The DevOps Handbook Quotes

“As Damon Edwards observed, “Without these self-service Operations platforms, the cloud is just Expensive Hosting 2.0.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“Contrast this to the more traditional model where Development and Test teams are assigned to a “project” and then reassigned to another project as soon as the project is completed and funding runs out. This leads to all sorts of undesired outcomes, including developers being unable to see the long-term consequences of decisions they make (a form of feedback) and a funding model that only values and pays for the earliest stages of the software life cycle—which, tragically, is also the least expensive part for successful products or services. ††”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“What these organizations have in common is a high-trust culture that enables all departments to work together effectively, where all work is transparently prioritized and there is sufficient slack in the system to allow high-priority work to be completed quickly. This is, in part, enabled by automated self-service platforms that build quality into the products everyone is building.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“INCREASE THE VISIBILITY OF WORK In order to be able to know if we are making progress toward our goal, it’s essential that everyone in the organization knows the current state of work. There are many ways to make the current state visible, but what’s most important is that the information we display is up to date, and that we constantly revise what we measure to make sure it’s helping us understand progress toward our current target conditions.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“Having developers share responsibility for the quality of the systems they build not only improves outcomes but also accelerates learning.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“Over-alerting causes Operations engineers to be woken up in the middle of the night for protracted periods of time, even when there are few actions that they can appropriately take. The”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“In Operations, many of our data sets have what we call ‘chi squared’ distribution. Using”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“Alert fatigue is the single biggest problem we have right now…We need to be more intelligent about our alerts or we’ll all go insane.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“The work done at Netflix highlights one very specific way we can use telemetry to mitigate problems before they impact our customer.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“all team members as well as passers-by can see the latest information at a glance: count of automated tests, velocity, incident reports, continuous integration status, and so on. This”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“It was important to us that for a developer, adding production telemetry didn’t feel as difficult as doing a database schema change.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“should be as easy as writing one line of code to create a new metric that shows up in a common dashboard where everyone in the value stream can see it.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“common practice of using rumor and hearsay, which can lead to the unfortunate metric of mean time until declared innocent—how quickly can we convince everyone else that we didn’t cause the outage.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“we should ensure that all potentially significant application events generate logging entries, including”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“When deciding whether a message should be ERROR or WARN, imagine being woken up at 4 a.m. Low printer toner is not an ERROR.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“creating application and infrastructure telemetry to be one of the highest return investments we’ve made. In”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“we must ensure that the applications we build and operate are creating sufficient telemetry.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“Monitoring is so important that our monitoring systems need to be more available and scalable than the systems being monitored.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“We should also collect telemetry on how long it takes us to execute our builds and tests. By”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“In addition to collecting telemetry from our production services and environments, we must also collect telemetry from our deployment pipeline when important events occur, such as when our automated tests pass or fail and when we perform deployments to any environment. We”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“Once we have centralized our logs, we can transform them into metrics by”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“However, for decades we have ended up with silos of information, where Development only creates logging events that are interesting to developers, and Operations only monitors whether the environments are up or down. As”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“telemetry is what enables us to assemble our best understanding of reality and detect when our understanding of reality is incorrect.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“we need to design our systems so that they are continually creating telemetry, widely”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“This is the reality of operating complex systems; no single person can see the whole system and understand how all the pieces fit together.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“the architecture that our services operate within dictates how we test and deploy our code. This”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“To even get feedback from our integration process would require twenty-four to thirty-six hours.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“Up-front analysis helps us identify the smallest possible piece of work that will usefully achieve a business outcome using”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“Much of my career has involved rewrites of critical systems. You would think such a thing is easy—just make the new one do what the old one did. Yet they are always much more complex than they seem, and overflowing with risk. The big cut-over date looms, and the pressure is on. While new features (there are always new features) are liked, old stuff has to remain. Even old bugs often need to be added to the rewritten system.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations

“Chuck Rossi, Director of Release Engineering at Facebook, described, “All the code supporting every feature we’re planning to launch over the next six months has already been deployed onto our production servers. All we need to do is turn it on.”
― Gene Kim, The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations