DevOps Zone is brought to you in partnership with:
  • submit to reddit
Cedric Beust08/05/13
1330 views
0 replies

Bringing down servers, one character at a time

The bug went unnoticed in production for a few days until suddenly, the servers started pinning all their CPU's and shortly thereafter, depleting the memory of each instance.

Senthil Kumar08/05/13
14330 views
0 replies

5 IDEs For Ruby On Rails Developers

This blog post will list out some of the IDE‘s which are used by the Ruby on Rails Developers.

Christopher Taylor08/05/13
1239 views
0 replies

Defeat office politics or they’ll defeat you

Politics have been with us since the first cave man decided he wanted influence over the next cave man. It’s a reality of human nature that we all want to get ahead and some are willing to do more than others to make that happen.

Paul Reed08/04/13
2339 views
0 replies

The Ship Show: Training, Vapid or Valuable?

Earlier this year at ChefConf, rabble-rouser Sascha Bates proclaimed that “training is pointless! Why do training when you can just sequester yourself away and read a book!” But, within earshot were Julian Dunn and Nathen Harvey, who both lead training for a living. This episode, we mediate the 'dispute,' tackling training, learning styles, and industry technical certifications.

Abhishek Kumar08/04/13
5650 views
0 replies

Puppet: A Beginner's Concept Guide (Part 4) ~ Where is my Data?

When I started my Puppet-ry, the examples I used to see had all configuration data buried inside the DSL code of manifests, people were trying to use inheritance to push down data. Then I got to see a design pattern in puppet manifests keeping out separate parameters manifest for configuration variables.

Amit Saha08/03/13
3402 views
0 replies

Notes on writing systemd unit files for Beaker’s daemon processes

Recently, I had a chance to write systemd unit files for the daemon processes that run as part of Beaker: beakerd which is the scheduling daemon running on the server and the four daemons running on the lab controller – beaker-proxy, beaker-provision, beaker-watchdog and beaker-transfer.

Michael Mccandless08/03/13
4087 views
0 replies

A New Version of the Compact Language Detector

It's been almost two years since I originally factored out the fast and accurateCompact Language Detector from the Chromium project, and the effort was clearly worthwhile: the project is popular and others have created additional bindings for languages including at least Perl, Ruby, R, JavaScript, PHP and C#/.NET.

Paul Hammant08/02/13
3309 views
0 replies

Elastic Provisioning of New Environments

A high functioning Agile development team is going to be able to new environments casually. Those could be permanent environments, but are more likely to be temporary and for a discrete purpose. A two-week performance measurement project could be one. Why not use a pre-existing environment though?

Anil Saldhana08/02/13
4121 views
0 replies

Authorization (Access Control) Best Practices

I use the following statement when I describe the differences between authentication and authorization. Authentication is finite while Authorization is infinite.

Jimmy Kamboj08/02/13
4012 views
0 replies

Major Differences between Joomla 2.5 and 3.0

The significant variation is that the latest version has been updated to a modern design with additional features and many simple and user-friendly interfaces. Also, the new Joomla 3.0 has the exciting feature of being mobile friendly and can be specifically used with any modern devices.

Clemens Helm08/02/13
1315 views
0 replies

Book Review: Cucumber Recipes

There are already many books that get you started with Cucumber, but most of them only teach you the basics or focus on one technology. Cucumber has evolved to a powerful tool though, and today there’s almost no kind of software application that Cucumber can’t test.

Mark Needham08/01/13
3202 views
1 replies

Getting Started with Screen

I’ve previously come across screen and tmux which allow you to create a session in which you can do some work even if you aren’t currently connected to it which was perfect for my use case. screen was a bit more familiar so I decided to use that and I thought I should make a quick note of some of its basic flags for future me.

Mikko Ohtamaa08/01/13
3047 views
0 replies

Secure User Uploads and Exploiting Served User Content

Hosting user uploaded files opens a potential attack vector against your website. This post discusses the pitfalls of user content and strategies for dealing with those challenges in Python, Django, and Plone CMS, but the advices applies on all systems.

Mark Morrell08/01/13
998 views
0 replies

Intranet Governance First, Intranet Launch Next

I have seen many intranets over the years. One thing that always makes me sad is when I see a new intranet launched with a great design, clear structure, interesting content……but no or poor governance.

Remy Sharp07/31/13
4762 views
0 replies

How to Setup Your Mac Web Development Environment

Following my accident a couple of weeks ago, I’ve now been blessed with a new MacBook Pro which needs setting up again. So, I thought I’d document setting up MySQL, PHP5 and Apache with multiple virtual hosts.

Alexey Kutuzov07/31/13
4508 views
0 replies

Create Your Own DSL

In software development I encounter problems with creating user interfaces for manage logical chains. More complex chain of logic cause more difficult to develop, test, and debug resulting interface. That interfaces are hard to understand without help of man, who participated in the design.

Mark Needham07/31/13
3657 views
0 replies

s3cmd: put fails with “Connection reset by peer” for large files

I recently wanted to copy some large files from an AWS instance into an S3 bucket using s3cmd but ended up with the following error when trying to use the ‘put’ command...

Greg Duncan07/31/13
1783 views
0 replies

Free eBook: "Testing for Continuous Delivery with Visual Studio 2012" (now with ePub)

Here's a free ebook guide to testing for continuous delivery with Visual Studio 2012.

Eric Gregory07/30/13
5782 views
0 replies

Packer - Machine Images from the Maker of Vagrant

Packer is a new, open source configuration management tool from Mitchell Hashimoto, creator of Vagrant. Packer aims to automate the creation of any type of machine image for multiple platforms, from a single source configuration.

Istvan Forgacs07/30/13
2939 views
0 replies

How Static Analysis Can Help Code Comprehension

Are you able to understand 32 lines of Java code in a short time? Let's see. This article explains why understanding Java code is difficult, and how a sophisticated static analyser like 4D Ariadne can help. We have created a short case study on code comprehension to help you compare your skill with that of our developers.

Eric Minick07/30/13
1363 views
0 replies

Continuous Testing – Where does it fit next to Integration and Delivery?

I normally think in terms of Continuous Integration and Continuous Delivery. Where does “Continuous Test” fit in? Paul Duvall, a co-author of the great Continuous Integration book, describes continuous testing as running as many tests as possible with every code change in an article on DeveloperWorks.

Ian Skerrett07/30/13
1014 views
0 replies

When to Move a Project to an Open Source Foundation

"When should I consider moving my project to a Foundation?" Of course the answer is always dependent on the project but I think there are a couple of general scenarios...

Lieven Doclo07/30/13
760 views
0 replies

On Religious Wars and Technology

Fear and aversion are caused by sheer ignorance. When you gain knowledge on a competing framework, fear can turn in two directions.

Jim Bird07/29/13
4253 views
0 replies

Maintaining Software Sucks – and What We Can Do About It

If you ask most developers, they will tell you that working in maintenance sucks. Understanding and fixing somebody else’s lousy code is hard. It’s tedious. And it’s frustrating – because you know you would do a better job if you were given the chance to do it over and do it right.

Daniel Ackerson07/29/13
3432 views
0 replies

If Devs Own Testing, Ops Own the Environment

Did the test fail due to an application bug or is it the environment? Once again, the dreaded chant of “it works locally” is taken up. What most people fail to understand is that the failing test is the first sign of a communication breakdown between developers and sysadmins.