Distributed Tracing — The Most Wanted and Missed Tool in the Microservice World

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May 2, 2016

We, as engineers, always wanted to simplify and automate things. This is something in our nature. That’s how our brains work. That’s how procedural programming was born. After some time, the next level of evolution was object oriented programming.

The idea was always the same. Take something big and try to split it into isolated abstractions with hidden implementations. It is much easier to think about complex system using abstractions. It is way more efficient to develop isolated blocks.

The way we did system architecture design was evolving too…

The First Five Linux Command-Line Apps Every Admin Should Learn

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Tech Republic

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May 2, 2016

Linux has taken over the enterprise. It runs the backbone for many of the largest companies. It’s one of the biggest players in big data. If you’re serious about moving up the IT ladder, at some point, you’re going to have to know Linux.

And although the Linux GUI tools are now as good as those available for any other platform, some tasks will require a bit of command-line knowledge. But where do you begin? You start off where every Linux newbie should… with what I believe are five of the most important commands for new Linux admins to learn.

Break Scalability Barriers in OpenFlow SDN

By

InfoWorld

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May 2, 2016

Over the past couple of years, software-defined networking (SDN) has emerged as a strong alternative to traditional networking approaches in the areas of WAN, data center networks, and network overlay solutions. The primary benefit realized from SDN, besides open networking, is the ability to accelerate service deployments. SDN solutions using OpenFlow tackle complex problems, including dynamic provisioning, interconnection, and fault management. Although the functionality of SDN has evolved and matured, the scalability of SDNs based on OpenFlow has been limited by OpenFlow’s ties to ternary content-addressable memory (TCAM). OpenFlow by design was implemented in the TCAM.

Git 2.8.2 Popular Source Code Management System Released with Over 18 Bug Fixes

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Softpedia

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May 2, 2016

The stable 2.8 series of the popular Git source code management system just received its second point release, version 2.8.2, bringing over 18 improvements and bug fixes.

As usual, we’ve managed to get our hands on the internal changelog (attached at the end of the article for reference), so we can tell you what’s new in Git 2.8.2, which comes approximately one month after the release of the first maintenance build, version 2.8.1, which only fixed the broken “make rpmbuild” target.

Fixes since Git 2.8.1 include support for the “git send-email” command to parse an alias file in the mailrc format that contained trailing whitespaces, support for the “git commit” command to read in the SQUASH_MSG variable, which displayed the log messages from all the squashed commits, as well as build updates for Microsoft Visual C++.

Ubuntu 16.04 LAMP server tutorial with Apache 2.4, PHP 7 and MariaDB (instead of MySQL)

By

Falko Timme

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May 2, 2016

LAMP is short for Linux, Apache, MySQL, PHP. This tutorial shows how you can install an Apache 2.4 web server on an Ubuntu 16.04 (Xenial Xerus) server with PHP 7 support (mod_php) and MySQL / MariaDB. Additionally, I will install PHPMyAdmin to make MySQL administration easier. A LAMP setup is the perfect basis for CMS systems like Joomla, WordPress or Drupal.

Linus Torvalds Announces Linux Kernel 4.6 RC6, Dubbed “Charred Weasel”

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Softpedia

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May 2, 2016

It’s Sunday night, so Linus Torvalds has announced the release of a new RC build for the upcoming Linux 4.6 kernel series, which has been dubbed “Charred Weasel.”

According to Linus Torvalds, things continue to remain fairly calm in the development cycle of Linux kernel 4.6, which might very well get one more Release Candidate (RC), version RC7, next week, on May 8, 2016. Then, one week later, on May 15, we should be able to get our hands on the final release of Linux kernel 4.6, which will hit the stable repositories of various distributions most probably around June 2016.

“Things continue to be fairly calm, although I’m pretty sure I’ll still do an rc7 in this series,” said Linus Torvalds. “There’s nothing particularly scary in here…

Creating functional ssh keypair on RDO Mitaka via Chrome Advanced REST Client

By

Boris Derzhavets

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May 1, 2016

The problem here is that REST API POST request creating ssh-keypair to
access nova servers doesn’t write to disk rsa private key and only upload
public one to nova. Closing Chrome Client results loosing rsa private key.
To prevent failure to write to disk private key , save response-export.json as shown bellow. Working via CLI ( invoking curl ) doesn’t write private rsa key to disk as well.

Complete text may be seen here http://bderzhavets.blogspot.com/2016/05/creating-functional-ssh-keypair-on-rdo.html

How to Create, Deploy and Launch Virtual Machines in OpenStack

By

Tecmint

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May 1, 2016

In this guide we will learn how to create images and launch an instance of an image (virtual machine) in OpenStack and how to gain control over an instance via SSH. Requirements: Install OpenStack…

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Top 5 Best Alternative Linux Distributions for Windows 10 Users

By

Tecmint

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April 30, 2016

It is quite intriguing how Windows 10 took off shortly after its announcement on the 29 of July 2015 and it is without a doubt that it’s the best Windows ever…

In this article, we’ve picked 5 Linux distributions that will give you the best possible Windows-esque desktop experience on Linux.

Defining the OpenStack Cloud Roadmap

By

eWeek

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April 29, 2016

VIDEO: Jonathan Bryce, executive director of the OpenStack Foundation, gives the new roadmap effort a ‘D’ grade, but expects improvement soon.

In the standard philosophy that has defined open-source since its earliest days, developers simply “scratch an itch” for things they want done, rather than follow predefined product roadmaps. At the OpenStack Summit in Austin, Texas, this week, one of the things that was discussed was the emergence of the OpenStack Foundation roadmap effortto help provide visibility into what is coming next for the cloud.

In a video interview with eWEEK, Jonathan Bryce, executive director of the OpenStack Foundation, discusses his views on the roadmap effort and how he expects it to evolve.