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Getting started with Prometheus

jeu, 12/20/2018 - 09:02

Prometheus is an open source monitoring and alerting system that directly scrapes metrics from agents running on the target hosts and stores the collected samples centrally on its server. Metrics can also be pushed using plugins like collectd_exporter—although this is not Promethius' default behavior, it may be useful in some environments where hosts are behind a firewall or prohibited from opening ports by security policy.


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13 Linux must-reads in 2018

jeu, 12/20/2018 - 09:01

I have been writing for Opensource.com for about four years and reading it since at least 2011. I am always amazed by the number and quality of the articles on the site. I have learned a great deal about many aspects of open source in general—and about Linux in particular.

The articles we publish about Linux are always very popular and generate a lot of interest. Of the many Linux-related articles published on Opensource.com in 2018, these 13 garnered the most views.

Top 13 Linux stories of 2018
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7 CI/CD tools for sysadmins

jeu, 12/20/2018 - 09:00

Continuous integration, continuous delivery, and continuous deployment (CI/CD) have all existed in the developer community for many years. Some organizations have involved their operations counterparts, but many haven't. For most organizations, it's imperative for their operations teams to become just as familiar with CI/CD tools and practices as their development compatriots are.


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Solve a puzzle at the Linux command line with nudoku

mer, 12/19/2018 - 09:03

Welcome back to another installment in our 24-day-long Linux command-line toys advent calendar. If this is your first visit to the series, you might be asking yourself what a command-line toy even is. We’re figuring that out as we go, but generally, it could be a game, or any simple diversion that helps you have fun at the terminal.

Some of you will have seen various selections from our calendar before, but we hope there’s at least one new thing for everyone.


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An introduction to Python and containers: 6 conference talks you may have missed

mer, 12/19/2018 - 09:02

While there are a ton of tutorials, blog posts, documentation, and other content available to learn about Python and containers, there's something special about learning a new skill from a conference talk. Speakers usually give a more personal perspective and use interesting or quirky metaphors to make their points memorable.


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How to open source your Python library

mer, 12/19/2018 - 09:01

You wrote a Python library. I'm sure it's amazing! Wouldn't it be neat if it was easy for people to use it? Here is a checklist of things to think about and concrete steps to take when open sourcing your Python library.

1. Source

Put the code up on GitHub, where most open source projects happen and where it is easiest for people to submit pull requests.


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10 books for your DevOps reading wishlist

mer, 12/19/2018 - 09:00

Looking for good DevOps books to read? Don't know where to start? Follow this reading wishlist to find the best books on DevOps for practical thinkers. You'll learn from authors who have addressed real-life problems and contributed to the innovation process.


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Why NASA open sourced the Rover

mar, 12/18/2018 - 09:03

The host of the Command Line Heroes podcast, Saron Yitbarek, kicks off each episode with a sound-studded description of an event that sets the stage for the topic of the episode. Sometimes it's a speech from Al Gore, and sometimes its the Mars Curiosity Rover landing.

You should go have a listen.

In the final episode recap, Yitbarek walks us through "how open source fuels some of humankind's grandest projects."


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Use your Linux terminal to celebrate a banner year

mar, 12/18/2018 - 09:02

Hello again for another installment in our 24-day-long Linux command-line toys advent calendar. If this is your first visit to the series, you might be asking yourself what a command-line toy even is. We’re figuring that out as we go, but generally, it could be a game, or any simple diversion that helps you have fun at the terminal.

Some of you will have seen various selections from our calendar before, but we hope there’s at least one new thing for everyone.

Today's toy if figlet, a utility for printing text in banner form across your Linux terminal.


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The modern programmer: 10 must-read articles from this year

mar, 12/18/2018 - 09:01

Programming is about languages, of course, but also much more. Along with good languages, programmers need toolsets to support coding: software development kits (SDKs), command-line utilities for source-code inspection and even editing, package managers, repositories targeted at developers, and so on. The ten articles listed below cover programming in this broad sense.


