Entries by Boris Stoyanov

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Troubleshooting CloudStack Virtual Routers

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 […]

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How to deploy templates without using secondary storage on KVM

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 […]

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Layer 2 Networks in CloudStack

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 […]