What to expect of Linux in 2019

2019 just might be the Year of Linux — the year in which Linux is fully recognized as the powerhouse it has become. With Linux playing key roles in the Internet of Things (IoT), cloud technology, supercomputing and artificial intelligence (AI), and with a plethora of conferences and new releases on the horizon, Linux is poised to have a very exciting 2019. Let’s examine some of what we can expect to see.Linux behind the scenes The fact is that most people today are using Linux without ever knowing it — whether on their phones, online when using Google, Facebook, Twitter, GPS devices, and maybe even in their cars, or when using cloud storage for personal or business use. While the presence of Linux on all of these systems may go largely unnoticed by consumers, the role that Linux plays in this market is a sign of how critical it has become.To read this article in full, please click here

Using the Internet of Sound to transfer IoT data via speakers

Some kinds of data should be encoded onto an inaudible, near-ultrasound layer placed on top of normal, audible sounds — a process that could rapidly scale Internet of Things (IoT) adoption, says startup Trillbit.The company says that by doing that kind of overlay, any microphone and speaker is turned into a data-transfer device that then could be used for payments transfers, user authentication, and smart city applications such as digital locks.“There is no common universal protocol to connect Internet of Things,” Trillbit explains on its website. “Speakers [and microphones], which are already in place, and all around us” could perform connections.To read this article in full, please click here

Using the Internet of Sound to transfer IoT data via speakers

Some kinds of data should be encoded onto an inaudible, near-ultrasound layer placed on top of normal, audible sounds — a process that could rapidly scale Internet of Things (IoT) adoption, says startup Trillbit.The company says that by doing that kind of overlay, any microphone and speaker is turned into a data-transfer device that then could be used for payments transfers, user authentication, and smart city applications such as digital locks.“There is no common universal protocol to connect Internet of Things,” Trillbit explains on its website. “Speakers [and microphones], which are already in place, and all around us” could perform connections.To read this article in full, please click here

Supercharging my CLI

I spent a lot of time in the terminal. I can’t really explain why; for many things it just feels faster and more comfortable to do them via the command line interface (CLI) instead of via a graphical point-and-click interface. (I’m not totally against GUIs, for some tasks they’re far easier.) As a result, when I find tools that make my CLI experience faster/easier/more powerful, that’s a big boon. Over the last few months, I’ve added some tools to my Fedora laptop that have really added some power and flexibility to my CLI environment. In this post, I want to share some details on these tools and how I’m using them.

The tools I’ve adopted and that I’ll discuss in this post are:

  • powerline-go for an informative CLI prompt
  • rg for faster content searches
  • fd for faster filename searches
  • fzf for fuzzy command history access and faster directory navigation

Let’s take a closer look at each of these.

A More Informative Shell Prompt

There’s been quite a few articles written about powerline, a Python-based utility that provides a much more informative shell prompt. Instead of going down the traditional powerline route, I found powerline-go—a small, statically linked Continue reading

Interview: Active-Active Data Centers with VXLAN and EVPN

Christoph Jaggi asked me a few questions about using VXLAN with EVPN to build data center fabrics and data center interconnects (including active/active data centers). The German version was published on Inside-IT, here’s the English version.

He started with an obvious one:

What is an active-active data center and why would I want to use an active-active data center?

Numerous organizations have multiple data centers for load sharing or disaster recovery purposes. They could use one of their data centers and have the other(s) as warm or cold standby (active/backup setup) or use all data centers at the same time (active/active).

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Know your SCM_RIGHTS

As TLS 1.3 was ratified earlier this year, I was recollecting how we got started with it here at Cloudflare. We made the decision to be early adopters of TLS 1.3 a little over two years ago. It was a very important decision, and we took it very seriously.

It is no secret that Cloudflare uses nginx to handle user traffic. A little less known fact, is that we have several instances of nginx running. I won’t go into detail, but there is one instance whose job is to accept connections on port 443, and proxy them to another instance of nginx that actually handles the requests. It has pretty limited functionality otherwise. We fondly call it nginx-ssl.

Back then we were using OpenSSL for TLS and Crypto in nginx, but OpenSSL (and BoringSSL) had yet to announce a timeline for TLS 1.3 support, therefore we had to implement our own TLS 1.3 stack. Obviously we wanted an implementation that would not affect any customer or client that would not enable TLS 1.3. We also needed something that we could iterate on quickly, because the spec was very fluid back then, and also something Continue reading

Knowledge of the “Truths in Your Network” is KEY

I am a huge believer in “knowledge is key”.  Yeah… I know… just reading that statement you are probably saying “well yeah… duh”.

Of course knowledge is key… duh, Fish!  We know that!  We love knowledge.  We are knowledge seekers and we love to learn!  I mean… if we didn’t love learning and knowledge why would we be reading this?   Okay… got it.  You love knowledge.  You want to grow your knowledge.   I hear you.  You are basically saying… bring on the knowledge… max the setting!   Got it.

So you most likely extend that desire for knowledge to most of the areas in your life.

For example….

  • Buying a House:  When buying a house you want the knowledge you can get by hiring a subject matter expert to walk thru the entirety of the house and inspect it.  You want knowledge of the truths of that house.
  • Hiring a Financial Advisor: When hiring a financial advisor you just go and “bare all” in reference to your financial situation so they can review every nuance of it.   You want knowledge of the truths of your finances.

Let’s Continue reading

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