DC/OS: A Brief History
Do you remember the days of deploying an N-tier application to on-premises servers? The planning that went into determining the right amount of hardware to use so that you weren’t under or significantly over-provisioned. Deployments were often problematic because what ran well on the developer’s computer didn’t always work outside of their environment. Deployments also were assumed to cause downtime, and scheduled during non-peak hours.
In the event of a hardware failure, your app might have been unavailable depending on how much hardware you had access to, and how the application was designed. Failovers may or may not have been automatic, and frankly, it was all a lot of work.
Well, if you thought that was difficult, imagine trying to do all of this at the scale of Google, Facebook, Twitter, Netflix, or similar companies.
All of the companies I just mentioned found that hyperscale computing required a new way to look at things. And regardless of the actual tools that they used, they all had the same solution, which was to treat their entire data center as a single entity.
And that’s what DC/OS does: it’s a central OS for your data center, and it’s the topic of this lesson.
Learning Objectives
- You should understand how DC/OS is used
- You should have a high-level understanding of DC/OS
- You should be familiar with the UI
- You should be familiar with the CLI
- You should be able to install services from the catalog
Intended Audience
- Sysadmins
- Developers
- DevOps Engineers
- Site Reliability Engineers
Prerequisites
- Familiarity with containers
- Comfort with the command line
Topics
| Lecture | What you'll learn |
|---|---|
| Intro | What to expect from this lesson |
| A Brief History | The history of DC/OS |
| Overview | An overview of DC/OS |
| Components | About the components of DC/OS |
| Exploring the UI | How to navigate the UI |
| Installing WordPress (UI) | How to install WordPress from the Catalog |
| Installing WordPress (CLI) | How to install WordPress from the Catalog |
| Summary | How to keep learning |
Links
DC/OS Open Source vs. Enterprise comparison
DC/OS agent OS requirements
If you have thoughts or suggestions for this lesson, please contact Cloud Academy at support@cloudacademy.com.
Ben Lambert is a software engineer and was previously the lead author for DevOps and Microsoft Azure training content at Cloud Academy. His courses and learning paths covered Cloud Ecosystem technologies such as DC/OS, configuration management tools, and containers. As a software engineer, Ben’s experience includes building highly available web and mobile apps. When he’s not building software, he’s hiking, camping, or creating video games.