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How to craft a one-sentence description of your organization's purpose

mar, 12/18/2018 - 09:00

I began my career in the automotive industry, training dealership retail salespeople. Before each of my seminars, I would ask each vehicle salesperson, one-on-one, what they thought their job was (that is, the specific tasks it involved) and what they considered a "successful day". I then asked the sales manager (the salespeople's direct boss), one-on-one, the same questions.


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Linux command-line fun, top configuration tools, Kubeflow, and more

lun, 12/17/2018 - 19:50

Once again articles in our 24 days of fun Linux command-line tricks dominated our top 10 list last week. Readers also wanted to know more about open source configuration management tools, Kubeflow, getting started in AI, and more.

Would you like to get started writing for Opensource.com in the new year? We'll help you make that resolution a reality, so drop us a note with your article idea and outline:  open@opensource.com.


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Take a swim at your Linux terminal with asciiquarium

lun, 12/17/2018 - 09:03

We're now nearing the end of our 24-day-long Linux command-line toys advent calendar. Just one week left after today!. If this is your first visit to the series, you might be asking yourself what a command-line toy even is. We’re figuring that out as we go, but generally, it could be a game, or any simple diversion that helps you have fun at the terminal.

Some of you will have seen various selections from our calendar before, but we hope there’s at least one new thing for everyone.


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8 tips to help non-techies move to Linux

lun, 12/17/2018 - 09:01

Back in 2016, I took down the shingle for my technology coaching business. Permanently. Or so I thought.

Over the last 10 months, a handful of friends and acquaintances have pulled me back into that realm. How? With their desire to dump That Other Operating System™ and move to Linux.


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6 tips and tricks for using KeePassX to secure your passwords

lun, 12/17/2018 - 09:00

Our increasingly interconnected digital world makes security an essential and common discussion topic. We hear about data breaches with alarming regularity and are often on our own to make informed decisions about how to use technology securely. Although security is a deep and nuanced topic, there are some easy daily habits you can keep to reduce your attack surface.


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Schedule a visit with the Emacs psychiatrist

dim, 12/16/2018 - 09:00

Welcome to another day of the 24-day-long Linux command-line toys advent calendar. If this is your first visit to the series, you might be asking yourself what a command-line toy even is. We’re figuring that out as we go, but generally, it could be a game, or any simple diversion that helps you have fun at the terminal.

Some of you will have seen various selections from our calendar before, but we hope there’s at least one new thing for everyone.


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Head to the arcade in your Linux terminal with this Pac-Man clone

sam, 12/15/2018 - 09:00

Welcome back to another day of the Linux command-line toys advent calendar. If this is your first visit to the series, you might be asking yourself what command-line toys are all about. Basically, they're games and simple diversions that help you have fun at the terminal.

Some are new, and some are old classics. We hope you enjoy.


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The Linux terminal is no one-trick pony

ven, 12/14/2018 - 09:03

Welcome to another day of the Linux command-line toys advent calendar. If this is your first visit to the series, you might be asking yourself what a command-line toy even is. We’re figuring that out as we go, but generally, it could be a game, or any simple diversion that helps you have fun at the terminal.

Some of you will have seen various selections from our calendar before, but we hope there’s at least one new thing for everyone.


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Tips for using Flood Element for performance testing

ven, 12/14/2018 - 09:01

In case you missed it, there’s a new performance test tool on the block: Flood Element. It’s a scalable, browser-based tool that allows you to write scripts in JavaScript that interact with web pages like a real user would.

Browser Level Users is a newer approach to load testing that overcomes many of the common challenges we hear about traditional methods of testing. It offers:


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Protecting the world’s oceans with open data science

ven, 12/14/2018 - 09:00

For environmental scientists, researching a single ecosystem or organism can be a daunting task. The amount of data and literature to comb through (or create) is often overwhelming.

So how, then, can environmental scientists approach studying the health of the world’s oceans? What ocean health means is a big question in itself—oceans span millions of square miles, are home to countless species, and border hundreds of countries and territories, each of which has its own unique marine policies and practices.


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