Sometimes the people we exclude are the ones we did not realize were there. Screen readers are an essential tool for blind and visually-impaired people to use software and browse the Internet. In open source projects and communities, Markdown is a lightweight markup language used to format text. It is also used in many other places. Often you need to embed an image into whatever you are writing (a picture, a diagram, or some useful visual aid to get your point across). One of the lesser-known and used features of Markdown are alt tags for images.Continue reading
Tagthings you should know and understand
I was reviewing one of my old journals this morning and re-read an early entry from when I was studying abroad in Dubrovnik, Croatia. The entry was a time when I learned more about a man named Seth Vidal by chance. Reading this entry again the week before Fedora Appreciation Week motivated me to share it and add to the stream of stories surrounding his life and passing.
The entry is lifted out of my journal with minimum edits. I thought about fully revising it or updating it before publishing. Many parts I would write in a different way now, but I decided to let it be. It reflects my perspective at that particular moment and time at 19 years old. It is more personal than other posts I’ve published and maybe it’s a little uncomfortable for me to share, but I felt like it was worth doing anyways.
entry002: 2017-02-12Continue reading
The needs and demands of infrastructure environments changes every year. With time, systems become more complex and involved. But when infrastructure grows and becomes more complex, it’s meaningless if we don’t understand it and what’s happening in our environment. This is why monitoring tools and software are often used in these environments, so operators and administrators see problems and fix them in real-time. But what if we want to predict problems before they happen? Collecting metrics and data about our environment give us a window into how our infrastructure is performing and lets us make predictions based on data. When we know and understand what’s happening, we can prevent problems before they happen.
But how do we collect and store this data? For example, if we want to collect data on the CPU usage of 100 machines every ten seconds, we’re generating a lot of data. On top of that, what if each machine is running fifteen containers? What if you want to generate data about each of those individual containers too? What about by the process? This is where time-series data becomes helpful. Time-series databases store time-series data. But what does that mean? We’ll explain all of this and more and introduce you to InfluxDB, an open source time-series database. By the end of this article, you will understand…
- What time-series data / databases are
- Quick introduction to InfluxDB and the TICK stack
- How to install InfluxDB and other tools
Internet Relay Chat, or IRC, is one of the oldest chat protocols around and still popular in many open source communities. IRC’s best strengths are as a decentralized and open communication method, making it easy for anyone to participate by running a network of their own. There’s also a variety of clients and bots available for IRC. But on the reverse side, usability is a concern. Most common user interfaces for IRC clients or platforms aren’t always intuitive. People from parts of the world with unstable Internet connections are challenged with remaining connected to participate in conversation. Many people have tried addressing this problem before, but none have come as far as Riot.
This article was originally published on the Fedora Magazine.
This article is part of a short series that introduces Kubernetes. This beginner-oriented series covers some higher level concepts and gives examples of using Kubernetes on Fedora.
The information technology world changes daily, and the demands of building scalable infrastructure become more important. Containers aren’t anything new these days, and have various uses and implementations. But what about building scalable, containerized applications? By itself, Docker and other tools don’t quite cut it, as far as building the infrastructure to support containers. How do you deploy, scale, and manage containerized applications in your infrastructure? This is where tools such as Kubernetes comes in. Kubernetes is an open source system that automates deployment, scaling, and management of containerized applications. Kubernetes was originally developed by Google before being donated to the Cloud Native Computing Foundation, a project of the Linux Foundation. This article gives a quick precursor to what Kubernetes is and what some of the buzzwords really mean.
Today’s entry to the blog is sourced from a thread that I posted on the SpigotMC Forums. If you wish to join in the discussion about this, feel free to chime in on the thread or leave a comment on my blog. In this post, I covered licensing, licenses, and why your open-source software project should have a license. You can read my original post in this blog entry.