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Blog

Ted Kern
15 August 2019

Linting ROS 2 Packages with mypy

Internet of Things Article

One of the most common complaints from developers moving into large Python codebases is the difficulty in figuring out type information, and the ease by which type mismatch errors can appear at runtime. Python 3.5 added support for a type annotation system, described in PEP 484. Python 3.6+ expands this with individual variable annotation ...

Alan Pope
15 August 2019

8 Ways Snaps are Different

Ubuntu Article

Depending on the audience, the discussion of software packaging elicits very different responses. Users generally don’t care how software is packaged, so long as it works. Developers typically want software packaging as a task to not burden them and just magically happen. Snaps aren’t magic, but aim to achieve both ease of maintenance and ...

Stephan Fabel
15 August 2019

Why multi-cloud has become a must-have for enterprises: six experts weigh in

Cloud and server Article

Remember the one-size-fits-all approach to cloud computing? That was five years ago. Today, multi-cloud architectures that use two, three, or more providers, across a mix of public and private platforms, are quickly becoming the preferred strategy at most companies. Despite the momentum, pockets of hesitation remain. Some sceptics are und ...

Tytus Kurek
14 August 2019

OpenStack Charms 19.07 – Percona Cluster Cold Start, DVR SNAT and more

Canonical announcements Article

Canonical is proud to announce the availability of OpenStack Charms 19.07. This new release introduces a range of exciting features and several improvements which enhance Charmed OpenStack across various areas. Let’s talk about a few notable ones. Percona cluster cold start The percona-cluster charm now contains a new logic and actions to ...

Andres Rodriguez
12 August 2019

Provisioning ESXi with MAAS: An overview

Cloud and server Article

MAAS has supported provisioning ESXi starting from MAAS 2.5. However, MAAS 2.6 has expanded its support and provides new features that significantly improves the provisioning experience. What is supported? The support MAAS provides for provisioning an operating system varies depending on the operating system in use. Even though MAAS tries ...

Sarah Dickinson
12 August 2019

Julia and Jeff discover the ease of snaps at the Snapcraft Summit

Desktop Desktop

Julia is an open source, high-level, general-purpose, dynamic programming language designed for numerical analysis and computational science, launched in 2012. It solves the “two language” problem: developers can use Julia for both computational and interactive work, instead of needing to work with two different languages which can often ...

Carmine Rimi
12 August 2019

Digest #2019.08.12 – The Kubeflow Machine Learning Toolkit

AI Article

Kubeflow — a machine learning toolkit for Kubernetes – An introduction to Kubeflow from the perspective of a data scientist. This article quickly runs through some key components – Notebooks, Model Training, Fairing, Hyperparameter Tuning (Katib), Pipelines, Experiments, and Model Serving. If you are looking for a quick overview, give thi ...

Canonical
9 August 2019

Enhanced Livepatch desktop integration available with Ubuntu 18.04.3 LTS

Desktop Article

Ubuntu 18.04.3 LTS has just been released. For the Desktop, newer stable versions of GNOME components have been included, as well as a new feature – Livepatch desktop integration. As usual with LTS point releases, the main changes are a refreshed hardware enablement stack (newer versions of the kernel, xorg & drivers) and a number ...

Igor Ljubuncic
8 August 2019

Slow snap? Trace-exec to the rescue!

Desktop Article

Slow applications are never fun. But not knowing why an application is not behaving correctly can be even more frustrating. A well-designed system that can diagnose performance or startup issues and inform the user about the problem goes a long way toward mitigating the frustration, and may even help resolve the root cause altogether. Bac ...

Jeremie Deray
7 August 2019

Creating a ROS 2 CLI command and verb

Robotics Article

Following our previous post on ROS 2 CLI (Command Line Interface), we will see here how one can extend the set of existing CLI tools by introducing a new command and its related verb(s). As support for this tutorial, we will create a ‘Hello World’ example so that the new command will be hello and ...

didrocks
7 August 2019

Enhancing our ZFS support on Ubuntu 19.10 – an introduction

Desktop Article

Ubuntu has supported ZFS as an option for some time. We started with a file-based ZFS pool on Ubuntu 15.10, then delivered it as a FS container in 16.04, and  recommended it for the fastest and most reliable container experience on LXD. We have also created some dedicated tutorials for users who want to become ...

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