Cloudstack’s multi-tenant virtualised networking model is one of its strongest features. Abstracting complex networking concepts and allowing simple UI/API configuration of networks is something loved by users of Cloudstack clouds. But, as an operator/administrator of a Cloudstack cloud you’ll almost certainly have had to troubleshoot network problems – and that means troubleshooting CloudStack’s Virtual Routers […]
Integration testing – What it is and why SDLC needs it. What is Integration testing? This is a type of testing where multiple components are combined and tested working together. There are different aspects of integration testing depending on the project and component scale, but usually it comes down to validating that different modules can […]
Introduction ShapeBlue have been working on a new feature for Apache Cloudstack 4.11.1 that will allow users to bypass secondary storage with KVM. The feature introduces a new way to use templates and ISOs, allowing administrators to use them without being cached on secondary storage. Using this approach Cloudstack administrators will not have to worry […]
Layer 2 (also known as the Data Link Layer) is the second in the seven-layer OSI reference model for network protocol design, and is equivalent to the link layer (the lowest layer) in the TCP/IP network model. Layer 2 is the network layer used to transfer data between adjacent network nodes in a wide area […]
Intro What is HA? “High availability is a characteristic of a system, which aims to ensure an agreed level of operational performance, usually uptime, for a higher than normal period. ” — Wikipedia HA in CloudStack is currently supported for VMs only. In order to have it enabled, the service offering of the VM should […]
