OpenStack GitHub Web Hooks Run GNOME with Kolla with Bash in a Container Since 1994: The original magazine of the Linux community What Exactly Is DevOps? Building a Successful Infrastructure Configuration Management with Ansible CI/CD with FOSS Tools PLUS GEEK GUIDE ISSUE 301 | AUGUST 2019 Calculating the ROI of DevSecOps www.linuxjournal.com AUGUST 2019 CONTENTS ISSUE 301 60 DEEP DIVE: DevOps 61 Experts Attempt to Explain DevOps—and Almost Succeed by Bryan Lunduke What is DevOps? How does it relate to other ideas and methodologies within software development? 68 Continuous Integration/Continuous Development with FOSS Tools by Quentin Hartman Up your DevOps game! Get the fundamentals of CI/CD with FOSS tools now! 78 Digging Through the DevOps Arsenal: Introducing Ansible by Petros Koutoupis If you need to deploy hundreds of server or client nodes in parallel, maybe on premises or in the cloud, and you need to configure each and every single one of them, what do you do? 88 My Favorite Infrastructure by Kyle Rankin Take a tour through the best infrastructure I ever built with stops in architecture, disaster recovery, configuration management, orchestration and security. BONUS: GEEK GUIDE Calculating the ROI of DevSecOps by Petros Koutoupis 2 | August 2019 | https://www.linuxjournal.com CONTENTS 6 The DevOps Issue by Bryan Lunduke 8 From the Editor by Doc Searls Where the Internet Gets Real UPFRONT 14 DNA Geometry with cadnano by Joey Bernard 21 Patreon and Linux Journal 22 Loadsharers: Funding the Load-Bearing Internet Person by Eric S. Raymond 27 Reality 2.0: a Linux Journal Podcast 28 News Briefs COLUMNS 32 Kyle Rankin’s Hack and / RV Offsite Backup Update 37 Reuven M. Lerner’s At the Forge Understanding Python’s asyncio 44 Dave Taylor’s Work the Shell Bash Shell Games: Continuing Development of the Go Fish! Game 51 Zack Brown’s diff -u What’s New in Kernel Development 166 Glyn Moody’s Open Sauce Open Source Is Good, but How Can It Do Good? LINUX JOURNAL (ISSN 1075-3583) is published monthly by Linux Journal, LLC. Subscription-related correspondence may be sent to 9597 Jones Rd, #331, Houston, TX 77065 USA. Subscription rate is $34.50/year. Subscriptions start with the next issue. 3 | August 2019 | https://www.linuxjournal.com CONTENTS ARTICLES 106 Build a Versatile OpenStack Lab with Kolla by John S. Tonello Hone your OpenStack skills with a full deployment in a single virtual machine. 127 Running GNOME in a Container by Adam Verslype Containerizing the GUI separates your work and play. 141 Writing GitHub Web Hooks with Bash by Andy Carlson Bring your GitHub repository to the next level of functionality. 151 Words, Words Words—Introducing OpenSearchServer by Marcel Gagné How to create your own search engine combined with a crawler that will index all sorts of documents. AT YOUR SERVICE SUBSCRIPTIONS: Linux Journal is available as a digital SPONSORSHIP: We take digital privacy and digital magazine, in PDF, EPUB and MOBI formats. Renewing responsibility seriously. We've wiped off all old advertising your subscription, changing your email address for issue from Linux Journal and are starting with a clean slate. 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Ulster St. Ste 1120 Denver, CO 80237 and privacy. SUBSCRIPTIONS E-MAIL: [email protected] URL: www.linuxjournal.com/subscribe Mail: 9597 Jones Rd, #331, Houston, TX 77065 Subscribe to SPONSORSHIPS E-MAIL: [email protected] Linux Journal Contact: Director of Sales Danna Vedder Phone: +1-360-890-6285 Digital Edition LINUX is a registered trademark of Linus Torvalds. for only $2.88 an issue. Private Internet Access is a proud sponsor of Linux Journal. SUBSCRIBE TODAY! 5 | August 2019 | https://www.linuxjournal.com The DevOps Bryan Lunduke is a former Software Tester, former Issue Programmer, former VP of Technology, former Linux By Bryan Lunduke Marketing Guy (tm), former openSUSE Board Member... and current Deputy Editor Every few years a new term is coined within the computer of Linux Journal, Marketing industry—big data, machine learning, agile development, Director for Purism, as well as host of the popular Internet of Things, just to name a few. You’d be forgiven for Lunduke Show. More details: not knowing them all. http://lunduke.com. Some of these are new ideas. Some are refinements on existing ideas. Others still are simply notions we’ve all had for a long time, but now we have a new word to describe said notions. Which brings me to a topic we cover in depth in this issue of Linux Journal: DevOps. Not sure what DevOps is? Need it explained to you? It’s okay, I was in the same boat. Start off by reading “Experts Attempt to Explain DevOps—and Almost Succeed” to get a high-level explanation of what this whole DevOps brouhaha is all about. Once you’ve got the concept of DevOps firmly implanted in your brain, it’s time to dive in and look at how specific parts of DevOps can be implemented, starting with “Continuous Integration/Continuous Development with FOSS Tools” by 6 | August 2019 | https://www.linuxjournal.com The DevOps Issue Quentin Hartman, Director of Infrastructure and DevOps at Finalze. Next, turn to Linux Journal’s very own Editor at Large (and senior performance software engineer at Cray), Petros Koutoupis, for a look at how to install and utilize Ansible to deploy and configure large numbers of Linux servers all at once. It’s a nifty tool to have in your toolbelt, especially when looking to do things “The DevOps Way”. Okay, you’ve got the idea of DevOps, and you know some of the tools you can utilize with it as you build out a big, expansive online service. But what does a truly excellent system really look like? What components does it consist of? How does one go about selecting said components? Luckily, we’ve got Kyle Rankin’s aptly titled “My Favorite Infrastructure” to answer those questions. Linux Journal’s illustrious Tech Editor (and Chief Security Officer at Purism) gives a tour of, what he considers to be, the best infrastructure he ever built.