Infrastructure
Commentary
2/12/2014
09:56 PM
Dan Tesch
Dan Tesch
Commentary
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DevOps Beginner? Start With Git

Learning to use a version control system such as Git is a sensible way to start on the DevOps path.

So you've heard about DevOps and you're wondering how to get started. If you're ambitious you can learn a programming language. If you're not ready to bite off quite that much, you could get familiar with a configuration management tool such as Puppet or Chef. I'm going to offer another option: learn to work with a software version control system.

Version control systems are like the file servers of the software development world -- but so much more. In addition to being a repository for software source code, version control systems can hold configuration data for infrastructure such as routers, firewalls, switches and Apache Web servers. They can also hold configurations for monitoring systems such as Nagios.

Maintaining your configuration data in a version control system provides an element of change control; want to know when that firewall rule was introduced or when an Apache vhost was added? A version control system can help you track these things. Initially, populating a version control system may be a manual process. But over time some scripting can automate much of the work.

Version control systems have their own lingo: pull requests, merges, branches, commits and diffs; learn what these mean and how to use them. For example, the "diffing" feature lets you quickly view changes to tracked files. Additionally, version control systems can be the epicenter of a continuous integration system.

Becoming proficient with a version control system will give you an entrée to the developer world and help you get familiar with the terms and tools developers use. You'll be a step closer to obtaining meaningful value from a DevOps model -- and that's the goal, right?

Version control systems have been around for years, but in my opinion Git gets the most attention these days, perhaps because Git was originally created by Linus Torvalds. Git is quickly growing in popularity due in part to the powerful collaboration functionality of GitHub. Many developers and DevOps folks now list their public GitHub profiles on their resumes and blogs.

If you're looking for somewhere to get started, check out The Basics of Git and GitHub on YouTube, spend some time at GitImmersion, and then set up your own repo and start honing your Git Fu!

Of course, if your company happens to be using Subversion, Mercurial, Microsoft's Team Foundation Server or something else, the concepts remain largely the same. "Git" involved and start doing DevOps.

Don't miss "The DevOps Pay Raise: Quantifying Your Value To Move Up The Ladder" at Interop Las Vegas. This session will look at look at how you can use tools such as Chef, Puppet, Sensu and Logstash to quantify your value to your company. Register here.

Dan Tesch is an IT Director at a Chicago-area marketing firm. He's also a member of the Interop Advisory Board. Dan's technology experience began in the late 1980s in the publishing industry, and now includes networking, virtualization, storage and security. View Full Bio

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ChrisMurphy
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ChrisMurphy,
User Rank: Author
2/13/2014 | 11:14:13 AM
Progress
This sounds like solid first-step career advice. As for the organization, how much progress can you expect to make in your org using version control alone? Is there an "early win" to aim for from version control that can help build the mo' for DevOps more broadly?   
ericwittman
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ericwittman,
User Rank: Apprentice
2/13/2014 | 12:42:25 PM
Another excellent learning resource for Git
Atlassian also has a great resource for learning the essentials of Git:

https://www.atlassian.com/git

It's a helpful resource that has tutorials, teaches you about Git workflows, migration from other version control systems like SVN, and a ton of other useful resources.

Additionally, if folks are just getting started with Git and don't want to set up their own local server, https://bitbucket.org/ is a great site to host your code on and is the only high volume service that allows for free private repos.
Laurianne
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Laurianne,
User Rank: Author
2/13/2014 | 1:11:59 PM
Thanks
Thanks for the ideas, Eric. Other have similar suggestions?
Thomas Claburn
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Thomas Claburn,
User Rank: Author
2/13/2014 | 8:32:30 PM
Re: Another excellent learning resource for Git
Make sure you learn Git on the command line first before trying client software. It helps a lot.
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