of the changes, the Virtual Machines (ECS) will not be live-migrated during this round of updates; instead all VMs will be terminated and restarted a few minutes later (cold migration). The User Plane changes will be performed in AZ1 (eu-de-01) before changes are started in AZ2 (eu-de-02), so cloud native applications should not see a service disruption.