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Becoming KCNA Certified

Becoming KCNA Certified

By : Dmitry Galkin
5 (6)
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Becoming KCNA Certified

Becoming KCNA Certified

5 (6)
By: Dmitry Galkin

Overview of this book

The job market related to the cloud and cloud-native technologies is both growing and becoming increasingly competitive, making certifications like KCNA a great way to stand out from the crowd and learn about the latest advancements in cloud technologies. Becoming KCNA Certified doesn't just give you the practical skills needed to deploy and connect applications in Kubernetes, but it also prepares you to pass the Kubernetes and Cloud Native Associate (KCNA) exam on your first attempt. The book starts by introducing you to cloud-native computing, containers, and Kubernetes through practical examples, allowing you to test the theory out for yourself. You'll learn how to configure and provide storage for your Kubernetes-managed applications and explore the principles of modern cloud-native architecture and application delivery, giving you a well-rounded view of the subject. Once you've been through the theoretical and practical aspects of the book, you'll get the chance to test what you’ve learnt with two mock exams, with explanations of the answers, so you'll be well-prepared to appear for the KCNA exam. By the end of this Kubernetes book, you'll have everything you need to pass the KCNA exam and forge a career in Kubernetes and cloud-native computing.
Table of Contents (22 chapters)
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1
Part 1: The Cloud Era
4
Part 2: Performing Container Orchestration
7
Part 3: Learning Kubernetes Fundamentals
12
Part 4: Exploring Cloud Native
16
Part 5: KCNA Exam and Next Steps

Prometheus for monitoring and alerting

After its initial appearance in 2012, Prometheus quickly gained popularity with its rich functionality and Time Series Database (TSDB) that allowed to persisting metrics for querying, analysis, and predictions. Interestingly, Prometheus was inspired by Google’s Borgmon – tool used for monitoring Google’s Borg – the predecessor of Kubernetes.

In 2016, Prometheus was accepted as the second CNCF project (after K8s) that has reached Graduated status by the year 2018. Today, Prometheus is considered an industry standard for monitoring and alerting and widely used with Kubernetes and other CNCF projects.

But enough history, let’s get to the point. First, what is a TSDB?

TSDB

Is a database optimized for storage of data with timestamps. The data could be measurements or events that are tracked and aggregated over time. In case of Prometheus, the data are metrics collected regularly from applications and parts...

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