A Blog of the ZHAW Zurich University of Applied Sciences
This category is a collection of technical and scientific HowTos which describe how to do something, e.g. setup a Vagrant installation etc.
How does one remove a faulty/un/re-provisioned physical machine from the list of managed physical nodes in OpenStack nova? Recently we had to remove a compute node in our cluster for management reasons (read, it went dead on us). But nova perpetually maintains the host entry hoping at some point in time, it will come back […]
The famous Nagios open source monitoring system has become a de facto standard in recent years. Unlike commercial monitoring solutions Nagios does not come as a one-size-fits-all monitoring system with thousands of monitoring agents and monitoring functions. Nagios is rather a small, lightweight monitoring system reduced to the bare essential of monitoring: an event management […]
In Mobile Cloud Networking (MCN) we rely heavily on OpenStack, OpenShift and of course Automation. So that developers can get working fast with their own local infrastructure, we’ve spent time setting up an automated workflow, using Vagrant and puppet to setup both OpenStack and OpenShift. If you want to experiment with both OpenStack and OpenShift locally, simply clone this project…
Openstack is generally well suited for typical use cases and there is hardly reasons to tinker with advance options and features available. Normally you would plan your public IP addresses usage and management well in advance, but if you are an experimental lab like ours, many a times things are handled in an ad-hoc manner. […]
While reviewing code for the KIARA project I came across a change set which read like this: – void super_duper_func () { + void super_duper_func (void) { I was puzzled, what’s the difference anyway except from making it explicitly clear that there are no parameter expected? Well, I was wrong. The ISO 9899 standard (read: […]
While we have lots of experience working with cloud automation tools, for OpenStack in particular, it has taken us a little while to get around to checking out Fuel from Mirantis. Here, we give a short summary of our initial impressions of this very interesting tool. Schlagwörter: deployment, Mirantis Fuel
A word of warning at the beginning: This post is about C++ and not about C! So whatever you read here may not necessarily apply to C. Nevertheless you may have a look Sugih’s page which features are in C. Besides I’m not going to explain what references and pointers are. Introduction While working on […]
This blog post describes the installation of OpenStack Grizzly with help of the Stackforge Puppet-Modules on CentOS 6.4 – with the use of network namespaces. The setup consists of a controller/network and a compute node. Of course additional compute nodes can later be added as needed.
Why is service quality important? A cloud can be seen as a service which is provided by a cloud provider and consumed by an end user. The cloud provider has the goal to maximize profit by providing cloud services to end users. Usually there are no fixed prices for using cloud services: users have to […]
Preface OpenStack is a cloud computing project to provide an infrastructure as a service (IaaS). It is free open source software released under the terms of the Apache License. The project is managed by the OpenStack Foundation, a non-profit corporate entity established in September 2012 to promote OpenStack software and its community. More than 200 companies […]