What Is Dev. Ops? Like “Quality” or “Agile,” Dev. Ops is a large enough concept that it requires some nuance to fully understand.

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We have put together a comprehensive Dev. Ops Fundamentals course for lynda. Dev. Ops history to functional areas of Dev. Ops. The first followup on Infrastructure Automation is also live and there’s more to come. We hope you enjoy them.

The first was also called “agile infrastructure” or “agile operations”; it sprang from applying Agile and Lean approaches to operations work. Operations: The New Secret Sauce). One definition Jez Humble proposed to me is that Dev.

Ops is “a cross- disciplinary community of practice dedicated to the study of building, evolving and operating rapidly- changing resilient systems at scale.”That’s good and meaty, but it may be a little too esoteric and specific to Internet startup types. I believe that you can define Dev. Ops more practically as Dev. Ops is the practice of operations and development engineers participating together in the entire service lifecycle, from design through the development process to production support.

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A primary corollary to this is that part of the major change in practice from previous methods is. Dev. Ops is also characterized by operations staff making use many of the same techniques as developers for their systems work.

Those techniques can range from using source control to testing to participating in an Agile development process. For this purpose, “Dev. Ops” doesn’t differentiate between different sysadmin sub- disciplines – “Ops” is a blanket term for systems engineers, system administrators, operations staff, release engineers, DBAs, network engineers, security professionals, and various other subdisciplines and job titles. The old view of operations tended towards the “Dev” side being the “makers” and the “Ops” side being the “people that deal with the creation after its birth” – the realization of the harm that has been done in the industry of those two being treated as siloed concerns is the core driver behind Dev. Ops. In this way, Dev. Ops can be interpreted as an outgrowth of Agile – agile software development prescribes close collaboration of customers, product management, developers, and (sometimes) QA to fill in the gaps and rapidly iterate towards a better product – Dev.

Ops says “yes, but service delivery and how the app and systems interact are a fundamental part of the value proposition to the client as well, and so the product team needs to include those concerns as a top level item.” From this perspective, Dev. Ops is simply extending Agile principles beyond the boundaries of “the code” to the entire delivered service. Definition In Depth. Dev. Ops means a lot of different things to different people because the discussion around it covers a lot of ground. I’ve added a fifth, the tooling level – talk about agile and devops can get way too obsessed with tools, but pretending they don’t exist is also unhelpful. Agile Values – Top level philosophy, usually agreed to be embodied in the Agile Manifesto.

These are the core values that inform agile. Agile Principles – Generally agreed upon strategic approaches that support these values. You don’t have to buy into all of them to be Agile, but if you don’t subscribe to many of them, you’re probably doing something else. Agile Methods – More specific process implementations of the principles. Standups, planning poker, backlogs, CI, all the specific artifacts a developer uses to perform their work.

Agile Tools – Specific technical implementations of these practices used by teams to facilitate doing their work according to these methods. I believe the different parts of Dev. Ops that people are talking about map directly to these same levels.

Dev. Ops Values – I believe the fundamental Dev. Ops values are effectively captured in the Agile Manifesto – with perhaps one slight emendation to focus on the overall service or software fully delivered to the customer instead of simply “working software.” Some previous definitions of Dev. Ops, like Alex Honor’s “People over Process over Tools,” echo basic Agile Manifesto statements and urge dev+ops collaboration.

Dev. Ops Principles – There is not a single agreed upon list, but there are several widely accepted attempts – here’s John Willis coining “CAMS” and here’s James Turnbull giving his own definition at this level. I’ve made a cut at “Dev. Ops’ing” the existing Agile manifesto and principles here. I personally believe that Dev. Ops at the conceptual level is mainly just the widening of Agile’s principles to include systems and operations instead of stopping its concerns at code checkin. Sql Server Bulk Update Chromium. Dev. Ops Methods – Some of the methods here are the same; you can use Scrum with operations, Kanban with operations, etc. There are some more distinct methods, like Visible Ops- style change control and using the Incident Command System for incident reponse.

The set of these methodologies are growing; a more thoughtful approach to monitoring is an area where common methodologies haven’t been well defined, for example. Dev. Ops Practices –Specific techniques used as part of implementing the above concepts and processes. Continuous integration and continuous deployment, “Give your developers a pager and put them on call,” using configuration management, metrics and monitoring schemes, a toolchain approach to tooling. In the Dev. Ops world there’s been an explosion of tools in release (jenkins, travis, teamcity), configuration management (puppet, chef, ansible, cfengine), orchestration (zookeeper, noah, mesos), monitoring, virtualization and containerization (AWS, Open. Stack, vagrant, docker) and many more.

While, as with Agile, it’s incorrect to say a tool is “a Dev. Ops tool” in the sense that it will magically bring you Dev. Ops, there are certainly specific tools being developed with the express goal of facilitating the above principles, methods, and practices, and a holistic understanding of Dev. Ops should incorporate this layer. In the end, Dev. Ops is a little tricky to define, just like its older brother Agile. But it’s worth doing. When left at the pure philosophy level, both can seem like empty mom- and- apple- pie statements, subject to the criticism “You’re just telling me .

In the end, what Dev. Ops hopes to bring to Agile is the understanding and practice that software isn’t done until it’s successfully delivered to a user and meets their expectations around availability, performance, and pace of change.

Specifically, I’ve come to believe there are three primary practice areas that are usually discussed in context of Dev. Ops. Infrastructure Automation – create your systems, OS configs, and app deployments as code. Continuous Delivery – build, test, deploy your apps in a fast and automated manner. Site Reliability Engineering – operate your systems; monitoring and orchestration, sure, but also designing for operability in the first place.

History of Dev. Ops. The genesis of Dev. Ops comes from an increasing need for innovation on the systems side of technology work. In 2. 00. 9 there were some important presentations about the developer/operations collaboration at large shops (most notably Flickr) and how that promoted safe, rapid change in Web environments. More people began to think about these newer concepts and wonder how they might implement them.

Somewhat in parallel, as agile development’s growth in the development space was reaching its most fevered pitch and moving from niche to common practice, this turned into thinking about “Agile Systems Administration” especially in Europe. Here’s a good piece by John Willis on the history of the Dev. Ops movement that deconstructs the threads that came together to create it. Dev. Ops emerged from a “perfect storm” of these things coming together. Since then it has developed further, most notably by the inclusion of Lean principles by many of the thought leaders. What is Dev. Ops Not? It’s Not No. Ops.

It is not “they’re taking our jobs!”  Some folks thinks that Dev.