A Blog of the ZHAW Zurich University of Applied Sciences
The second robotics and ROS meetup in Zürich was organized by ICCLab and hosted by Dr. Romana Rust and Gonzalo Casas from Gramazio Kohler Research, ETH Zürich, on May 14th 2019. There was a good turnout from representatives in both academia and industry, totaling about 45 people in attendance. For this second meetup we had […]
Vienna, the second-largest city in the German-speaking world, had become a meeting place earlier this week for software and service engineers who explore the crossroads of software architecture, DevOps processes and continuous-* (software development, integration, delivery) approaches. The 1st Vienna Software Seminar had mixed business and academic participants and has been of particular interest to […]
Service scheduling and task placement within large-scale clusters is receiving a lot of interest in the cloud community at present. Moreover, service scheduling is one of the keystones of our recently kicked off ACeN project and we finally got a chance to experiment with the technology that is currently a frontrunner in this area – […]
In the previous article we defined use cases for an OpenStack implementation according to the usage scenario in which the OpenStack environment is deployed. In this part of the Dependability Modeling article series we will show how these use cases relate to functions and services provided by the OpenStack environment and create a set of dependabilities between use cases, functions, services and system components. From this set we will draw the dependency graph and make the impact of component outages computable.
In a former article we spoke about testing High Availability in OpenStack with the Chaos Monkey. While the Chaos Monkey is a great tool to test what happens if some system components fail, it does not reveal anything about the general strengths and weaknesses of different system architectures. In order to determine if an architecture with 2 redundant controller nodes and 2 compute nodes offers a higher availability level than an architecture with 3 compute nodes and only 1 controller node, a framework for testing different architectures is required. The “Dependability Modeling Framework” seems to be a great opportunity to evaluate different system architectures on their ability to achieve availability levels required by end users.
On the 19th February the 2nd Swiss OpenStack User Group Meeting took place. One of the presentations was held on Ceilometer by Toni and Lucas from the ICCLab. They talked about the history, the current and future features, the architecture and the requirements of ceilometer and explained how to use and extend it. You can […]