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Data centre networking: what is OVS?

In one of our preceding blogs, we spoke about Software-Defined Networking (SDN) and the key drivers behind it. Virtualisation is one of the fundamental aspects that characterises SDN, and has influenced the architecture of network switching in the data centre. OVS (Open vSwitch) is a fundamental component of modern and open data centre SDNs, where it aggregates all the virtual machines at the server hypervisor layer.

Embedded systems: the advent of the Internet of Things - Part II

This is the second part of the two-part blog series covering embedded Linux systems and the challenges brought about by the proliferation of Internet of Things (IoT) devices. In Part I, we surveyed the embedded ecosystem and the role Linux plays within that space. This blog takes you on the next step in the journey, where we explore the most demanding challenges facing manufacturers of tightly embedded IoT devices.

Canonical Achieves AWS Graviton Ready Designation

29 November 2021: Canonical, Publisher of Ubuntu, announced today that it has achieved the AWS Graviton Ready designation, part of the Amazon Web Services, Inc. (AWS) Service Ready Program. This designation recognizes that Canonical + Ubuntu Server and Anbox Cloud Appliance has demonstrated successful integration with AWS Graviton Service.

What is embedded Linux? Part I

“Hello everybody out there using minix – I’m doing a (free) operating system (just a hobby, won’t be big and professional like gnu) for 386(486) AT clones. The above is an excerpt from Linus Torvalds’ original announcement of what came to be known worldwide as the Linux operating system (OS), dated August 1991. In hindsight, it is inconceivably modest now that we are in a much better position to appreciate the full revolutionary extent of his post.

Kubernetes 1.23 rc testing with MicroK8s

Today, Kubernetes 1.23 release candidate was made available upstream for testing and experimentation. General availability is planned for December 7th, so now is the time to report back any issues or bugs. Developers, DevOps and open source software enthusiasts can try out the latest features using MicroK8s. MicroK8s is a lightweight, CNCF-certified Kubernetes distribution with a streamlined UX.

Observability vs. monitoring debate: An irreverent view

In the past few years, the word “observability” has steadily gained traction in the discussions around monitoring, DevOps, and, especially, cloud-native computing. However, there is significant confusion about the overlap or difference between observability and monitoring.

Cloud-optimized Linux kernels - what makes Ubuntu the top OS across the clouds

Ubuntu is the platform of choice for deploying and running workloads on public clouds. No other operating system gives you better performance and consistency of experience across public clouds, including Amazon, Azure, Google, IBM and Oracle. There is a reason behind this exceptional experience. By design, Ubuntu images in public clouds include an optimized Linux kernel for each cloud, giving you the best performance and functionality across all instance types and services.

Run your Ubuntu in US Government Clouds

In August 2016, the United States government announced a new federal source-code policy, which mandates that at least 20% of custom source code developed by or for any agency of the federal government must be released as open-source software (OSS). The memo of this policy also states that the Federal Government spends more than $6 billion each year on software through more than 42,000 transactions. Obviously, this is a huge business for all open-source developers.