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Willie Wheeler12/17/12
6 replies

The Virtues of Cowboy Development

The cowboy developer adds unplanned features, commits code past the code freeze and generally works outside the control structures that management has put in place to keep development manageable. However, one man’s emergency release is another man’s continuous delivery.

Ben Wootton12/17/12
0 replies

The State of the Modern Web App Landscape

With so many tools, techniques, and industry trends crossing over into the mainstream, 2012 is shaping up to be one of the most interesting years in software development in a long while. The landscape is literally changing underneath us developers at the moment.

Tom O'connor12/17/12
0 replies

Understanding Network Motifs

It occurs to me that in scalable systems engineering (the sort of thing I do for a living), you only tend to see Bi-fan networks and Bi-parallel ones.

Eric Gregory12/16/12
0 replies

DevOps Best Practices for Cross-Platform Mobile Apps

This video explores DevOps best practices with cross-platform mobile apps.

Geoffrey Papilion12/16/12
0 replies

6 Phone Screen Questions for an Ops Candidate

My company is hiring, and I’ve been thinking a lot more about what types of question are appropriate for a phone interview, but still give enough detail to lead me to a conclusion as to whether I think the person on the other end is competent.

Joe Miller12/15/12
0 replies

Simulate Network Latency, Packet Loss, and Low Bandwidth on Mac OSX

Sometimes while testing you may want to be able to simulate network latency, or packet loss, or low bandwidth. I have done this with Linux and tc/netem as well as with Shunra on Windows, but I had never done it on Mac OSX.

Alex Soto12/14/12
0 replies

Metrics: A New Way to Monitorize Your Application

When you are running long term applications like web applications, it is good to know some statistics about them, like number of requests served, request durations, or the number active requests.

Rob Golding12/13/12
0 replies

Graphing Traffic With Munin's IP Plugin

This post explores using the Munin ip_ plugin to monitor traffic to and from particular hosts using iptables.

Geoffrey Papilion12/13/12
0 replies

Just Enough Ops of Devs

A few weeks ago I was reading through the chef documentaion and I came across the page “Just Enough Ruby for Chef.” This inspired me to put together a quick article on how much Linux a developer needs to know.

Giorgio Sironi12/12/12
2 replies

The danger of large releases: Trenord case study

Stopping or delaying the majority of trains (and thousands of people) for days isn't the best advertising for large releases.

Ben Wootton12/12/12
0 replies

Why DevOps Matters (To Developers)

DevOps stems from the idea that developers and operations should work more closely together – communicating, knowledge sharing, and collaborating to increase the quality of the systems that we build and operate.

Moshe Kaplan12/12/12
0 replies

How Do You Use Rsync for High Availability Environments?

Rsync has a simple protocol that replicates a directory (one or more) on a single server to other servers. This can be achieved in two different methods...

Eric Minick12/11/12
0 replies

In Defense of DevOps Teams

It’s in vogue right now to claim that there’s no such thing as a DevOps team or warn about certain kinds of teams that brand themselves DevOps but are not. Jez Humble’s doing it. Patrick Debois has made similar noises in the past.

Mehdi Daoudi12/11/12
0 replies

IT Operations News Roundup — Dec 3rd to 9th

In case you missed them last week, here's a roundup of noteworthy IT ops links, including Firefox's new approach to page load, 61 countries that can't be easily cut off from the web, and a hack that leverages Amazon's Silk browser for backdoor cloud computing.

Matthias Marschall12/10/12
0 replies

Devops Anti-Patterns: Warning Signs that Your Team is Slipping

While I’m collecting Devops Protocols which highlight healthy patterns in your organization, let’s take a quick look at the opposite: Devops anti-patterns. Would you be able to spot the warning signs when your team starts to slip in the wrong direction?

Eric Minick12/10/12
1 replies

Dependencies All the Way Down

I’ve spent most of the last decade working on problems in build, deployment and release management. While automation has been a focus of mine, the hard part in these domains have always been around dependency management.

Tom O'connor12/09/12
0 replies

Jenkins as a Job Dispatch Engine

I get easily tired of doing the same thing over and over again, and will, wherever possible, script or automate it to make life easier for myself. This could be in the form of a lightweight webapp/REST api for stuff, or in this case, I used Jenkins.

Mikko Ohtamaa12/08/12
0 replies

Timeouting Commands in Shell Scripts

Enter the real world: Your network is disconnected. DNS goes downs. Your HTTP hooks and downloads stall. Interprocess communication hangs. Here is an example how to create timeouts and notifications in a shell script.

Paul Hammant12/07/12
0 replies

Push or Pull of Config Changes for a Production Stack

An outstanding issue is how to get changed config data (JSON) to the nodes in a production stack that need it. Here's a brain-dump of the choices, without mentioning specific languages.

Willie Wheeler12/06/12
0 replies

Pushing twice daily: our conversation with Facebook’s Chuck Rossi

We figured that we could learn a thing or two about continuous delivery from Facebook, so we reached out to Chuck Rossi, Facebook’s first release engineer and the head of their release engineering team.

Mark Needham12/05/12
1 replies

There's No Such Thing As a DevOps Team?

A few weeks ago Jez Humble wrote a blog post titled “There’s no such thing as a ‘DevOps team.’” Here are some thoughts about the article and what a DevOps team actually is.

Gareth Rushgrove12/05/12
0 replies

On the Forge

I’ve been spending a bit of time recently pushing a few Puppet modules to the Forge. I started doing it as a bit of an experiment, to find out what I liked and what worked and I decided to writeup a few opinions.

Tomasz Nurkiewicz12/04/12
2 replies

Forcing Tomcat to log through SLF4J/Logback

So you have your executable web application in JAR with bundled Tomcat (make sure to read that one first). However there are these annoying Tomcat logs at the beginning, independent from our application logs and not customizable

Tom O'connor12/04/12
0 replies

Beware G-Wan Snakeoil

I’ve heard quite a bit about the “G-WAN Application Server” over the past few weeks. Initially it was a Serverfault question that left me thinking “WTF.”

Mikko Ohtamaa12/03/12
0 replies

Pgrep and Pkill: Linux Scripting and Process Management Friends.

Often when inspecting an UNIX server as a sysadmin you need to find and kill a (hung) process running with a certain command line arguments.