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DevOps Culture and Practice with OpenShift

DevOps Culture and Practice with OpenShift

By : Tim Beattie, Mike Hepburn, Noel O'Connor, Donal Spring, Ilaria Doria
4.4 (7)
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DevOps Culture and Practice with OpenShift

DevOps Culture and Practice with OpenShift

4.4 (7)
By: Tim Beattie, Mike Hepburn, Noel O'Connor, Donal Spring, Ilaria Doria

Overview of this book

DevOps Culture and Practice with OpenShift features many different real-world practices - some people-related, some process-related, some technology-related - to facilitate successful DevOps, and in turn OpenShift, adoption within your organization. It introduces many DevOps concepts and tools to connect culture and practice through a continuous loop of discovery, pivots, and delivery underpinned by a foundation of collaboration and software engineering. Containers and container-centric application lifecycle management are now an industry standard, and OpenShift has a leading position in a flourishing market of enterprise Kubernetes-based product offerings. DevOps Culture and Practice with OpenShift provides a roadmap for building empowered product teams within your organization. This guide brings together lean, agile, design thinking, DevOps, culture, facilitation, and hands-on technical enablement all in one book. Through a combination of real-world stories, a practical case study, facilitation guides, and technical implementation details, DevOps Culture and Practice with OpenShift provides tools and techniques to build a DevOps culture within your organization on Red Hat's OpenShift Container Platform.
Table of Contents (30 chapters)
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Free Chapter
2
Section 1: Practices Make Perfect
6
Section 2: Establishing the Foundation
11
Section 3: Discover It
15
Section 4: Prioritize It
17
Section 5: Deliver It
20
Section 6: Build It, Run It, Own It
24
Section 7: Improve It, Sustain It
27
Index
Appendix B – Additional Learning Resources

Alerting

So we have all the metrics to provide us with some insight into how the system is performing. We've got spectacular graphs and gauges in Grafana but we're hardly going to sit watching them all day to see if something happens. It's time to add alerting to the solution.

What Is an Alert?

An alert is an event that is generated when some measurement threshold (observed or calculated) is about to be or has been breached. The following are some examples of alerts:

  • The average system response time in the last five minutes goes above 100 milliseconds.
  • The number of currently active users on the site falls below a certain threshold.
  • Application memory usage is approaching its maximum limit.

Alerts usually result in notifications being sent to human operators, whether that is through an email or instant message, say. Notifications can also be sent to trigger automation scripts/processes to deal with the alert. Service owners can analyze their...

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