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The KCNA Book

You're reading from The KCNA Book

Product type Book

Published in Jun 2023

Publisher Packt

ISBN-13 9781835080399

Pages 197 pages

Edition 1st Edition

Languages

Concepts

Containerization

Author (1):

Nigel Poulton

Table of Contents (12) Chapters

1. Getting started

2. 1: Setting the scene

3. 2: Cloud native architecture

4. 3: Container orchestration

5. 4: Kubernetes Fundamentals

6. 5: Cloud native application delivery

7. 6: Cloud native observability

8. The exam

9. 8: Sample test

10. What next

Appendix A: Chapter quiz answers

1. Appendix B: Sample Test answers

Exam essentials

Telemetry: Telemetry is jargon for the monitoring-related outputs generated by a system. They include logs, metrics, and traces. High-quality telemetry is vital for troubleshooting, tweaking, and understanding the behaviour of cloud native apps.
OpenTelemetry: The OpenTelemetry project is an incubating CNCF project that defines specifications and instrumentation aimed at making high-quality telemetry part of all cloud native apps.
Logs: Logs are a form of telemetry relating to application events and are one of the best places to look when things break. For example, application restarts, failed logins, dropped connections, and more will all be logged as events. Log data is often structured and formatted as JSON to make it easy to read and search. It’s also commonly categorised according to severity, with common severity levels including info, warning, error, and critical.
Metrics: Metrics are usually performance related data captured over long...

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Authors (1)

Nigel Poulton

Nigel Poulton is a cloud-native subject matter expert who spends his life creating books and training videos on the latest cloud technologies. He is the author of best-selling books on Docker and Kubernetes and the most popular online training videos on the same topic. He is a Docker Captain. Prior to this, Nigel has held various infrastructure roles for large enterprises. When he is not playing with technology, he is dreaming about it. When he is not dreaming about it, he is reading and watching sci-fi. He wishes he lived in the future so he could explore spacetime, the universe, and tons of other mind-blowing stuff. He likes cars, football (soccer), and food. He has a fabulous wife and three children.

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